/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_sum4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 18:39:53,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 18:39:53,419 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 18:39:53,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 18:39:53,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 18:39:53,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 18:39:53,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 18:39:53,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 18:39:53,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 18:39:53,449 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 18:39:53,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 18:39:53,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 18:39:53,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 18:39:53,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 18:39:53,451 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 18:39:53,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 18:39:53,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 18:39:53,452 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 18:39:53,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 18:39:53,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 18:39:53,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 18:39:53,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 18:39:53,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 18:39:53,454 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 18:39:53,454 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 18:39:53,454 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 18:39:53,454 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 18:39:53,454 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 18:39:53,454 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 18:39:53,454 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 18:39:53,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 18:39:53,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 18:39:53,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 18:39:53,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 18:39:53,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:39:53,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 18:39:53,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 18:39:53,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 18:39:53,456 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 18:39:53,456 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 18:39:53,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 18:39:53,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 18:39:53,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 18:39:53,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 18:39:53,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 18:39:53,457 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 18:39:53,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 18:39:53,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 18:39:53,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 18:39:53,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 18:39:53,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 18:39:53,684 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 18:39:53,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum4.c [2023-12-21 18:39:54,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 18:39:54,927 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 18:39:54,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum4.c [2023-12-21 18:39:54,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c456a9702/8ae2bde537ed4eedad5236d616eb1ff9/FLAGf045ac491 [2023-12-21 18:39:54,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c456a9702/8ae2bde537ed4eedad5236d616eb1ff9 [2023-12-21 18:39:54,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 18:39:54,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 18:39:54,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 18:39:54,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 18:39:54,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 18:39:54,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:39:54" (1/1) ... [2023-12-21 18:39:54,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d054362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:54, skipping insertion in model container [2023-12-21 18:39:54,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:39:54" (1/1) ... [2023-12-21 18:39:54,973 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 18:39:55,089 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_sum4.c[400,413] [2023-12-21 18:39:55,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:39:55,130 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 18:39:55,138 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_sum4.c[400,413] [2023-12-21 18:39:55,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:39:55,158 INFO L206 MainTranslator]: Completed translation [2023-12-21 18:39:55,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55 WrapperNode [2023-12-21 18:39:55,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 18:39:55,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 18:39:55,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 18:39:55,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 18:39:55,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,186 INFO L138 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 128 [2023-12-21 18:39:55,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 18:39:55,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 18:39:55,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 18:39:55,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 18:39:55,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,212 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 18:39:55,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 18:39:55,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 18:39:55,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 18:39:55,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 18:39:55,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (1/1) ... [2023-12-21 18:39:55,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:39:55,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 18:39:55,265 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 18:39:55,296 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 18:39:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 18:39:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 18:39:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 18:39:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 18:39:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-21 18:39:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-21 18:39:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 18:39:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 18:39:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-21 18:39:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-21 18:39:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 18:39:55,370 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 18:39:55,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 18:39:55,603 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 18:39:55,633 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 18:39:55,634 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-21 18:39:55,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:39:55 BoogieIcfgContainer [2023-12-21 18:39:55,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 18:39:55,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 18:39:55,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 18:39:55,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 18:39:55,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:39:54" (1/3) ... [2023-12-21 18:39:55,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a20429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:39:55, skipping insertion in model container [2023-12-21 18:39:55,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:39:55" (2/3) ... [2023-12-21 18:39:55,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a20429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:39:55, skipping insertion in model container [2023-12-21 18:39:55,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:39:55" (3/3) ... [2023-12-21 18:39:55,639 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum4.c [2023-12-21 18:39:55,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 18:39:55,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 18:39:55,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 18:39:55,682 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;@7adfa446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 18:39:55,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 18:39:55,685 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 18:39:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 18:39:55,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:55,689 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 18:39:55,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:55,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:55,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1145627675, now seen corresponding path program 1 times [2023-12-21 18:39:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:55,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632560366] [2023-12-21 18:39:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:39:55,703 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 18:39:55,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:55,706 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 18:39:55,724 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 18:39:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:39:55,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 18:39:55,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:55,783 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 18:39:55,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:39:55,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:55,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632560366] [2023-12-21 