/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/array-crafted/zero_sum_const4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 18:47:46,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 18:47:46,446 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 18:47:46,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 18:47:46,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 18:47:46,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 18:47:46,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 18:47:46,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 18:47:46,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 18:47:46,475 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 18:47:46,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 18:47:46,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 18:47:46,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 18:47:46,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 18:47:46,477 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 18:47:46,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 18:47:46,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 18:47:46,478 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 18:47:46,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 18:47:46,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 18:47:46,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 18:47:46,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 18:47:46,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 18:47:46,479 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 18:47:46,479 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 18:47:46,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 18:47:46,479 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 18:47:46,480 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 18:47:46,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 18:47:46,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 18:47:46,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 18:47:46,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 18:47:46,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 18:47:46,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 18:47:46,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:47:46,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 18:47:46,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 18:47:46,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 18:47:46,482 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 18:47:46,482 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 18:47:46,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 18:47:46,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 18:47:46,482 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 18:47:46,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 18:47:46,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 18:47:46,483 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 18:47:46,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 18:47:46,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 18:47:46,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 18:47:46,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 18:47:46,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 18:47:46,706 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 18:47:46,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const4.c [2023-12-21 18:47:47,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 18:47:47,868 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 18:47:47,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const4.c [2023-12-21 18:47:47,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d647986c/bec5c920642842f4b487892190694f76/FLAG2c6a03669 [2023-12-21 18:47:47,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d647986c/bec5c920642842f4b487892190694f76 [2023-12-21 18:47:47,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 18:47:47,893 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 18:47:47,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 18:47:47,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 18:47:47,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 18:47:47,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:47:47" (1/1) ... [2023-12-21 18:47:47,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d941fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:47, skipping insertion in model container [2023-12-21 18:47:47,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:47:47" (1/1) ... [2023-12-21 18:47:47,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 18:47:48,024 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const4.c[406,419] [2023-12-21 18:47:48,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:47:48,049 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 18:47:48,056 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const4.c[406,419] [2023-12-21 18:47:48,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:47:48,073 INFO L206 MainTranslator]: Completed translation [2023-12-21 18:47:48,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48 WrapperNode [2023-12-21 18:47:48,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 18:47:48,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 18:47:48,074 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 18:47:48,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 18:47:48,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,108 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 126 [2023-12-21 18:47:48,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 18:47:48,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 18:47:48,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 18:47:48,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 18:47:48,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,137 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-21 18:47:48,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 18:47:48,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 18:47:48,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 18:47:48,156 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 18:47:48,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (1/1) ... [2023-12-21 18:47:48,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:47:48,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 18:47:48,191 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) [2023-12-21 18:47:48,208 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 [2023-12-21 18:47:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 18:47:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 18:47:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 18:47:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-21 18:47:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 18:47:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 18:47:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 18:47:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 18:47:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 18:47:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 18:47:48,277 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 18:47:48,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 18:47:48,491 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 18:47:48,521 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 18:47:48,521 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-21 18:47:48,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:47:48 BoogieIcfgContainer [2023-12-21 18:47:48,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 18:47:48,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 18:47:48,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 18:47:48,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 18:47:48,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:47:47" (1/3) ... [2023-12-21 18:47:48,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa1b443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:47:48, skipping insertion in model container [2023-12-21 18:47:48,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:47:48" (2/3) ... [2023-12-21 18:47:48,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa1b443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:47:48, skipping insertion in model container [2023-12-21 18:47:48,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:47:48" (3/3) ... [2023-12-21 18:47:48,527 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const4.c [2023-12-21 18:47:48,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 18:47:48,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 18:47:48,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 18:47:48,578 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;@5e0980ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 18:47:48,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 18:47:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.875) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 18:47:48,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:48,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:48,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:48,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1145627675, now seen corresponding path program 1 times [2023-12-21 18:47:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:48,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121893544] [2023-12-21 18:47:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:47:48,601 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 [2023-12-21 18:47:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:48,603 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) [2023-12-21 18:47:48,609 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 [2023-12-21 18:47:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:47:48,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 18:47:48,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:47:48,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:47:48,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:48,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121893544] [2023-12-21 