/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/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:32:36,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:32:36,479 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:32:36,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:32:36,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:32:36,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:32:36,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:32:36,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:32:36,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:32:36,509 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:32:36,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:32:36,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:32:36,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:32:36,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:32:36,511 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:32:36,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:32:36,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:32:36,511 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:32:36,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:32:36,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:32:36,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:32:36,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:32:36,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:32:36,514 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:32:36,514 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:32:36,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:32:36,515 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:32:36,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:32:36,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:32:36,515 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:32:36,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:32:36,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:32:36,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:32:36,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:32:36,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:32:36,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:32:36,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:32:36,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:32:36,518 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:32:36,518 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:32:36,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:32:36,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:32:36,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:32:36,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:32:36,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:32:36,519 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:32:36,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:32:36,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:32:36,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:32:36,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:32:36,773 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:32:36,773 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:32:36,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i [2023-12-25 06:32:37,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:32:38,129 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:32:38,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i [2023-12-25 06:32:38,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80f3f2a7/0abf0c34c0a048e29a14972a7377bac3/FLAGbe98f91e4 [2023-12-25 06:32:38,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80f3f2a7/0abf0c34c0a048e29a14972a7377bac3 [2023-12-25 06:32:38,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:32:38,151 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:32:38,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:32:38,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:32:38,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:32:38,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db53fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38, skipping insertion in model container [2023-12-25 06:32:38,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:32:38,322 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i[1692,1705] [2023-12-25 06:32:38,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:32:38,347 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:32:38,360 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i[1692,1705] [2023-12-25 06:32:38,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:32:38,387 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:32:38,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38 WrapperNode [2023-12-25 06:32:38,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:32:38,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:32:38,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:32:38,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:32:38,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,423 INFO L138 Inliner]: procedures = 19, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-12-25 06:32:38,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:32:38,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:32:38,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:32:38,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:32:38,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,454 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 3, 13]. 72 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 5 writes are split as follows [0, 1, 4]. [2023-12-25 06:32:38,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:32:38,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:32:38,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:32:38,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:32:38,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (1/1) ... [2023-12-25 06:32:38,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:32:38,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:32:38,505 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) [2023-12-25 06:32:38,531 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 [2023-12-25 06:32:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:32:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_32_to_33_0 [2023-12-25 06:32:38,539 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_32_to_33_0 [2023-12-25 06:32:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:32:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 06:32:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-25 06:32:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-25 06:32:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-25 06:32:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-25 06:32:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-25 06:32:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:32:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:32:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 06:32:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 06:32:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-25 06:32:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-25 06:32:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-25 06:32:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-25 06:32:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_36_to_40_0 [2023-12-25 06:32:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_36_to_40_0 [2023-12-25 06:32:38,613 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:32:38,614 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:32:38,748 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:32:38,794 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:32:38,794 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:32:38,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:32:38 BoogieIcfgContainer [2023-12-25 06:32:38,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:32:38,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:32:38,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:32:38,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:32:38,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:32:38" (1/3) ... [2023-12-25 06:32:38,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6ae460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:32:38, skipping insertion in model container [2023-12-25 06:32:38,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:32:38" (2/3) ... [2023-12-25 06:32:38,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6ae460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:32:38, skipping insertion in model container [2023-12-25 06:32:38,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:32:38" (3/3) ... [2023-12-25 06:32:38,808 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_1-1.i [2023-12-25 06:32:38,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:32:38,825 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:32:38,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:32:38,876 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;@3dc1e19a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:32:38,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:32:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-25 06:32:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-25 06:32:38,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:38,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:38,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:38,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash -861965109, now seen corresponding path program 1 times [2023-12-25 06:32:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:38,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429739287] [2023-12-25 06:32:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:32:38,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:32:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:38,910 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) [2023-12-25 06:32:38,922 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 [2023-12-25 06:32:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:32:39,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 06:32:39,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:39,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:32:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:32:39,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:32:39,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:32:39,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429739287] [2023-12-25 06:32:39,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429739287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:32:39,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:32:39,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:32:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889580545] [2023-12-25 06:32:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:32:39,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:32:39,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:32:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:32:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:32:39,375 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:32:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:32:39,574 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2023-12-25 06:32:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:32:39,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-25 06:32:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:32:39,584 INFO L225 Difference]: With dead ends: 54 [2023-12-25 06:32:39,584 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:32:39,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:32:39,592 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:32:39,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 33 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:32:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:32:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-25 06:32:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-25 06:32:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-12-25 06:32:39,633 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2023-12-25 06:32:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:32:39,633 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-12-25 06:32:39,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:32:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-12-25 06:32:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-25 06:32:39,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:39,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:39,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 06:32:39,838 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 [2023-12-25 06:32:39,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:39,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1296273823, now seen corresponding path program 1 times [2023-12-25 06:32:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:39,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813018891] [2023-12-25 06:32:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:32:39,841 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 [2023-12-25 06:32:39,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:39,843 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) [2023-12-25 06:32:39,847 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 [2023-12-25 06:32:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:32:39,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:32:39,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:39,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:32:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:32:40,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:32:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:32:40,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:32:40,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813018891] [2023-12-25 06:32:40,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813018891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:32:40,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:32:40,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-25 06:32:40,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400492221] [2023-12-25 06:32:40,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:32:40,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:32:40,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:32:40,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:32:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:32:40,694 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 06:32:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:32:41,036 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-12-25 06:32:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:32:41,037 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2023-12-25 06:32:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:32:41,038 INFO L225 Difference]: With dead ends: 45 [2023-12-25 06:32:41,038 INFO L226 Difference]: Without dead ends: 28 [2023-12-25 06:32:41,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:32:41,040 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:32:41,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 44 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:32:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-25 06:32:41,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-25 06:32:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-25 06:32:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-12-25 06:32:41,047 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2023-12-25 06:32:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:32:41,047 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-12-25 06:32:41,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 06:32:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-12-25 06:32:41,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-25 06:32:41,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:41,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:41,056 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 [2023-12-25 06:32:41,251 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 [2023-12-25 06:32:41,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:41,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:41,253 INFO L85 PathProgramCache]: Analyzing trace with hash 963661205, now seen corresponding path program 2 times [2023-12-25 06:32:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:41,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657508939] [2023-12-25 06:32:41,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:32:41,254 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 [2023-12-25 06:32:41,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:41,255 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) [2023-12-25 06:32:41,257 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 [2023-12-25 06:32:41,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:32:41,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:32:41,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-25 06:32:41,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:41,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:32:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:32:41,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:32:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:32:42,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:32:42,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657508939] [2023-12-25 06:32:42,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657508939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:32:42,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:32:42,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2023-12-25 