18:39:55,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632560366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:39:55,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:39:55,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:39:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995501303] [2023-12-21 18:39:55,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:39:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 18:39:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:55,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 18:39:55,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:39:55,807 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 18:39:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:55,861 INFO L93 Difference]: Finished difference Result 49 states and 84 transitions. [2023-12-21 18:39:55,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 18:39:55,864 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 18:39:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:55,869 INFO L225 Difference]: With dead ends: 49 [2023-12-21 18:39:55,869 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 18:39:55,871 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 18:39:55,876 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 18:39:55,876 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 18:39:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 18:39:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 18:39:55,895 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 18:39:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-12-21 18:39:55,896 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 22 [2023-12-21 18:39:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:55,897 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-12-21 18:39:55,897 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 18:39:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-12-21 18:39:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 18:39:55,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:55,898 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 18:39:55,902 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 (2)] Ended with exit code 0 [2023-12-21 18:39:56,106 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 18:39:56,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:56,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1559691955, now seen corresponding path program 1 times [2023-12-21 18:39:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:56,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172871181] [2023-12-21 18:39:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:39:56,108 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 18:39:56,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:56,109 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 18:39:56,113 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 18:39:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:39:56,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 18:39:56,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:56,254 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 18:39:56,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:39:56,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:56,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172871181] [2023-12-21 18:39:56,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172871181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:39:56,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:39:56,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 18:39:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424783403] [2023-12-21 18:39:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:39:56,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 18:39:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:56,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 18:39:56,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:39:56,256 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 18:39:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:56,315 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2023-12-21 18:39:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:39:56,315 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 18:39:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:56,316 INFO L225 Difference]: With dead ends: 42 [2023-12-21 18:39:56,316 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 18:39:56,317 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 18:39:56,317 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:39:56,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:39:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 18:39:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-21 18:39:56,326 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 18:39:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2023-12-21 18:39:56,328 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 22 [2023-12-21 18:39:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:56,329 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2023-12-21 18:39:56,329 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 18:39:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2023-12-21 18:39:56,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 18:39:56,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:56,329 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 18:39:56,334 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 18:39:56,531 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 18:39:56,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:56,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:56,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1460322618, now seen corresponding path program 1 times [2023-12-21 18:39:56,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:56,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488548359] [2023-12-21 18:39:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:39:56,534 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 18:39:56,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:56,535 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 18:39:56,537 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 18:39:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:39:56,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:39:56,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:56,604 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 18:39:56,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:39:56,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:56,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488548359] [2023-12-21 18:39:56,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488548359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:39:56,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:39:56,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:39:56,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235298894] [2023-12-21 18:39:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:39:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:39:56,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:39:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:39:56,606 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) 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 18:39:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:56,673 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-12-21 18:39:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:39:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) 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 18:39:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:56,674 INFO L225 Difference]: With dead ends: 74 [2023-12-21 18:39:56,675 INFO L226 Difference]: Without dead ends: 39 [2023-12-21 18:39:56,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:39:56,677 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:39:56,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:39:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-21 18:39:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-21 18:39:56,682 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 18:39:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2023-12-21 18:39:56,682 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 23 [2023-12-21 18:39:56,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:56,683 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-12-21 18:39:56,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) 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 18:39:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2023-12-21 18:39:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 18:39:56,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:56,688 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 18:39:56,698 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 18:39:56,891 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 18:39:56,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:56,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2097088963, now seen corresponding path program 1 times [2023-12-21 18:39:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:56,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407543712] [2023-12-21 18:39:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:39:56,893 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 18:39:56,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:56,894 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 18:39:56,898 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 18:39:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:39:56,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 18:39:56,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:56,956 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 18:39:56,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:39:56,982 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 18:39:56,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407543712] [2023-12-21 18:39:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407543712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:39:56,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:39:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 