18:47:48,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121893544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:47:48,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:47:48,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:47:48,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579973322] [2023-12-21 18:47:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:47:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 18:47:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 18:47:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:47:48,763 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.875) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:48,820 INFO L93 Difference]: Finished difference Result 49 states and 84 transitions. [2023-12-21 18:47:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 18:47:48,822 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 18:47:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:48,827 INFO L225 Difference]: With dead ends: 49 [2023-12-21 18:47:48,827 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 18:47:48,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:47:48,832 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:48,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:47:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 18:47:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 18:47:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-12-21 18:47:48,853 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 22 [2023-12-21 18:47:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:48,854 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-12-21 18:47:48,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-12-21 18:47:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 18:47:48,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:48,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:48,859 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 [2023-12-21 18:47:49,057 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 [2023-12-21 18:47:49,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:49,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1559691955, now seen corresponding path program 1 times [2023-12-21 18:47:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198159943] [2023-12-21 18:47:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:47:49,061 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 [2023-12-21 18:47:49,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:49,062 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) [2023-12-21 18:47:49,064 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 [2023-12-21 18:47:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:47:49,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 18:47:49,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:47:49,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:47:49,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:49,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198159943] [2023-12-21 18:47:49,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198159943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:47:49,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:47:49,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 18:47:49,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753703989] [2023-12-21 18:47:49,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:47:49,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 18:47:49,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:49,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 18:47:49,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:47:49,197 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:49,274 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2023-12-21 18:47:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:47:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 18:47:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:49,277 INFO L225 Difference]: With dead ends: 42 [2023-12-21 18:47:49,277 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 18:47:49,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 18:47:49,279 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:49,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:47:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 18:47:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-21 18:47:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2023-12-21 18:47:49,291 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 22 [2023-12-21 18:47:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:49,292 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2023-12-21 18:47:49,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2023-12-21 18:47:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 18:47:49,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:49,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:49,298 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 [2023-12-21 18:47:49,495 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 [2023-12-21 18:47:49,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:49,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1141535050, now seen corresponding path program 1 times [2023-12-21 18:47:49,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:49,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773307122] [2023-12-21 18:47:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:47:49,498 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 [2023-12-21 18:47:49,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:49,517 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) [2023-12-21 18:47:49,530 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 [2023-12-21 18:47:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:47:49,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 18:47:49,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:47:49,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:47:49,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:49,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773307122] [2023-12-21 18:47:49,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773307122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:47:49,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:47:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:47:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880283103] [2023-12-21 18:47:49,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:47:49,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 18:47:49,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:49,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 18:47:49,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:47:49,621 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:49,718 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-12-21 18:47:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:47:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 18:47:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:49,719 INFO L225 Difference]: With dead ends: 74 [2023-12-21 18:47:49,719 INFO L226 Difference]: Without dead ends: 39 [2023-12-21 18:47:49,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 18:47:49,720 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:49,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 23 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:47:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-21 18:47:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-21 18:47:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2023-12-21 18:47:49,726 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 23 [2023-12-21 18:47:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:49,727 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-12-21 18:47:49,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2023-12-21 18:47:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 18:47:49,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:49,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:49,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 18:47:49,930 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 [2023-12-21 18:47:49,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:49,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1340591959, now seen corresponding path program 1 times [2023-12-21 18:47:49,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:49,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507239875] [2023-12-21 18:47:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:47:49,932 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 [2023-12-21 18:47:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:49,933 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) [2023-12-21 18:47:49,939 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 [2023-12-21 18:47:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:47:49,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:47:49,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:47:50,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:47:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:47:50,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:50,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507239875] [2023-12-21 18:47:50,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507239875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:47:50,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:47:50,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 18:47:50,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344970692] [2023-12-21 18:47:50,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:47:50,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 18:47:50,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 18:47:50,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 18:47:50,066 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:50,188 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2023-12-21 18:47:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 18:47:50,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-21 18:47:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:50,203 INFO L225 Difference]: With dead ends: 75 [2023-12-21 18:47:50,203 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 