06:32:42,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326874960] [2023-12-25 06:32:42,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:32:42,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 06:32:42,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:32:42,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 06:32:42,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:32:42,640 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 22 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-25 06:32:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:32:43,081 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2023-12-25 06:32:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:32:43,082 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 25 [2023-12-25 06:32:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:32:43,083 INFO L225 Difference]: With dead ends: 47 [2023-12-25 06:32:43,083 INFO L226 Difference]: Without dead ends: 30 [2023-12-25 06:32:43,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:32:43,085 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:32:43,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 63 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:32:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-25 06:32:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-25 06:32:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-25 06:32:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-12-25 06:32:43,091 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2023-12-25 06:32:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:32:43,092 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-12-25 06:32:43,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-25 06:32:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-12-25 06:32:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-25 06:32:43,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:43,093 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:43,109 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 [2023-12-25 06:32:43,294 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 [2023-12-25 06:32:43,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:43,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1954063657, now seen corresponding path program 3 times [2023-12-25 06:32:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:43,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966108769] [2023-12-25 06:32:43,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:32:43,297 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 [2023-12-25 06:32:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:43,298 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) [2023-12-25 06:32:43,311 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 [2023-12-25 06:32:43,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:32:43,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:32:43,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-25 06:32:43,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:43,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:32:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:32:43,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:32:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:32:45,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:32:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966108769] [2023-12-25 06:32:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966108769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:32:45,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:32:45,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2023-12-25 06:32:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037888711] [2023-12-25 06:32:45,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:32:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 06:32:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:32:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 06:32:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:32:45,591 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 29 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 8 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:32:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:32:46,529 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-12-25 06:32:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:32:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 8 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 30 [2023-12-25 06:32:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:32:46,531 INFO L225 Difference]: With dead ends: 54 [2023-12-25 06:32:46,531 INFO L226 Difference]: Without dead ends: 37 [2023-12-25 06:32:46,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:32:46,533 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:32:46,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 91 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:32:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-25 06:32:46,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-12-25 06:32:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 06:32:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-12-25 06:32:46,539 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 30 [2023-12-25 06:32:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:32:46,540 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-12-25 06:32:46,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 8 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:32:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-12-25 06:32:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-25 06:32:46,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:46,541 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:46,544 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 [2023-12-25 06:32:46,744 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 [2023-12-25 06:32:46,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:46,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1383115103, now seen corresponding path program 4 times [2023-12-25 06:32:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:46,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513770805] [2023-12-25 06:32:46,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:32:46,746 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 [2023-12-25 06:32:46,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:46,747 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) [2023-12-25 06:32:46,748 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 [2023-12-25 06:32:46,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:32:46,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:32:46,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 06:32:46,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:46,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:32:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-25 06:32:47,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:32:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:32:49,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:32:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513770805] [2023-12-25 06:32:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513770805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:32:49,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:32:49,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21] total 31 [2023-12-25 06:32:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342864897] [2023-12-25 06:32:49,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:32:49,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-25 06:32:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:32:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-25 06:32:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:32:49,176 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 32 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 8 states have call successors, (9), 7 states have call predecessors, (9), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-25 06:32:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:32:49,904 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2023-12-25 06:32:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:32:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 8 states have call successors, (9), 7 states have call predecessors, (9), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) Word has length 35 [2023-12-25 06:32:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:32:49,906 INFO L225 Difference]: With dead ends: 51 [2023-12-25 06:32:49,906 INFO L226 Difference]: Without dead ends: 34 [2023-12-25 06:32:49,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:32:49,908 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:32:49,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 121 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:32:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-25 06:32:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-25 06:32:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-25 06:32:49,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-12-25 06:32:49,913 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 35 [2023-12-25 06:32:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:32:49,913 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-12-25 06:32:49,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 8 states have call successors, (9), 7 states have call predecessors, (9), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-25 06:32:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-12-25 06:32:49,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 06:32:49,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:49,915 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:49,925 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 [2023-12-25 06:32:50,118 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 [2023-12-25 06:32:50,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:50,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2124606387, now seen corresponding path program 5 times [2023-12-25 06:32:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:50,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952926786] [2023-12-25 06:32:50,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:32:50,120 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 [2023-12-25 06:32:50,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:50,121 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) [2023-12-25 06:32:50,121 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 [2023-12-25 06:32:50,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 06:32:50,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:32:50,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-25 06:32:50,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:50,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:32:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-25 06:32:50,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:32:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:32:54,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:32:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952926786] [2023-12-25 06:32:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952926786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:32:54,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:32:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25] total 38 [2023-12-25 06:32:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349329604] [2023-12-25 06:32:54,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:32:54,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-25 06:32:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:32:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-25 06:32:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1290, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:32:54,196 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 39 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 10 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-25 06:32:55,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:32:55,959 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2023-12-25 06:32:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:32:55,960 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 10 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) Word has length 40 [2023-12-25 06:32:55,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:32:55,961 INFO L225 Difference]: With dead ends: 58 [2023-12-25 06:32:55,961 INFO L226 Difference]: Without dead ends: 41 [2023-12-25 06:32:55,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=338, Invalid=1824, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:32:55,963 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 77 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:32:55,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 133 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:32:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-25 06:32:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2023-12-25 06:32:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-25 06:32:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-12-25 06:32:55,974 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 40 [2023-12-25 06:32:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:32:55,974 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-12-25 06:32:55,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 10 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-25 06:32:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-12-25 06:32:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 06:32:55,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:55,976 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:55,980 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 [2023-12-25 06:32:56,180 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 [2023-12-25 06:32:56,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:56,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:56,181 INFO L85 PathProgramCache]: Analyzing trace with hash -799995863, now seen corresponding path program 6 times [2023-12-25 06:32:56,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:56,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067066732] [2023-12-25 06:32:56,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:32:56,182 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 [2023-12-25 06:32:56,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:56,183 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) [2023-12-25 06:32:56,183 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 [2023-12-25 06:32:56,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 06:32:56,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:32:56,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-25 06:32:56,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:56,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:32:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 10 proven. 48 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-25 06:32:56,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:33:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:33:01,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:33:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067066732] [2023-12-25 06:33:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067066732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:33:01,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:33:01,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29] total 43 [2023-12-25 06:33:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326878095] [2023-12-25 06:33:01,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:33:01,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-25 06:33:01,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:33:01,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-25 06:33:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1664, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 06:33:01,240 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 44 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 35 states have internal predecessors, (43), 11 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-25 06:33:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:33:03,393 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2023-12-25 06:33:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:33:03,397 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 35 states have internal predecessors, (43), 11 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) Word has length 45 [2023-12-25 06:33:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:33:03,398 INFO L225 Difference]: With dead ends: 60 [2023-12-25 06:33:03,398 INFO L226 Difference]: Without dead ends: 43 [2023-12-25 06:33:03,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=418, Invalid=2338, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 06:33:03,399 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 159 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:33:03,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 168 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:33:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-25 06:33:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-12-25 06:33:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (11), 10 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-25 06:33:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-12-25 06:33:03,405 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 45 [2023-12-25 06:33:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:33:03,406 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-12-25 