18:39:56,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387268605] [2023-12-21 18:39:56,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:39:56,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:39:56,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:39:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:39:56,984 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 18:39:57,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:57,084 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2023-12-21 18:39:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:39:57,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 18:39:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:57,086 INFO L225 Difference]: With dead ends: 75 [2023-12-21 18:39:57,087 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 18:39:57,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:39:57,087 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:39:57,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:39:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 18:39:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-21 18:39:57,091 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 18:39:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2023-12-21 18:39:57,092 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 24 [2023-12-21 18:39:57,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:57,092 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2023-12-21 18:39:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 18:39:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2023-12-21 18:39:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 18:39:57,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:57,093 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 18:39:57,099 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 18:39:57,295 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 18:39:57,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:57,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -362009178, now seen corresponding path program 2 times [2023-12-21 18:39:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:57,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968244285] [2023-12-21 18:39:57,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:39:57,296 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 18:39:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:57,298 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 18:39:57,310 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 18:39:57,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 18:39:57,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:39:57,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:39:57,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:57,376 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 18:39:57,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:39:57,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:57,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968244285] [2023-12-21 18:39:57,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968244285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:39:57,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:39:57,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 18:39:57,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125212067] [2023-12-21 18:39:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:39:57,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 18:39:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 18:39:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:39:57,380 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand has 4 states, 4 states have (on average 6.0) 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 18:39:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:57,452 INFO L93 Difference]: Finished difference Result 64 states and 92 transitions. [2023-12-21 18:39:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:39:57,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) 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 18:39:57,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:57,453 INFO L225 Difference]: With dead ends: 64 [2023-12-21 18:39:57,453 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 18:39:57,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:39:57,453 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:39:57,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 15 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:39:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 18:39:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-21 18:39:57,457 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 18:39:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-21 18:39:57,457 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 25 [2023-12-21 18:39:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:57,457 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-21 18:39:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) 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 18:39:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-21 18:39:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 18:39:57,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:57,458 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 18:39:57,464 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 18:39:57,660 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 18:39:57,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:57,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1411852856, now seen corresponding path program 1 times [2023-12-21 18:39:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:57,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755791186] [2023-12-21 18:39:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:39:57,661 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 18:39:57,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:57,662 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 18:39:57,678 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 18:39:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:39:57,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 18:39:57,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:57,805 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 18:39:57,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:39:57,912 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 18:39:57,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755791186] [2023-12-21 18:39:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755791186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:39:57,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:39:57,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-21 18:39:57,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611616932] [2023-12-21 18:39:57,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:39:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 18:39:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 18:39:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-21 18:39:57,914 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 18:39:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:58,262 INFO L93 Difference]: Finished difference Result 103 states and 141 transitions. [2023-12-21 18:39:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:39:58,262 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 18:39:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:58,263 INFO L225 Difference]: With dead ends: 103 [2023-12-21 18:39:58,263 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 18:39:58,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-21 18:39:58,264 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 249 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 18:39:58,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 59 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 18:39:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 18:39:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 41. [2023-12-21 18:39:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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 18:39:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-21 18:39:58,270 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 32 [2023-12-21 18:39:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:58,271 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-21 18:39:58,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 18:39:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-21 18:39:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 18:39:58,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:58,272 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 18:39:58,275 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 18:39:58,475 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 18:39:58,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:58,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -983377741, now seen corresponding path program 2 times [2023-12-21 18:39:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013924539] [2023-12-21 18:39:58,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:39:58,476 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 18:39:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:58,479 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 18:39:58,481 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 18:39:59,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:39:59,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:39:59,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 18:39:59,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:59,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:39:59,354 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 41 treesize of output 21 [2023-12-21 18:39:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:39:59,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:40:00,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:40:00,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 63 [2023-12-21 18:40:04,276 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 