18:47:50,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-21 18:47:50,204 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:50,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 26 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:47:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 18:47:50,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-21 18:47:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2023-12-21 18:47:50,210 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 24 [2023-12-21 18:47:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:50,210 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2023-12-21 18:47:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2023-12-21 18:47:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 18:47:50,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:50,211 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:50,218 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 [2023-12-21 18:47:50,416 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 [2023-12-21 18:47:50,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:50,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1078578454, now seen corresponding path program 2 times [2023-12-21 18:47:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:50,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839838215] [2023-12-21 18:47:50,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:47:50,417 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 [2023-12-21 18:47:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:50,420 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) [2023-12-21 18:47:50,427 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 [2023-12-21 18:47:50,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 18:47:50,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:47:50,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 18:47:50,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:47:50,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:47:50,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:50,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839838215] [2023-12-21 18:47:50,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839838215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:47:50,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:47:50,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 18:47:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923006723] [2023-12-21 18:47:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:47:50,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 18:47:50,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 18:47:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 18:47:50,490 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:50,569 INFO L93 Difference]: Finished difference Result 64 states and 92 transitions. [2023-12-21 18:47:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 18:47:50,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 18:47:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:50,570 INFO L225 Difference]: With dead ends: 64 [2023-12-21 18:47:50,570 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 18:47:50,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 18:47:50,571 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:50,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 14 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:47:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 18:47:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-21 18:47:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-21 18:47:50,575 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 25 [2023-12-21 18:47:50,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:50,576 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-21 18:47:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-21 18:47:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 18:47:50,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:50,576 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:50,580 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 [2023-12-21 18:47:50,778 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 [2023-12-21 18:47:50,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:50,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1256814962, now seen corresponding path program 1 times [2023-12-21 18:47:50,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:50,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719662048] [2023-12-21 18:47:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:47:50,780 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 [2023-12-21 18:47:50,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:50,781 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) [2023-12-21 18:47:50,782 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 [2023-12-21 18:47:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:47:50,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 18:47:50,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 18:47:50,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:47:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 18:47:51,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:51,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719662048] [2023-12-21 18:47:51,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719662048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:47:51,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:47:51,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-21 18:47:51,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759008328] [2023-12-21 18:47:51,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:47:51,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 18:47:51,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 18:47:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-21 18:47:51,115 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:51,652 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2023-12-21 18:47:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:47:51,653 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 18:47:51,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:51,653 INFO L225 Difference]: With dead ends: 104 [2023-12-21 18:47:51,654 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 18:47:51,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:47:51,655 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 201 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:51,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 43 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 18:47:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 18:47:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2023-12-21 18:47:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2023-12-21 18:47:51,664 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 32 [2023-12-21 18:47:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:51,664 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2023-12-21 18:47:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2023-12-21 18:47:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 18:47:51,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:51,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:51,700 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 [2023-12-21 18:47:51,867 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 [2023-12-21 18:47:51,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:51,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash -211220301, now seen corresponding path program 2 times [2023-12-21 18:47:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684208491] [2023-12-21 18:47:51,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:47:51,868 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 [2023-12-21 18:47:51,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:51,869 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) [2023-12-21 18:47:51,874 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 [2023-12-21 18:47:52,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:47:52,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:47:52,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 18:47:52,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:52,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 18:47:52,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:47:52,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2023-12-21 18:47:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:47:52,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:47:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 18:47:53,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684208491] [2023-12-21 18:47:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684208491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:47:53,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:47:53,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-12-21 18:47:53,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24720617] [2023-12-21 18:47:53,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:47:53,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 18:47:53,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:53,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 18:47:53,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-21 18:47:53,077 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:57,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 18:47:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:57,709 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2023-12-21 18:47:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:47:57,709 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 18:47:57,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:57,710 INFO L225 Difference]: With dead ends: 107 [2023-12-21 18:47:57,710 INFO L226 Difference]: Without dead ends: 71 [2023-12-21 18:47:57,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-21 18:47:57,711 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:57,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 103 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-12-21 18:47:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-21 