06:33:03,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 35 states have internal predecessors, (43), 11 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-25 06:33:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-12-25 06:33:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-25 06:33:03,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:33:03,407 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:33:03,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:33:03,612 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 [2023-12-25 06:33:03,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:33:03,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:33:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1342629181, now seen corresponding path program 7 times [2023-12-25 06:33:03,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:33:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95289343] [2023-12-25 06:33:03,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:33:03,614 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 [2023-12-25 06:33:03,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:33:03,615 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) [2023-12-25 06:33:03,616 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 [2023-12-25 06:33:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:33:03,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-25 06:33:03,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:33:03,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:33:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-25 06:33:04,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:33:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:33:08,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:33:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95289343] [2023-12-25 06:33:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95289343] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:33:08,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:33:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 33] total 46 [2023-12-25 06:33:08,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203716372] [2023-12-25 06:33:08,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:33:08,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-25 06:33:08,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:33:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-25 06:33:08,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:33:08,787 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 47 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (12), 10 states have call predecessors, (12), 16 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-25 06:33:10,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:33:10,524 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-12-25 06:33:10,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:33:10,525 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (12), 10 states have call predecessors, (12), 16 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) Word has length 50 [2023-12-25 06:33:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:33:10,526 INFO L225 Difference]: With dead ends: 57 [2023-12-25 06:33:10,526 INFO L226 Difference]: Without dead ends: 40 [2023-12-25 06:33:10,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=365, Invalid=2605, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 06:33:10,528 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:33:10,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 265 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:33:10,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-25 06:33:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-25 06:33:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 3 states have call predecessors, (6), 10 states have return successors, (12), 11 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-25 06:33:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-12-25 06:33:10,533 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 50 [2023-12-25 06:33:10,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:33:10,533 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-12-25 06:33:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (12), 10 states have call predecessors, (12), 16 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-25 06:33:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-12-25 06:33:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-25 06:33:10,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:33:10,534 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:33:10,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-25 06:33:10,742 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 [2023-12-25 06:33:10,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:33:10,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:33:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1929505267, now seen corresponding path program 8 times [2023-12-25 06:33:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:33:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062892053] [2023-12-25 06:33:10,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:33:10,744 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 [2023-12-25 06:33:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:33:10,746 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) [2023-12-25 06:33:10,756 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 [2023-12-25 06:33:10,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:33:10,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:33:10,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 92 conjunts are in the unsatisfiable core [2023-12-25 06:33:10,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:33:10,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:33:11,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:33:11,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:33:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-25 06:33:11,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:33:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:33:17,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:33:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062892053] [2023-12-25 06:33:17,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062892053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:33:17,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:33:17,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 37] total 51 [2023-12-25 06:33:17,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003167740] [2023-12-25 06:33:17,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:33:17,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 06:33:17,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:33:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 06:33:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2406, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 06:33:17,038 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 52 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 12 states have call successors, (13), 11 states have call predecessors, (13), 18 states have return successors, (18), 17 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-25 06:33:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:33:19,170 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2023-12-25 06:33:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:33:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 12 states have call successors, (13), 11 states have call predecessors, (13), 18 states have return successors, (18), 17 states have call predecessors, (18), 11 states have call successors, (18) Word has length 55 [2023-12-25 06:33:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:33:19,172 INFO L225 Difference]: With dead ends: 59 [2023-12-25 06:33:19,172 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:33:19,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=427, Invalid=3233, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 06:33:19,173 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 178 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:33:19,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 303 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:33:19,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:33:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-25 06:33:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 11 states have return successors, (13), 12 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-25 06:33:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-12-25 06:33:19,179 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 55 [2023-12-25 06:33:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:33:19,179 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-12-25 06:33:19,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 12 states have call successors, (13), 11 states have call predecessors, (13), 18 states have return successors, (18), 17 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-25 06:33:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-12-25 06:33:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 06:33:19,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:33:19,180 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:33:19,189 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 [2023-12-25 06:33:19,388 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 [2023-12-25 06:33:19,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:33:19,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:33:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1932071367, now seen corresponding path program 9 times [2023-12-25 06:33:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:33:19,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894708673] [2023-12-25 06:33:19,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:33:19,390 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 [2023-12-25 06:33:19,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:33:19,393 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) [2023-12-25 06:33:19,403 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 [2023-12-25 06:33:19,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-25 06:33:19,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:33:19,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 103 conjunts are in the unsatisfiable core [2023-12-25 06:33:19,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:33:19,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:33:20,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:33:20,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:33:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 16 proven. 99 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-25 06:33:20,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:33:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:33:28,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:33:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894708673] [2023-12-25 06:33:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894708673] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:33:28,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:33:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 41] total 58 [2023-12-25 06:33:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070931114] [2023-12-25 06:33:28,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:33:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-25 06:33:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:33:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-25 06:33:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=3074, Unknown=0, NotChecked=0, Total=3422 [2023-12-25 06:33:28,845 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 59 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 14 states have call successors, (15), 12 states have call predecessors, (15), 20 states have return successors, (20), 19 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-25 06:33:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:33:33,132 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-12-25 06:33:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:33:33,133 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 14 states have call successors, (15), 12 states have call predecessors, (15), 20 states have return successors, (20), 19 states have call predecessors, (20), 13 states have call successors, (20) Word has length 60 [2023-12-25 06:33:33,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:33:33,134 INFO L225 Difference]: With dead ends: 66 [2023-12-25 06:33:33,134 INFO L226 Difference]: Without dead ends: 49 [2023-12-25 06:33:33,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=706, Invalid=4264, Unknown=0, NotChecked=0, Total=4970 [2023-12-25 06:33:33,135 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 254 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:33:33,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 309 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 06:33:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-25 06:33:33,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2023-12-25 06:33:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 12 states have return successors, (14), 13 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-25 06:33:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-12-25 06:33:33,141 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 60 [2023-12-25 06:33:33,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:33:33,141 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-12-25 06:33:33,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 14 states have call successors, (15), 12 states have call predecessors, (15), 20 states have return successors, (20), 19 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-25 06:33:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-12-25 06:33:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 06:33:33,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:33:33,142 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:33:33,149 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 [2023-12-25 06:33:33,346 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 [2023-12-25 06:33:33,347 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:33:33,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:33:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 28561085, now seen corresponding path program 10 times [2023-12-25 06:33:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:33:33,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734053589] [2023-12-25 06:33:33,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:33:33,348 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 [2023-12-25 06:33:33,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:33:33,349 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) [2023-12-25 06:33:33,350 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 [2023-12-25 06:33:33,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:33:33,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:33:33,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-25 06:33:33,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:33:33,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:33:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-25 06:33:34,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:33:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:33:42,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:33:42,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734053589] [2023-12-25 06:33:42,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734053589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:33:42,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:33:42,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 45] total 61 [2023-12-25 06:33:42,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49483317] [2023-12-25 06:33:42,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:33:42,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-25 06:33:42,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:33:42,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-25 06:33:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3473, Unknown=0, NotChecked=0, Total=3782 [2023-12-25 06:33:42,153 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 62 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 14 states have call successors, (15), 13 states have call predecessors, (15), 22 states have return successors, (22), 21 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-25 06:33:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:33:44,852 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-12-25 06:33:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:33:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 14 states have call successors, (15), 13 states have call predecessors, (15), 22 states have return successors, (22), 21 states have call predecessors, (22), 13 states have call successors, (22) Word has length 65 [2023-12-25 06:33:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:33:44,854 INFO L225 Difference]: With dead ends: 63 [2023-12-25 06:33:44,854 INFO L226 Difference]: Without dead ends: 46 [2023-12-25 06:33:44,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=563, Invalid=4693, Unknown=0, NotChecked=0, Total=5256 [2023-12-25 06:33:44,856 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 218 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:33:44,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 373 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 06:33:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-25 06:33:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-25 06:33:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 13 states have return successors, (15), 14 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-25 06:33:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2023-12-25 06:33:44,861 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 65 [2023-12-25 06:33:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:33:44,862 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2023-12-25 06:33:44,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 14 states have call successors, (15), 13 states have call predecessors, (15), 22 states have return successors, (22), 21 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-25 06:33:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2023-12-25 06:33:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 06:33:44,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:33:44,863 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:33:44,876 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 [2023-12-25 06:33:45,068 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 [2023-12-25 06:33:45,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:33:45,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:33:45,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1489891665, now seen corresponding path program 11 times [2023-12-25 06:33:45,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:33:45,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148290528] [2023-12-25 06:33:45,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:33:45,070 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 [2023-12-25 06:33:45,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:33:45,071 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) [2023-12-25 06:33:45,075 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 [2023-12-25 06:33:45,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-25 06:33:45,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:33:45,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 126 conjunts are in the unsatisfiable core [2023-12-25 06:33:45,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:33:45,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:33:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 48 proven. 