18:40:04,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:40:04,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013924539] [2023-12-21 18:40:04,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013924539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:40:04,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:40:04,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-21 18:40:04,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387103514] [2023-12-21 18:40:04,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:40:04,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 18:40:04,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:40:04,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 18:40:04,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=200, Unknown=1, NotChecked=0, Total=240 [2023-12-21 18:40:04,278 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 18:40:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:40:05,026 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2023-12-21 18:40:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 18:40:05,027 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) Word has length 40 [2023-12-21 18:40:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:40:05,027 INFO L225 Difference]: With dead ends: 74 [2023-12-21 18:40:05,027 INFO L226 Difference]: Without dead ends: 70 [2023-12-21 18:40:05,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=44, Invalid=227, Unknown=1, NotChecked=0, Total=272 [2023-12-21 18:40:05,028 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 18:40:05,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 122 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 18:40:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-21 18:40:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-12-21 18:40:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 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 18:40:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2023-12-21 18:40:05,041 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 40 [2023-12-21 18:40:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:40:05,043 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2023-12-21 18:40:05,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 18:40:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2023-12-21 18:40:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 18:40:05,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:40:05,047 INFO L195 NwaCegarLoop]: trace histogram [3, 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 18:40:05,053 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 18:40:05,253 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 18:40:05,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:40:05,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:40:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1490045062, now seen corresponding path program 3 times [2023-12-21 18:40:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:40:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074801019] [2023-12-21 18:40:05,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:40:05,254 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 18:40:05,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:40:05,255 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 18:40:05,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 18:40:05,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 18:40:05,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:40:05,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 18:40:05,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:40:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 18:40:05,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:40:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 18:40:05,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:40:05,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074801019] [2023-12-21 18:40:05,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074801019] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:40:05,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:40:05,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-21 18:40:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537744470] [2023-12-21 18:40:05,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:40:05,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 18:40:05,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:40:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 18:40:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:40:05,639 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 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 18:40:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:40:06,069 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2023-12-21 18:40:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 18:40:06,069 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 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) Word has length 41 [2023-12-21 18:40:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:40:06,070 INFO L225 Difference]: With dead ends: 105 [2023-12-21 18:40:06,070 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 18:40:06,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:40:06,071 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 46 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:40:06,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 18:40:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 18:40:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2023-12-21 18:40:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 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 18:40:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2023-12-21 18:40:06,080 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 41 [2023-12-21 18:40:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:40:06,081 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2023-12-21 18:40:06,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 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 18:40:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2023-12-21 18:40:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 18:40:06,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:40:06,081 INFO L195 NwaCegarLoop]: trace histogram [3, 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 18:40:06,101 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 18:40:06,282 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 18:40:06,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:40:06,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:40:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash -391550885, now seen corresponding path program 4 times [2023-12-21 18:40:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:40:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931820502] [2023-12-21 18:40:06,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:40:06,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:40:06,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:40:06,284 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 18:40:06,285 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 18:40:06,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:40:06,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:40:06,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 18:40:06,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:40:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 18:40:06,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:40:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 18:40:06,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:40:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931820502] [2023-12-21 18:40:06,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931820502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:40:06,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:40:06,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-21 18:40:06,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323987546] [2023-12-21 18:40:06,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:40:06,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 18:40:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:40:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 18:40:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:40:06,744 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 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 18:40:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:40:07,097 INFO L93 Difference]: Finished difference Result 143 states and 172 transitions. [2023-12-21 18:40:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 18:40:07,097 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 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 41 [2023-12-21 18:40:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:40:07,098 INFO L225 Difference]: With dead ends: 143 [2023-12-21 18:40:07,098 INFO L226 Difference]: Without dead ends: 71 [2023-12-21 18:40:07,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-12-21 18:40:07,099 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 18:40:07,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 76 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 18:40:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-21 18:40:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-21 18:40:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 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 18:40:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2023-12-21 18:40:07,107 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 41 [2023-12-21 18:40:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:40:07,107 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2023-12-21 18:40:07,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 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 18:40:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2023-12-21 18:40:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 18:40:07,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:40:07,110 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 18:40:07,118 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 