18:47:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2023-12-21 18:47:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2023-12-21 18:47:57,720 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 40 [2023-12-21 18:47:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:57,720 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2023-12-21 18:47:57,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2023-12-21 18:47:57,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 18:47:57,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:57,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:57,728 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 (8)] Ended with exit code 0 [2023-12-21 18:47:57,925 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 [2023-12-21 18:47:57,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:57,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:57,926 INFO L85 PathProgramCache]: Analyzing trace with hash -7016087, now seen corresponding path program 3 times [2023-12-21 18:47:57,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:57,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064947429] [2023-12-21 18:47:57,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:47:57,927 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 [2023-12-21 18:47:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:57,928 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) [2023-12-21 18:47:57,934 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 [2023-12-21 18:47:58,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 18:47:58,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:47:58,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 18:47:58,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:47:58,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:47:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:47:58,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:58,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064947429] [2023-12-21 18:47:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064947429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:47:58,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:47:58,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-21 18:47:58,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913340115] [2023-12-21 18:47:58,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:47:58,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 18:47:58,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 18:47:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-12-21 18:47:58,403 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:58,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:58,694 INFO L93 Difference]: Finished difference Result 105 states and 133 transitions. [2023-12-21 18:47:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 18:47:58,694 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-21 18:47:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:58,695 INFO L225 Difference]: With dead ends: 105 [2023-12-21 18:47:58,695 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 18:47:58,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:47:58,696 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 70 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:58,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 26 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:47:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 18:47:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-21 18:47:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-12-21 18:47:58,701 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 42 [2023-12-21 18:47:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:58,701 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-12-21 18:47:58,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:47:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-12-21 18:47:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 18:47:58,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:58,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:58,710 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 18:47:58,903 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 [2023-12-21 18:47:58,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:58,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2027067035, now seen corresponding path program 4 times [2023-12-21 18:47:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:58,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43335318] [2023-12-21 18:47:58,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:47:58,904 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 [2023-12-21 18:47:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:58,905 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) [2023-12-21 18:47:58,907 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 [2023-12-21 18:48:04,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:48:04,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:48:04,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 18:48:04,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:48:04,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 18:48:05,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:48:05,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 13 [2023-12-21 18:48:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:48:05,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:48:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 18:48:06,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:48:06,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43335318] [2023-12-21 18:48:06,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43335318] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:48:06,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:48:06,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2023-12-21 18:48:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408947155] [2023-12-21 18:48:06,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:48:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 18:48:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:48:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 18:48:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:48:06,408 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:11,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 18:48:11,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:48:11,821 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2023-12-21 18:48:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 18:48:11,822 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 18:48:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:48:11,823 INFO L225 Difference]: With dead ends: 90 [2023-12-21 18:48:11,823 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 18:48:11,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-21 18:48:11,823 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-21 18:48:11,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 117 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 789 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-21 18:48:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 18:48:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2023-12-21 18:48:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 82 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2023-12-21 18:48:11,833 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 49 [2023-12-21 18:48:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:48:11,833 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2023-12-21 18:48:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2023-12-21 18:48:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 18:48:11,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:48:11,834 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:48:11,847 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 [2023-12-21 18:48:12,043 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 [2023-12-21 18:48:12,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:48:12,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:48:12,044 INFO L85 PathProgramCache]: Analyzing trace with hash 491090094, now seen corresponding path program 5 times [2023-12-21 18:48:12,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:48:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611638156] [2023-12-21 18:48:12,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:48:12,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:48:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:48:12,045 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) [2023-12-21 18:48:12,048 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 [2023-12-21 18:48:12,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 18:48:12,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:48:12,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 18:48:12,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:48:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 18:48:12,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:48:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 18:48:12,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:48:12,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611638156] [2023-12-21 18:48:12,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611638156] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:48:12,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:48:12,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2023-12-21 18:48:12,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570999056] [2023-12-21 18:48:12,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:48:12,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 18:48:12,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:48:12,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 18:48:12,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2023-12-21 18:48:12,902 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:48:13,838 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2023-12-21 18:48:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 18:48:13,839 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 