143 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-25 06:33:46,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:33:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:33:58,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:33:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148290528] [2023-12-25 06:33:58,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148290528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:33:58,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:33:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 49] total 68 [2023-12-25 06:33:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030488937] [2023-12-25 06:33:58,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:33:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-25 06:33:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:33:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-25 06:33:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=4254, Unknown=0, NotChecked=0, Total=4692 [2023-12-25 06:33:58,437 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 69 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 55 states have internal predecessors, (63), 16 states have call successors, (17), 14 states have call predecessors, (17), 24 states have return successors, (24), 23 states have call predecessors, (24), 15 states have call successors, (24) [2023-12-25 06:34:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:34:05,199 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2023-12-25 06:34:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 06:34:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 55 states have internal predecessors, (63), 16 states have call successors, (17), 14 states have call predecessors, (17), 24 states have return successors, (24), 23 states have call predecessors, (24), 15 states have call successors, (24) Word has length 70 [2023-12-25 06:34:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:34:05,201 INFO L225 Difference]: With dead ends: 70 [2023-12-25 06:34:05,201 INFO L226 Difference]: Without dead ends: 53 [2023-12-25 06:34:05,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1524 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=938, Invalid=5868, Unknown=0, NotChecked=0, Total=6806 [2023-12-25 06:34:05,211 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 284 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:34:05,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 409 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 06:34:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-25 06:34:05,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2023-12-25 06:34:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 14 states have return successors, (16), 15 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-25 06:34:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2023-12-25 06:34:05,217 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 70 [2023-12-25 06:34:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:34:05,217 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2023-12-25 06:34:05,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 55 states have internal predecessors, (63), 16 states have call successors, (17), 14 states have call predecessors, (17), 24 states have return successors, (24), 23 states have call predecessors, (24), 15 states have call successors, (24) [2023-12-25 06:34:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2023-12-25 06:34:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 06:34:05,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:34:05,218 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:34:05,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:34:05,424 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 [2023-12-25 06:34:05,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:34:05,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:34:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1255618183, now seen corresponding path program 12 times [2023-12-25 06:34:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:34:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045771066] [2023-12-25 06:34:05,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:34:05,425 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 [2023-12-25 06:34:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:34:05,426 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) [2023-12-25 06:34:05,428 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 [2023-12-25 06:34:05,761 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-25 06:34:05,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:34:05,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-25 06:34:05,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:34:05,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:34:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:34:06,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:34:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 22 proven. 168 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-25 06:34:06,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:34:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:34:20,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:34:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045771066] [2023-12-25 06:34:20,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045771066] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:34:20,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:34:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 53] total 73 [2023-12-25 06:34:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747143971] [2023-12-25 06:34:20,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:34:20,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-25 06:34:20,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:34:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-25 06:34:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=4916, Unknown=0, NotChecked=0, Total=5402 [2023-12-25 06:34:20,362 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 74 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (18), 15 states have call predecessors, (18), 26 states have return successors, (26), 25 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-25 06:34:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:34:28,485 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2023-12-25 06:34:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 06:34:28,486 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (18), 15 states have call predecessors, (18), 26 states have return successors, (26), 25 states have call predecessors, (26), 16 states have call successors, (26) Word has length 75 [2023-12-25 06:34:28,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:34:28,486 INFO L225 Difference]: With dead ends: 72 [2023-12-25 06:34:28,486 INFO L226 Difference]: Without dead ends: 55 [2023-12-25 06:34:28,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1066, Invalid=6766, Unknown=0, NotChecked=0, Total=7832 [2023-12-25 06:34:28,489 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 394 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:34:28,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 527 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 06:34:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-25 06:34:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2023-12-25 06:34:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 15 states have return successors, (17), 16 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-25 06:34:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-12-25 06:34:28,494 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 75 [2023-12-25 06:34:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:34:28,495 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-12-25 06:34:28,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (18), 15 states have call predecessors, (18), 26 states have return successors, (26), 25 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-25 06:34:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-12-25 06:34:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 06:34:28,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:34:28,496 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:34:28,505 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 (14)] Ended with exit code 0 [2023-12-25 06:34:28,702 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 [2023-12-25 06:34:28,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:34:28,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:34:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1745222693, now seen corresponding path program 13 times [2023-12-25 06:34:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:34:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674178452] [2023-12-25 06:34:28,704 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:34:28,704 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 [2023-12-25 06:34:28,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:34:28,705 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) [2023-12-25 06:34:28,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 06:34:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:34:28,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-25 06:34:28,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:34:28,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:34:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-12-25 06:34:29,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:34:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:34:43,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:34:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674178452] [2023-12-25 06:34:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674178452] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:34:43,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:34:43,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 57] total 76 [2023-12-25 06:34:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546305237] [2023-12-25 06:34:43,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:34:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-25 06:34:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:34:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-25 06:34:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=5441, Unknown=0, NotChecked=0, Total=5852 [2023-12-25 06:34:43,168 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 77 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 17 states have call successors, (18), 16 states have call predecessors, (18), 28 states have return successors, (28), 27 states have call predecessors, (28), 16 states have call successors, (28) [2023-12-25 06:34:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:34:47,914 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2023-12-25 06:34:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:34:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 17 states have call successors, (18), 16 states have call predecessors, (18), 28 states have return successors, (28), 27 states have call predecessors, (28), 16 states have call successors, (28) Word has length 80 [2023-12-25 06:34:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:34:47,916 INFO L225 Difference]: With dead ends: 69 [2023-12-25 06:34:47,916 INFO L226 Difference]: Without dead ends: 52 [2023-12-25 06:34:47,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=797, Invalid=7393, Unknown=0, NotChecked=0, Total=8190 [2023-12-25 06:34:47,917 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 201 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:34:47,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 595 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 06:34:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-25 06:34:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-25 06:34:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.103448275862069) internal successors, (32), 31 states have internal predecessors, (32), 6 states have call successors, (6), 3 states have call predecessors, (6), 16 states have return successors, (18), 17 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-25 06:34:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2023-12-25 06:34:47,921 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 80 [2023-12-25 06:34:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:34:47,922 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2023-12-25 06:34:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 17 states have call successors, (18), 16 states have call predecessors, (18), 28 states have return successors, (28), 27 states have call predecessors, (28), 16 states have call successors, (28) [2023-12-25 06:34:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2023-12-25 06:34:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 06:34:47,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:34:47,923 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:34:47,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-25 06:34:48,129 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 [2023-12-25 06:34:48,129 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:34:48,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:34:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash 605856081, now seen corresponding path program 14 times [2023-12-25 06:34:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:34:48,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615312486] [2023-12-25 06:34:48,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:34:48,130 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 [2023-12-25 06:34:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:34:48,131 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:34:48,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 06:34:48,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:34:48,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:34:48,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 146 conjunts are in the unsatisfiable core [2023-12-25 06:34:48,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:34:48,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:34:49,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:34:49,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:34:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-12-25 06:34:49,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:35:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:35:04,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:35:04,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615312486] [2023-12-25 06:35:04,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615312486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:35:04,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:35:04,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 61] total 81 [2023-12-25 06:35:04,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760545834] [2023-12-25 06:35:04,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:35:04,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-12-25 06:35:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:35:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-12-25 06:35:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=6195, Unknown=0, NotChecked=0, Total=6642 [2023-12-25 06:35:04,471 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 82 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 18 states have call successors, (19), 17 states have call predecessors, (19), 30 states have return successors, (30), 29 states have call predecessors, (30), 