18:40:07,311 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 18:40:07,311 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:40:07,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:40:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash -603402222, now seen corresponding path program 5 times [2023-12-21 18:40:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:40:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65921452] [2023-12-21 18:40:07,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:40:07,312 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 18:40:07,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:40:07,313 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 18:40:07,331 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 18:40:07,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 18:40:07,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:40:07,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 18:40:07,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:40:07,713 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 18:40:07,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:40:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:40:07,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:40:07,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65921452] [2023-12-21 18:40:07,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65921452] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:40:07,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:40:07,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-21 18:40:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822418004] [2023-12-21 18:40:07,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:40:07,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 18:40:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:40:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 18:40:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-21 18:40:07,892 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 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 18:40:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:40:08,127 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2023-12-21 18:40:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 18:40:08,127 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 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 18:40:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:40:08,127 INFO L225 Difference]: With dead ends: 106 [2023-12-21 18:40:08,128 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 18:40:08,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-21 18:40:08,128 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:40:08,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 51 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:40:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 18:40:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-21 18:40:08,137 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 18:40:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-12-21 18:40:08,137 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 42 [2023-12-21 18:40:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:40:08,137 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-12-21 18:40:08,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 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 18:40:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-12-21 18:40:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 18:40:08,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:40:08,138 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 18:40:08,144 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 18:40:08,343 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 18:40:08,344 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:40:08,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:40:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash 394500289, now seen corresponding path program 6 times [2023-12-21 18:40:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:40:08,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832072509] [2023-12-21 18:40:08,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:40:08,345 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 18:40:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:40:08,346 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 18:40:08,372 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 18:40:42,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-21 18:40:42,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:40:42,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 18:40:42,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:40:42,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:40:42,962 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 62 treesize of output 30 [2023-12-21 18:40:42,992 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 18:40:42,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:40:45,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:40:45,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 125 [2023-12-21 18:40:52,336 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 18:40:52,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:40:52,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832072509] [2023-12-21 18:40:52,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832072509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:40:52,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:40:52,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2023-12-21 18:40:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636974792] [2023-12-21 18:40:52,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:40:52,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 18:40:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:40:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 18:40:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=295, Unknown=1, NotChecked=0, Total=342 [2023-12-21 18:40:52,338 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 18:40:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:40:54,166 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2023-12-21 18:40:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 18:40:54,166 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 18:40:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:40:54,167 INFO L225 Difference]: With dead ends: 90 [2023-12-21 18:40:54,167 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 18:40:54,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=51, Invalid=328, Unknown=1, NotChecked=0, Total=380 [2023-12-21 18:40:54,168 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 18:40:54,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 18:40:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 18:40:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2023-12-21 18:40:54,181 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 18:40:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2023-12-21 18:40:54,181 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 49 [2023-12-21 18:40:54,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:40:54,181 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2023-12-21 18:40:54,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 18:40:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2023-12-21 18:40:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 18:40:54,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:40:54,182 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 18:40:54,221 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 18:40:54,412 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 18:40:54,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:40:54,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:40:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1235712482, now seen corresponding path program 7 times [2023-12-21 18:40:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:40:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530354982] [2023-12-21 18:40:54,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 18:40:54,413 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 18:40:54,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:40:54,414 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 18:40:54,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 18:40:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:40:54,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 18:40:54,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:40:54,740 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 18:40:54,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:40:55,018 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 18:40:55,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:40:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530354982] [2023-12-21 18:40:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530354982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:40:55,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:40:55,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-21 18:40:55,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514170206] [2023-12-21 18:40:55,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:40:55,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 18:40:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:40:55,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 18:40:55,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-12-21 18:40:55,020 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 18:40:55,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:40:55,722 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2023-12-21 18:40:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 18:40:55,723 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 18:40:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:40:55,723 INFO L225 Difference]: With dead ends: 164 [2023-12-21 18:40:55,723 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 18:40:55,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2023-12-21 18:40:55,724 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 158 