18:48:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:48:13,840 INFO L225 Difference]: With dead ends: 166 [2023-12-21 18:48:13,840 INFO L226 Difference]: Without dead ends: 99 [2023-12-21 18:48:13,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 18:48:13,841 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 189 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 18:48:13,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 34 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 18:48:13,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-21 18:48:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2023-12-21 18:48:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 89 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2023-12-21 18:48:13,852 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 50 [2023-12-21 18:48:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:48:13,852 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2023-12-21 18:48:13,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2023-12-21 18:48:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 18:48:13,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:48:13,853 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:48:13,859 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 [2023-12-21 18:48:14,059 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 [2023-12-21 18:48:14,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:48:14,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:48:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1553349257, now seen corresponding path program 6 times [2023-12-21 18:48:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:48:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813490835] [2023-12-21 18:48:14,060 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:48:14,060 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 [2023-12-21 18:48:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:48:14,061 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) [2023-12-21 18:48:14,065 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 [2023-12-21 18:48:14,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-21 18:48:14,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:48:14,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 18:48:14,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:48:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 18:48:14,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:48:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 18:48:14,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:48:14,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813490835] [2023-12-21 18:48:14,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813490835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:48:14,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:48:14,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2023-12-21 18:48:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144075025] [2023-12-21 18:48:14,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:48:14,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 18:48:14,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:48:14,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 18:48:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-12-21 18:48:14,812 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:48:15,595 INFO L93 Difference]: Finished difference Result 146 states and 169 transitions. [2023-12-21 18:48:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 18:48:15,596 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 18:48:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:48:15,596 INFO L225 Difference]: With dead ends: 146 [2023-12-21 18:48:15,596 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 18:48:15,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 18:48:15,597 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 226 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:48:15,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 40 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 18:48:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 18:48:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-21 18:48:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2023-12-21 18:48:15,604 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 50 [2023-12-21 18:48:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:48:15,604 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2023-12-21 18:48:15,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:48:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2023-12-21 18:48:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 18:48:15,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:48:15,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:48:15,612 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 [2023-12-21 18:48:15,810 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 [2023-12-21 18:48:15,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:48:15,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:48:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash 607227571, now seen corresponding path program 7 times [2023-12-21 18:48:15,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:48:15,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068635938] [2023-12-21 18:48:15,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 18:48:15,811 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 [2023-12-21 18:48:15,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:48:15,812 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) [2023-12-21 18:48:15,826 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 Received shutdown request... [2023-12-21 19:02:35,218 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:02:35,242 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 [2023-12-21 19:02:36,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 19:02:36,419 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forcibly destroying the process [2023-12-21 19:02:36,478 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 137 [2023-12-21 19:02:36,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 19:02:36,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 19:02:36,480 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 59 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1068635938] and IpTcStrategyModuleCvc4 [481282865]. [2023-12-21 19:02:36,483 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1] [2023-12-21 19:02:36,484 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 19:02:36,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:02:36 BoogieIcfgContainer [2023-12-21 19:02:36,486 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 19:02:36,486 INFO L158 Benchmark]: Toolchain (without parser) took 888593.21ms. Allocated memory is still 325.1MB. Free memory was 282.9MB in the beginning and 194.0MB in the end (delta: 88.9MB). Peak memory consumption was 89.7MB. Max. memory is 8.0GB. [2023-12-21 19:02:36,486 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 157.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 19:02:36,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.25ms. Allocated memory is still 325.1MB. Free memory was 282.9MB in the beginning and 270.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 19:02:36,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.08ms. Allocated memory is still 325.1MB. Free memory was 270.8MB in the beginning and 268.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:02:36,487 INFO L158 Benchmark]: Boogie Preprocessor took 45.61ms. Allocated memory is still 325.1MB. Free memory was 268.7MB in the beginning and 266.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:02:36,487 INFO L158 Benchmark]: RCFGBuilder took 366.35ms. Allocated memory is still 325.1MB. Free memory was 266.6MB in the beginning and 247.2MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-21 19:02:36,487 INFO L158 Benchmark]: TraceAbstraction took 887962.47ms. Allocated memory is still 325.1MB. Free memory was 246.2MB in the beginning and 194.0MB in the end (delta: 52.2MB). Peak memory consumption was 53.0MB. Max. memory is 8.0GB. [2023-12-21 19:02:36,488 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 157.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 178.25ms. Allocated memory is still 325.1MB. Free memory was 282.9MB in the beginning and 270.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.08ms. Allocated memory is still 325.1MB. Free memory was 270.8MB in the beginning and 268.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.61ms. Allocated memory is still 325.1MB. Free memory was 268.7MB in the beginning and 266.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 366.35ms. Allocated memory is still 325.1MB. Free memory was 266.6MB in the beginning and 247.2MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 887962.47ms. Allocated memory is still 325.1MB. Free memory was 246.2MB in the beginning and 194.0MB in the end (delta: 52.2MB). Peak memory consumption was 53.0MB. 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: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was analyzing trace of length 59 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1068635938] and IpTcStrategyModuleCvc4 [481282865]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 887.9s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 826 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 826 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 11.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 692 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3101 IncrementalHoareTripleChecker+Invalid, 3795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 692 mSolverCounterUnsat, 187 mSDtfsCounter, 3101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 717 GetRequests, 536 SyntacticMatches, 16 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=10, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 379 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 648 ConstructedInterpolants, 4 QuantifiedInterpolants, 5174 SizeOfPredicates, 31 NumberOfNonLiveVariables, 942 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 262/491 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