17 states have call successors, (30) [2023-12-25 06:35:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:35:10,020 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2023-12-25 06:35:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 06:35:10,020 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 18 states have call successors, (19), 17 states have call predecessors, (19), 30 states have return successors, (30), 29 states have call predecessors, (30), 17 states have call successors, (30) Word has length 85 [2023-12-25 06:35:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:35:10,021 INFO L225 Difference]: With dead ends: 71 [2023-12-25 06:35:10,021 INFO L226 Difference]: Without dead ends: 54 [2023-12-25 06:35:10,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=883, Invalid=8429, Unknown=0, NotChecked=0, Total=9312 [2023-12-25 06:35:10,022 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 256 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:35:10,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 721 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 06:35:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-25 06:35:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-25 06:35:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.1) internal successors, (33), 32 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 17 states have return successors, (19), 18 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-25 06:35:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2023-12-25 06:35:10,027 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 85 [2023-12-25 06:35:10,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:35:10,027 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2023-12-25 06:35:10,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 18 states have call successors, (19), 17 states have call predecessors, (19), 30 states have return successors, (30), 29 states have call predecessors, (30), 17 states have call successors, (30) [2023-12-25 06:35:10,027 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2023-12-25 06:35:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 06:35:10,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:35:10,028 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:35:10,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:35:10,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:35:10,234 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:35:10,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:35:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash 770820453, now seen corresponding path program 15 times [2023-12-25 06:35:10,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:35:10,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733698960] [2023-12-25 06:35:10,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:35:10,235 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 [2023-12-25 06:35:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:35:10,236 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:35:10,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 06:35:10,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-25 06:35:10,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:35:10,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 157 conjunts are in the unsatisfiable core [2023-12-25 06:35:10,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:35:10,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:35:12,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:35:12,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:35:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 28 proven. 255 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-12-25 06:35:12,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:35:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:35:32,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:35:32,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733698960] [2023-12-25 06:35:32,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733698960] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:35:32,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:35:32,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 65] total 88 [2023-12-25 06:35:32,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253696381] [2023-12-25 06:35:32,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:35:32,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-25 06:35:32,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:35:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-25 06:35:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=7190, Unknown=0, NotChecked=0, Total=7832 [2023-12-25 06:35:32,515 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 89 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 71 states have internal predecessors, (79), 20 states have call successors, (21), 18 states have call predecessors, (21), 32 states have return successors, (32), 31 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-25 06:35:44,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:35:44,849 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2023-12-25 06:35:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 06:35:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 71 states have internal predecessors, (79), 20 states have call successors, (21), 18 states have call predecessors, (21), 32 states have return successors, (32), 31 states have call predecessors, (32), 19 states have call successors, (32) Word has length 90 [2023-12-25 06:35:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:35:44,851 INFO L225 Difference]: With dead ends: 78 [2023-12-25 06:35:44,851 INFO L226 Difference]: Without dead ends: 61 [2023-12-25 06:35:44,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2510 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=1498, Invalid=9844, Unknown=0, NotChecked=0, Total=11342 [2023-12-25 06:35:44,852 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 544 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:35:44,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 609 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 06:35:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-25 06:35:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-12-25 06:35:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 31 states have (on average 1.096774193548387) internal successors, (34), 33 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 18 states have return successors, (20), 19 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-25 06:35:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2023-12-25 06:35:44,856 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 90 [2023-12-25 06:35:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:35:44,857 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2023-12-25 06:35:44,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 71 states have internal predecessors, (79), 20 states have call successors, (21), 18 states have call predecessors, (21), 32 states have return successors, (32), 31 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-25 06:35:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2023-12-25 06:35:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-25 06:35:44,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:35:44,858 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:35:44,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 06:35:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:35:45,065 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:35:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:35:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1786023707, now seen corresponding path program 16 times [2023-12-25 06:35:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:35:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874538783] [2023-12-25 06:35:45,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:35:45,066 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 [2023-12-25 06:35:45,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:35:45,067 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:35:45,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 06:35:45,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:35:45,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:35:45,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 155 conjunts are in the unsatisfiable core [2023-12-25 06:35:45,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:35:45,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:35:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-25 06:35:46,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:36:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:36:05,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:36:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874538783] [2023-12-25 06:36:05,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874538783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:36:05,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:36:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 69] total 91 [2023-12-25 06:36:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506232976] [2023-12-25 06:36:05,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:36:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-12-25 06:36:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:36:05,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-12-25 06:36:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=7850, Unknown=0, NotChecked=0, Total=8372 [2023-12-25 06:36:05,177 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 92 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 20 states have call successors, (21), 19 states have call predecessors, (21), 34 states have return successors, (34), 33 states have call predecessors, (34), 19 states have call successors, (34) [2023-12-25 06:36:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:36:12,357 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2023-12-25 06:36:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 06:36:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 20 states have call successors, (21), 19 states have call predecessors, (21), 34 states have return successors, (34), 33 states have call predecessors, (34), 19 states have call successors, (34) Word has length 95 [2023-12-25 06:36:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:36:12,358 INFO L225 Difference]: With dead ends: 75 [2023-12-25 06:36:12,358 INFO L226 Difference]: Without dead ends: 58 [2023-12-25 06:36:12,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1067, Invalid=10705, Unknown=0, NotChecked=0, Total=11772 [2023-12-25 06:36:12,360 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 308 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:36:12,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 853 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 06:36:12,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-25 06:36:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-25 06:36:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.09375) internal successors, (35), 34 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 19 states have return successors, (21), 20 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-25 06:36:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2023-12-25 06:36:12,364 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 95 [2023-12-25 06:36:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:36:12,364 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2023-12-25 06:36:12,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 20 states have call successors, (21), 19 states have call predecessors, (21), 34 states have return successors, (34), 33 states have call predecessors, (34), 19 states have call successors, (34) [2023-12-25 06:36:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2023-12-25 06:36:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 06:36:12,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:36:12,365 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:36:12,376 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 (18)] Ended with exit code 0 [2023-12-25 06:36:12,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:36:12,577 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:36:12,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:36:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1103511057, now seen corresponding path program 17 times [2023-12-25 06:36:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:36:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929035394] [2023-12-25 06:36:12,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:36:12,577 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 [2023-12-25 06:36:12,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:36:12,579 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:36:12,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 06:36:13,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-25 06:36:13,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:36:13,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 168 conjunts are in the unsatisfiable core [2023-12-25 06:36:13,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:36:13,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:36:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 60 proven. 323 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-25 06:36:14,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:36:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:36:41,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:36:41,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929035394] [2023-12-25 06:36:41,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929035394] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:36:41,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:36:41,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 73] total 98 [2023-12-25 06:36:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368620703] [2023-12-25 06:36:41,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:36:41,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-25 06:36:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:36:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-25 06:36:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=8946, Unknown=0, NotChecked=0, Total=9702 [2023-12-25 06:36:41,400 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 99 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 79 states have internal predecessors, (87), 22 states have call successors, (23), 20 states have call predecessors, (23), 36 states have return successors, (36), 35 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-25 06:36:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:36:57,941 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2023-12-25 06:36:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 06:36:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 79 states have internal predecessors, (87), 22 states have call successors, (23), 20 states have call predecessors, (23), 36 states have return successors, (36), 35 states have call predecessors, (36), 21 states have call successors, (36) Word has length 100 [2023-12-25 06:36:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:36:57,942 INFO L225 Difference]: With dead ends: 82 [2023-12-25 06:36:57,942 INFO L226 Difference]: Without dead ends: 65 [2023-12-25 06:36:57,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3093 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=1826, Invalid=12216, Unknown=0, NotChecked=0, Total=14042 [2023-12-25 06:36:57,944 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 664 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:36:57,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 736 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-25 06:36:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-25 06:36:57,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2023-12-25 06:36:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 20 states have return successors, (22), 21 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-25 06:36:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2023-12-25 06:36:57,948 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 100 [2023-12-25 06:36:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:36:57,948 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2023-12-25 06:36:57,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 79 states have internal predecessors, (87), 22 states have call successors, (23), 20 states have call predecessors, (23), 36 states have return successors, (36), 35 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-25 06:36:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2023-12-25 06:36:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-25 06:36:57,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:36:57,950 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:36:57,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 06:36:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:36:58,157 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:36:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:36:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash 34570213, now seen corresponding path program 18 times [2023-12-25 06:36:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:36:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96445548] [2023-12-25 06:36:58,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:36:58,157 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 [2023-12-25 06:36:58,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:36:58,158 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:36:58,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 06:36:58,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-25 06:36:58,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:36:58,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 184 conjunts are in the unsatisfiable core [2023-12-25 06:36:58,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:36:58,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:37:00,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:37:00,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:37:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 34 proven. 