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:40:55,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 93 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 18:40:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 18:40:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-21 18:40:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 83 states have internal predecessors, (99), 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 18:40:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2023-12-21 18:40:55,735 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 50 [2023-12-21 18:40:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:40:55,735 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2023-12-21 18:40:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 18:40:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2023-12-21 18:40:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 18:40:55,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:40:55,736 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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 18:40:55,742 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 (13)] Ended with exit code 0 [2023-12-21 18:40:55,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:40:55,942 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:40:55,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:40:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash -567554037, now seen corresponding path program 8 times [2023-12-21 18:40:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:40:55,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481573258] [2023-12-21 18:40:55,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:40:55,943 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 18:40:55,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:40:55,944 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:40:55,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 18:40:56,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:40:56,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:40:56,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 18:40:56,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:40:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-21 18:40:56,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:40:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-21 18:40:56,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:40:56,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481573258] [2023-12-21 18:40:56,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481573258] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:40:56,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:40:56,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-12-21 18:40:56,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287839971] [2023-12-21 18:40:56,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:40:56,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 18:40:56,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:40:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 18:40:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-21 18:40:56,670 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 18:40:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:40:57,138 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2023-12-21 18:40:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 18:40:57,139 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 51 [2023-12-21 18:40:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:40:57,139 INFO L225 Difference]: With dead ends: 126 [2023-12-21 18:40:57,139 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 18:40:57,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-21 18:40:57,142 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:40:57,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 73 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:40:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 18:40:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-21 18:40:57,149 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 18:40:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2023-12-21 18:40:57,150 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 51 [2023-12-21 18:40:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:40:57,150 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2023-12-21 18:40:57,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 18:40:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2023-12-21 18:40:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 18:40:57,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:40:57,150 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 18:40:57,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 18:40:57,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:40:57,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:40:57,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:40:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1905328461, now seen corresponding path program 9 times [2023-12-21 18:40:57,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:40:57,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057118836] [2023-12-21 18:40:57,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:40:57,357 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 18:40:57,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:40:57,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:40:57,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process Received shutdown request... [2023-12-21 18:54:41,650 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:54:41,651 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 18:54:42,702 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 18:54:42,851 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 (15)] Forcibly destroying the process [2023-12-21 18:54:42,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 18:54:42,971 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:54:42,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:42,971 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 [2057118836] and IpTcStrategyModuleCvc4 [428843854]. [2023-12-21 18:54:42,974 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 (15)] Forceful destruction successful, exit code 137 [2023-12-21 18:54:42,976 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1] [2023-12-21 18:54:42,978 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:54:42,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:54:42 BoogieIcfgContainer [2023-12-21 18:54:42,981 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:54:42,982 INFO L158 Benchmark]: Toolchain (without parser) took 888031.82ms. Allocated memory was 195.0MB in the beginning and 251.7MB in the end (delta: 56.6MB). Free memory was 156.2MB in the beginning and 166.3MB in the end (delta: -10.1MB). Peak memory consumption was 47.9MB. Max. memory is 8.0GB. [2023-12-21 18:54:42,982 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 195.0MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:54:42,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.51ms. Allocated memory is still 195.0MB. Free memory was 156.0MB in the beginning and 143.6MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 18:54:42,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.79ms. Allocated memory is still 195.0MB. Free memory was 143.6MB in the beginning and 141.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:54:42,983 INFO L158 Benchmark]: Boogie Preprocessor took 38.41ms. Allocated memory is still 195.0MB. Free memory was 141.9MB in the beginning and 139.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:54:42,983 INFO L158 Benchmark]: RCFGBuilder took 408.86ms. Allocated memory is still 195.0MB. Free memory was 139.4MB in the beginning and 120.3MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-21 18:54:42,983 INFO L158 Benchmark]: TraceAbstraction took 887345.83ms. Allocated memory was 195.0MB in the beginning and 251.7MB in the end (delta: 56.6MB). Free memory was 119.5MB in the beginning and 166.3MB in the end (delta: -46.8MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2023-12-21 18:54:42,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 195.0MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.51ms. Allocated memory is still 195.0MB. Free memory was 156.0MB in the beginning and 143.6MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.79ms. Allocated memory is still 195.0MB. Free memory was 143.6MB in the beginning and 141.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.41ms. Allocated memory is still 195.0MB. Free memory was 141.9MB in the beginning and 139.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 408.86ms. Allocated memory is still 195.0MB. Free memory was 139.4MB in the beginning and 120.3MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 887345.83ms. Allocated memory was 195.0MB in the beginning and 251.7MB in the end (delta: 56.6MB). Free memory was 119.5MB in the beginning and 166.3MB in the end (delta: -46.8MB). Peak memory consumption was 11.2MB. 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 [2057118836] and IpTcStrategyModuleCvc4 [428843854]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 887.3s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 567 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 567 mSDsluCounter, 790 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 571 mSDsCounter, 470 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3451 IncrementalHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 470 mSolverCounterUnsat, 219 mSDtfsCounter, 3451 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 819 GetRequests, 666 SyntacticMatches, 16 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=12, InterpolantAutomatonStates: 103, 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, 13 MinimizatonAttempts, 49 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 35.5s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 462 NumberOfCodeBlocks, 459 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 810 ConstructedInterpolants, 2 QuantifiedInterpolants, 5821 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1135 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 372/619 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