360 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-12-25 06:37:00,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:37:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:37:28,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:37:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96445548] [2023-12-25 06:37:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96445548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:37:28,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:37:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 77] total 103 [2023-12-25 06:37:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222454775] [2023-12-25 06:37:28,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:37:28,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-25 06:37:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:37:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-25 06:37:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=816, Invalid=9896, Unknown=0, NotChecked=0, Total=10712 [2023-12-25 06:37:28,850 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 104 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 23 states have call successors, (24), 21 states have call predecessors, (24), 38 states have return successors, (38), 37 states have call predecessors, (38), 22 states have call successors, (38) [2023-12-25 06:37:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:37:47,409 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2023-12-25 06:37:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:37:47,409 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 23 states have call successors, (24), 21 states have call predecessors, (24), 38 states have return successors, (38), 37 states have call predecessors, (38), 22 states have call successors, (38) Word has length 105 [2023-12-25 06:37:47,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:37:47,410 INFO L225 Difference]: With dead ends: 84 [2023-12-25 06:37:47,410 INFO L226 Difference]: Without dead ends: 67 [2023-12-25 06:37:47,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3407 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=2002, Invalid=13498, Unknown=0, NotChecked=0, Total=15500 [2023-12-25 06:37:47,411 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 791 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:37:47,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 753 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 06:37:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-25 06:37:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2023-12-25 06:37:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.088235294117647) internal successors, (37), 36 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 21 states have return successors, (23), 22 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-25 06:37:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2023-12-25 06:37:47,415 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 105 [2023-12-25 06:37:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:37:47,416 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2023-12-25 06:37:47,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 23 states have call successors, (24), 21 states have call predecessors, (24), 38 states have return successors, (38), 37 states have call predecessors, (38), 22 states have call successors, (38) [2023-12-25 06:37:47,416 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2023-12-25 06:37:47,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 06:37:47,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:37:47,417 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:37:47,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 06:37:47,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:37:47,627 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:37:47,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:37:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash -761893511, now seen corresponding path program 19 times [2023-12-25 06:37:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:37:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56298720] [2023-12-25 06:37:47,628 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:37:47,628 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 [2023-12-25 06:37:47,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:37:47,629 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:37:47,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 06:37:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:37:48,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 182 conjunts are in the unsatisfiable core [2023-12-25 06:37:48,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:37:48,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:37:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 399 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-12-25 06:37:49,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:38:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:38:15,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:38:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56298720] [2023-12-25 06:38:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56298720] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:38:15,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:38:15,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 81] total 106 [2023-12-25 06:38:15,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803355582] [2023-12-25 06:38:15,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:38:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-12-25 06:38:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:38:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-12-25 06:38:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=10700, Unknown=0, NotChecked=0, Total=11342 [2023-12-25 06:38:15,072 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 107 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 85 states have internal predecessors, (93), 23 states have call successors, (24), 22 states have call predecessors, (24), 40 states have return successors, (40), 39 states have call predecessors, (40), 22 states have call successors, (40) [2023-12-25 06:38:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:38:25,449 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2023-12-25 06:38:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 06:38:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 85 states have internal predecessors, (93), 23 states have call successors, (24), 22 states have call predecessors, (24), 40 states have return successors, (40), 39 states have call predecessors, (40), 22 states have call successors, (40) Word has length 110 [2023-12-25 06:38:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:38:25,451 INFO L225 Difference]: With dead ends: 81 [2023-12-25 06:38:25,451 INFO L226 Difference]: Without dead ends: 64 [2023-12-25 06:38:25,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3493 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=1373, Invalid=14629, Unknown=0, NotChecked=0, Total=16002 [2023-12-25 06:38:25,452 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 491 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:38:25,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1184 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 06:38:25,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-25 06:38:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-25 06:38:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 6 states have call successors, (6), 3 states have call predecessors, (6), 22 states have return successors, (24), 23 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-25 06:38:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2023-12-25 06:38:25,456 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 110 [2023-12-25 06:38:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:38:25,456 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2023-12-25 06:38:25,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 85 states have internal predecessors, (93), 23 states have call successors, (24), 22 states have call predecessors, (24), 40 states have return successors, (40), 39 states have call predecessors, (40), 22 states have call successors, (40) [2023-12-25 06:38:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2023-12-25 06:38:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-25 06:38:25,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:38:25,457 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:38:25,464 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 (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:38:25,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:38:25,660 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:38:25,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:38:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash -698485841, now seen corresponding path program 20 times [2023-12-25 06:38:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:38:25,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160786127] [2023-12-25 06:38:25,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:38:25,661 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 [2023-12-25 06:38:25,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:38:25,662 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-25 06:38:25,663 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 (22)] Waiting until timeout for monitored process [2023-12-25 06:38:26,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:38:26,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:38:26,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 200 conjunts are in the unsatisfiable core [2023-12-25 06:38:26,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:38:26,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:38:27,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:38:27,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:38:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-25 06:38:27,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:38:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:38:55,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:38:55,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160786127] [2023-12-25 06:38:55,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160786127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:38:55,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:38:55,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 85] total 111 [2023-12-25 06:38:55,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729293175] [2023-12-25 06:38:55,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:38:55,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-12-25 06:38:55,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:38:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-12-25 06:38:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=684, Invalid=11748, Unknown=0, NotChecked=0, Total=12432 [2023-12-25 06:38:55,998 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 112 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 89 states have internal predecessors, (97), 24 states have call successors, (25), 23 states have call predecessors, (25), 42 states have return successors, (42), 41 states have call predecessors, (42), 23 states have call successors, (42) [2023-12-25 06:39:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:39:07,697 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2023-12-25 06:39:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 06:39:07,698 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 89 states have internal predecessors, (97), 24 states have call successors, (25), 23 states have call predecessors, (25), 42 states have return successors, (42), 41 states have call predecessors, (42), 23 states have call successors, (42) Word has length 115 [2023-12-25 06:39:07,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:39:07,699 INFO L225 Difference]: With dead ends: 83 [2023-12-25 06:39:07,699 INFO L226 Difference]: Without dead ends: 66 [2023-12-25 06:39:07,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3836 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=1483, Invalid=16073, Unknown=0, NotChecked=0, Total=17556 [2023-12-25 06:39:07,700 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 463 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:39:07,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1258 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-25 06:39:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-25 06:39:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-25 06:39:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 38 states have internal predecessors, (39), 6 states have call successors, (6), 3 states have call predecessors, (6), 23 states have return successors, (25), 24 states have call predecessors, (25), 4 states have call successors, (25) [2023-12-25 06:39:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2023-12-25 06:39:07,704 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 115 [2023-12-25 06:39:07,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:39:07,705 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2023-12-25 06:39:07,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 89 states have internal predecessors, (97), 24 states have call successors, (25), 23 states have call predecessors, (25), 42 states have return successors, (42), 41 states have call predecessors, (42), 23 states have call successors, (42) [2023-12-25 06:39:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2023-12-25 06:39:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-25 06:39:07,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:39:07,706 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:39:07,715 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 (22)] Forceful destruction successful, exit code 0 [2023-12-25 06:39:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-25 06:39:07,912 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:39:07,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:39:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash 453790723, now seen corresponding path program 21 times [2023-12-25 06:39:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:39:07,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995008994] [2023-12-25 06:39:07,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:39:07,914 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 [2023-12-25 06:39:07,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:39:07,915 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-25 06:39:07,916 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 (23)] Waiting until timeout for monitored process [2023-12-25 06:39:08,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-25 06:39:08,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:39:08,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 211 conjunts are in the unsatisfiable core [2023-12-25 06:39:09,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:39:09,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:39:11,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:39:11,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:39:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 40 proven. 483 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2023-12-25 06:39:11,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:39:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:39:49,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:39:49,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995008994] [2023-12-25 06:39:49,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995008994] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:39:49,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:39:49,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 89] total 118 [2023-12-25 06:39:49,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249033871] [2023-12-25 06:39:49,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:39:49,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-12-25 06:39:49,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:39:49,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-12-25 06:39:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1008, Invalid=13034, Unknown=0, NotChecked=0, Total=14042 [2023-12-25 06:39:49,011 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 119 states, 94 states have (on average 1.0957446808510638) internal successors, (103), 95 states have internal predecessors, (103), 26 states have call successors, (27), 24 states have call predecessors, (27), 44 states have return successors, (44), 43 states have call predecessors, (44), 25 states have call successors, (44) [2023-12-25 06:40:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:40:15,854 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2023-12-25 06:40:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 06:40:15,856 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 94 states have (on average 1.0957446808510638) internal successors, (103), 95 states have internal predecessors, (103), 26 states have call successors, (27), 24 states have call predecessors, (27), 44 states have return successors, (44), 43 states have call predecessors, (44), 25 states have call successors, (44) Word has length 120 [2023-12-25 06:40:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:40:15,857 INFO L225 Difference]: With dead ends: 90 [2023-12-25 06:40:15,857 INFO L226 Difference]: Without dead ends: 73 [2023-12-25 06:40:15,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4439 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=2578, Invalid=17728, Unknown=0, NotChecked=0, Total=20306 [2023-12-25 06:40:15,859 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1033 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:40:15,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1048 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-25 06:40:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-25 06:40:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2023-12-25 06:40:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 39 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 24 states have return successors, (26), 25 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-25 06:40:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-12-25 06:40:15,862 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 120 [2023-12-25 06:40:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:40:15,862 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-12-25 06:40:15,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 94 states have (on average 1.0957446808510638) internal successors, (103), 95 states have internal predecessors, (103), 26 states have call successors, (27), 24 states have call predecessors, (27), 44 states have return successors, (44), 43 states have call predecessors, (44), 25 states have call successors, (44) [2023-12-25 06:40:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-12-25 06:40:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-25 06:40:15,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:40:15,863 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:40:15,872 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 (23)] Forceful destruction successful, exit code 0 [2023-12-25 06:40:16,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-25 06:40:16,072 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:40:16,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:40:16,072 INFO L85 PathProgramCache]: Analyzing trace with hash -636458375, now seen corresponding path program 22 times [2023-12-25 06:40:16,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:40:16,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955052106] [2023-12-25 06:40:16,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:40:16,073 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 [2023-12-25 06:40:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:40:16,073 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-25 06:40:16,074 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 (24)] Waiting until timeout for monitored process [2023-12-25 06:40:16,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:40:16,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:40:16,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 209 conjunts are in the unsatisfiable core [2023-12-25 06:40:16,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:40:16,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:40:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-25 06:40:18,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:40:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:40:51,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:40:51,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955052106] [2023-12-25 06:40:51,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955052106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:40:51,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:40:51,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 93] total 121 [2023-12-25 06:40:51,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296593485] [2023-12-25 06:40:51,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:40:51,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2023-12-25 06:40:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:40:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2023-12-25 06:40:51,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=13991, Unknown=0, NotChecked=0, Total=14762 [2023-12-25 06:40:51,986 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 122 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 97 states have internal predecessors, (105), 26 states have call successors, (27), 25 states have call predecessors, (27), 46 states have return successors, (46), 45 states have call predecessors, (46), 25 states have call successors, (46) [2023-12-25 06:41:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:41:06,459 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2023-12-25 06:41:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-25 06:41:06,460 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 97 states have internal predecessors, (105), 26 states have call successors, (27), 25 states have call predecessors, (27), 46 states have return successors, (46), 45 states have call predecessors, (46), 25 states have call successors, (46) Word has length 125 [2023-12-25 06:41:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:41:06,460 INFO L225 Difference]: With dead ends: 87 [2023-12-25 06:41:06,460 INFO L226 Difference]: Without dead ends: 70 [2023-12-25 06:41:06,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4570 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=1715, Invalid=19165, Unknown=0, NotChecked=0, Total=20880 [2023-12-25 06:41:06,461 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 668 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 3220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:41:06,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1478 Invalid, 3220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-25 06:41:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-25 06:41:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-12-25 06:41:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 25 states have return successors, (27), 26 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-25 06:41:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2023-12-25 06:41:06,465 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 125 [2023-12-25 06:41:06,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:41:06,465 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2023-12-25 06:41:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 97 states have internal predecessors, (105), 26 states have call successors, (27), 25 states have call predecessors, (27), 46 states have return successors, (46), 45 states have call predecessors, (46), 25 states have call successors, (46) [2023-12-25 06:41:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2023-12-25 06:41:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 06:41:06,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:41:06,466 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:41:06,476 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 (24)] Forceful destruction successful, exit code 0 [2023-12-25 06:41:06,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-25 06:41:06,675 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:41:06,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:41:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1377837683, now seen corresponding path program 23 times [2023-12-25 06:41:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:41:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058493224] [2023-12-25 06:41:06,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:41:06,676 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 [2023-12-25 06:41:06,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:41:06,677 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-25 06:41:06,678 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 (25)] Waiting until timeout for monitored process [2023-12-25 06:41:07,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-25 06:41:07,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:41:07,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 234 conjunts are in the unsatisfiable core [2023-12-25 06:41:07,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:41:07,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:41:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 240 proven. 575 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2023-12-25 06:41:10,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:41:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:41:56,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:41:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058493224] [2023-12-25 06:41:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058493224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:41:56,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:41:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 97] total 128 [2023-12-25 06:41:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103171034] [2023-12-25 06:41:56,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:41:56,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-25 06:41:56,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:41:56,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-25 06:41:56,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=15366, Unknown=0, NotChecked=0, Total=16512 [2023-12-25 06:41:56,706 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 129 states, 102 states have (on average 1.088235294117647) internal successors, (111), 103 states have internal predecessors, (111), 28 states have call successors, (29), 26 states have call predecessors, (29), 48 states have return successors, (48), 47 states have call predecessors, (48), 27 states have call successors, (48) [2023-12-25 06:42:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:32,577 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2023-12-25 06:42:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-25 06:42:32,578 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 102 states have (on average 1.088235294117647) internal successors, (111), 103 states have internal predecessors, (111), 28 states have call successors, (29), 26 states have call predecessors, (29), 48 states have return successors, (48), 47 states have call predecessors, (48), 27 states have call successors, (48) Word has length 130 [2023-12-25 06:42:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:32,579 INFO L225 Difference]: With dead ends: 94 [2023-12-25 06:42:32,579 INFO L226 Difference]: Without dead ends: 77 [2023-12-25 06:42:32,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5202 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=3002, Invalid=20868, Unknown=0, NotChecked=0, Total=23870 [2023-12-25 06:42:32,581 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1156 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:32,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1325 Invalid, 3975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-25 06:42:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-25 06:42:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2023-12-25 06:42:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 41 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 26 states have return successors, (28), 27 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-25 06:42:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2023-12-25 06:42:32,585 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 130 [2023-12-25 06:42:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:32,586 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2023-12-25 06:42:32,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 102 states have (on average 1.088235294117647) internal successors, (111), 103 states have internal predecessors, (111), 28 states have call successors, (29), 26 states have call predecessors, (29), 48 states have return successors, (48), 47 states have call predecessors, (48), 27 states have call successors, (48) [2023-12-25 06:42:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2023-12-25 06:42:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 06:42:32,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:32,587 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:32,596 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 (25)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:32,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-25 06:42:32,797 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:32,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:32,798 INFO L85 PathProgramCache]: Analyzing trace with hash 118973507, now seen corresponding path program 24 times [2023-12-25 06:42:32,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:32,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113424702] [2023-12-25 06:42:32,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:42:32,798 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 [2023-12-25 06:42:32,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:32,799 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-25 06:42:32,800 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 (26)] Waiting until timeout for monitored process [2023-12-25 06:42:34,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-25 06:42:34,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:34,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 239 conjunts are in the unsatisfiable core [2023-12-25 06:42:34,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:34,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:36,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:42:36,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:42:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 46 proven. 624 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2023-12-25 06:42:36,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:43:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:43:26,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:43:26,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113424702] [2023-12-25 06:43:26,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113424702] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:43:26,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:43:26,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 105] total 137 [2023-12-25 06:43:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152513272] [2023-12-25 06:43:26,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:43:26,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2023-12-25 06:43:26,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:43:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2023-12-25 06:43:26,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=17679, Unknown=0, NotChecked=0, Total=18906 [2023-12-25 06:43:26,639 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 138 states, 109 states have (on average 1.091743119266055) internal successors, (119), 110 states have internal predecessors, (119), 30 states have call successors, (31), 28 states have call predecessors, (31), 50 states have return successors, (50), 49 states have call predecessors, (50), 28 states have call successors, (50) [2023-12-25 06:44:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:44:04,641 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2023-12-25 06:44:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-25 06:44:04,641 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 109 states have (on average 1.091743119266055) internal successors, (119), 110 states have internal predecessors, (119), 30 states have call successors, (31), 28 states have call predecessors, (31), 50 states have return successors, (50), 49 states have call predecessors, (50), 28 states have call successors, (50) Word has length 135 [2023-12-25 06:44:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:44:04,642 INFO L225 Difference]: With dead ends: 96 [2023-12-25 06:44:04,642 INFO L226 Difference]: Without dead ends: 79 [2023-12-25 06:44:04,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5630 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=3235, Invalid=23825, Unknown=0, NotChecked=0, Total=27060 [2023-12-25 06:44:04,644 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1270 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 4055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:44:04,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1333 Invalid, 4055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1209 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-25 06:44:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-25 06:44:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2023-12-25 06:44:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 40 states have (on average 1.075) internal successors, (43), 42 states have internal predecessors, (43), 6 states have call successors, (6), 3 states have call predecessors, (6), 27 states have return successors, (29), 28 states have call predecessors, (29), 4 states have call successors, (29) [2023-12-25 06:44:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2023-12-25 06:44:04,651 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 135 [2023-12-25 06:44:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:44:04,651 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2023-12-25 06:44:04,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 109 states have (on average 1.091743119266055) internal successors, (119), 110 states have internal predecessors, (119), 30 states have call successors, (31), 28 states have call predecessors, (31), 50 states have return successors, (50), 49 states have call predecessors, (50), 28 states have call successors, (50) [2023-12-25 06:44:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2023-12-25 06:44:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-25 06:44:04,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:44:04,652 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:44:04,664 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 (26)] Forceful destruction successful, exit code 0 [2023-12-25 06:44:04,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-25 06:44:04,862 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:44:04,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:44:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1200988695, now seen corresponding path program 25 times [2023-12-25 06:44:04,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:44:04,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621789483] [2023-12-25 06:44:04,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:44:04,862 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 [2023-12-25 06:44:04,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:44:04,863 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-25 06:44:04,864 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 (27)] Waiting until timeout for monitored process [2023-12-25 06:44:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:44:05,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 236 conjunts are in the unsatisfiable core [2023-12-25 06:44:05,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:44:05,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:44:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2023-12-25 06:44:08,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:44:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:44:50,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:44:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621789483] [2023-12-25 06:44:50,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621789483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:44:50,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:44:50,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 105] total 136 [2023-12-25 06:44:50,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599371555] [2023-12-25 06:44:50,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:44:50,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2023-12-25 06:44:50,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:44:50,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2023-12-25 06:44:50,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=17723, Unknown=0, NotChecked=0, Total=18632 [2023-12-25 06:44:50,973 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 137 states, 109 states have (on average 1.073394495412844) internal successors, (117), 109 states have internal predecessors, (117), 29 states have call successors, (30), 28 states have call predecessors, (30), 52 states have return successors, (52), 51 states have call predecessors, (52), 28 states have call successors, (52) [2023-12-25 06:45:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:45:10,319 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2023-12-25 06:45:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 06:45:10,319 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 109 states have (on average 1.073394495412844) internal successors, (117), 109 states have internal predecessors, (117), 29 states have call successors, (30), 28 states have call predecessors, (30), 52 states have return successors, (52), 51 states have call predecessors, (52), 28 states have call successors, (52) Word has length 140 [2023-12-25 06:45:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:45:10,320 INFO L225 Difference]: With dead ends: 93 [2023-12-25 06:45:10,320 INFO L226 Difference]: Without dead ends: 76 [2023-12-25 06:45:10,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5791 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=2093, Invalid=24313, Unknown=0, NotChecked=0, Total=26406 [2023-12-25 06:45:10,321 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 644 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 4022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:45:10,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1919 Invalid, 4022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-25 06:45:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-25 06:45:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-25 06:45:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 43 states have internal predecessors, (44), 6 states have call successors, (6), 3 states have call predecessors, (6), 28 states have return successors, (30), 29 states have call predecessors, (30), 4 states have call successors, (30) [2023-12-25 06:45:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2023-12-25 06:45:10,325 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 140 [2023-12-25 06:45:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:45:10,325 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2023-12-25 06:45:10,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 109 states have (on average 1.073394495412844) internal successors, (117), 109 states have internal predecessors, (117), 29 states have call successors, (30), 28 states have call predecessors, (30), 52 states have return successors, (52), 51 states have call predecessors, (52), 28 states have call successors, (52) [2023-12-25 06:45:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2023-12-25 06:45:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-25 06:45:10,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:45:10,326 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:45:10,334 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 (27)] Forceful destruction successful, exit code 0 [2023-12-25 06:45:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-25 06:45:10,532 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:45:10,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:45:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1587765517, now seen corresponding path program 26 times [2023-12-25 06:45:10,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:45:10,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98814857] [2023-12-25 06:45:10,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:45:10,533 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 [2023-12-25 06:45:10,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:45:10,534 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-25 06:45:10,535 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 (28)] Waiting until timeout for monitored process [2023-12-25 06:45:11,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:45:11,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:45:11,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 254 conjunts are in the unsatisfiable core [2023-12-25 06:45:11,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:45:11,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:45:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:45:14,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:45:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 728 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2023-12-25 06:45:14,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:46:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:46:00,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:46:00,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98814857] [2023-12-25 06:46:00,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98814857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:46:00,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:46:00,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 109] total 141 [2023-12-25 06:46:00,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114985217] [2023-12-25 06:46:00,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:46:00,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2023-12-25 06:46:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:46:00,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2023-12-25 06:46:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=19065, Unknown=0, NotChecked=0, Total=20022 [2023-12-25 06:46:00,224 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 142 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 113 states have internal predecessors, (121), 30 states have call successors, (31), 29 states have call predecessors, (31), 54 states have return successors, (54), 53 states have call predecessors, (54), 29 states have call successors, (54) [2023-12-25 06:46:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:46:22,398 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2023-12-25 06:46:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-25 06:46:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 113 states have internal predecessors, (121), 30 states have call successors, (31), 29 states have call predecessors, (31), 54 states have return successors, (54), 53 states have call predecessors, (54), 29 states have call successors, (54) Word has length 145 [2023-12-25 06:46:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:46:22,399 INFO L225 Difference]: With dead ends: 95 [2023-12-25 06:46:22,399 INFO L226 Difference]: Without dead ends: 78 [2023-12-25 06:46:22,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6230 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=2227, Invalid=26165, Unknown=0, NotChecked=0, Total=28392 [2023-12-25 06:46:22,401 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 970 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:46:22,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2103 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 06:46:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-25 06:46:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-25 06:46:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 44 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 29 states have return successors, (31), 30 states have call predecessors, (31), 4 states have call successors, (31) [2023-12-25 06:46:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-12-25 06:46:22,405 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 145 [2023-12-25 06:46:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:46:22,405 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-12-25 06:46:22,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 113 states have internal predecessors, (121), 30 states have call successors, (31), 29 states have call predecessors, (31), 54 states have return successors, (54), 53 states have call predecessors, (54), 29 states have call successors, (54) [2023-12-25 06:46:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-12-25 06:46:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-25 06:46:22,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:46:22,406 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:46:22,416 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 (28)] Forceful destruction successful, exit code 0 [2023-12-25 06:46:22,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-25 06:46:22,616 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:46:22,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:46:22,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1963845215, now seen corresponding path program 27 times [2023-12-25 06:46:22,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:46:22,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64393975] [2023-12-25 06:46:22,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:46:22,618 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 [2023-12-25 06:46:22,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:46:22,618 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-25 06:46:22,620 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 (29)] Waiting until timeout for monitored process [2023-12-25 06:46:24,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2023-12-25 06:46:24,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:46:24,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 265 conjunts are in the unsatisfiable core [2023-12-25 06:46:24,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:46:24,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:46:27,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:46:27,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-25 06:46:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 52 proven. 783 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2023-12-25 06:46:27,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-25 06:46:28,786 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 (29)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:46:28,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:46:28,804 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 (29)] Forceful destruction successful, exit code 0 [2023-12-25 06:46:28,821 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 [2023-12-25 06:46:28,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-25 06:46:28,999 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 151 with TraceHistMax 28,while TraceCheckSpWp was constructing backward predicates,while TransFormulaUtils was doing sequential composition of 4 TransFormulas,while SimplifyDDA2 was simplifying a ∧-13-1 term,while SimplifyDDA2 was simplifying 13 xjuncts wrt. a ATOM-1 context. [2023-12-25 06:46:29,004 INFO L445 BasicCegarLoop]: Path program histogram: [27, 1] [2023-12-25 06:46:29,006 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:46:29,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:46:29 BoogieIcfgContainer [2023-12-25 06:46:29,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:46:29,009 INFO L158 Benchmark]: Toolchain (without parser) took 830857.77ms. Allocated memory was 196.1MB in the beginning and 330.3MB in the end (delta: 134.2MB). Free memory was 149.7MB in the beginning and 174.9MB in the end (delta: -25.2MB). Peak memory consumption was 241.6MB. Max. memory is 8.0GB. [2023-12-25 06:46:29,009 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 196.1MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:46:29,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.65ms. Allocated memory is still 196.1MB. Free memory was 149.4MB in the beginning and 137.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:46:29,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.35ms. Allocated memory is still 196.1MB. Free memory was 137.8MB in the beginning and 136.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:46:29,009 INFO L158 Benchmark]: Boogie Preprocessor took 44.64ms. Allocated memory is still 196.1MB. Free memory was 136.4MB in the beginning and 134.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:46:29,009 INFO L158 Benchmark]: RCFGBuilder took 327.71ms. Allocated memory is still 196.1MB. Free memory was 134.3MB in the beginning and 120.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-25 06:46:29,010 INFO L158 Benchmark]: TraceAbstraction took 830206.66ms. Allocated memory was 196.1MB in the beginning and 330.3MB in the end (delta: 134.2MB). Free memory was 119.3MB in the beginning and 174.9MB in the end (delta: -55.6MB). Peak memory consumption was 211.2MB. Max. memory is 8.0GB. [2023-12-25 06:46:29,010 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 196.1MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 237.65ms. Allocated memory is still 196.1MB. Free memory was 149.4MB in the beginning and 137.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.35ms. Allocated memory is still 196.1MB. Free memory was 137.8MB in the beginning and 136.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.64ms. Allocated memory is still 196.1MB. Free memory was 136.4MB in the beginning and 134.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 327.71ms. Allocated memory is still 196.1MB. Free memory was 134.3MB in the beginning and 120.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 830206.66ms. Allocated memory was 196.1MB in the beginning and 330.3MB in the end (delta: 134.2MB). Free memory was 119.3MB in the beginning and 174.9MB in the end (delta: -55.6MB). Peak memory consumption was 211.2MB. 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: 38]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 38). Cancelled while NwaCegarLoop was analyzing trace of length 151 with TraceHistMax 28,while TraceCheckSpWp was constructing backward predicates,while TransFormulaUtils was doing sequential composition of 4 TransFormulas,while SimplifyDDA2 was simplifying a ∧-13-1 term,while SimplifyDDA2 was simplifying 13 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 830.2s, OverallIterations: 28, TraceHistogramMax: 28, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.0s, AutomataDifference: 276.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11334 SdHoareTripleChecker+Valid, 65.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11280 mSDsluCounter, 18754 SdHoareTripleChecker+Invalid, 59.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18127 mSDsCounter, 10038 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40453 IncrementalHoareTripleChecker+Invalid, 50491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10038 mSolverCounterUnsat, 627 mSDtfsCounter, 40453 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4654 GetRequests, 2205 SyntacticMatches, 0 SemanticMatches, 2449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63304 ImplicationChecksByTransitivity, 388.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=27, InterpolantAutomatonStates: 575, 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, 27 MinimizatonAttempts, 60 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 529.0s InterpolantComputationTime, 2160 NumberOfCodeBlocks, 2160 NumberOfCodeBlocksAsserted, 196 NumberOfCheckSat, 4252 ConstructedInterpolants, 0 QuantifiedInterpolants, 78657 SizeOfPredicates, 804 NumberOfNonLiveVariables, 9558 ConjunctsInSsa, 3607 ConjunctsInUnsatCore, 53 InterpolantComputations, 1 PerfectInterpolantSequences, 9126/32058 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