/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/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:27:55,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:27:55,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:27:55,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:27:55,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:27:55,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:27:55,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:27:55,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:27:55,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:27:55,826 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:27:55,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:27:55,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:27:55,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:27:55,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:27:55,828 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:27:55,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:27:55,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:27:55,828 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:27:55,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:27:55,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:27:55,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:27:55,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:27:55,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:27:55,830 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:27:55,830 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:27:55,830 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:27:55,831 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:27:55,831 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:27:55,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:27:55,831 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:27:55,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:27:55,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:27:55,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:27:55,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:27:55,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:27:55,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:27:55,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:27:55,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:27:55,833 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:27:55,833 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:27:55,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:27:55,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:27:55,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:27:55,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:27:55,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:27:55,834 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:27:55,834 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:27:55,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:27:56,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:27:56,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:27:56,015 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:27:56,015 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:27:56,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-12-16 16:27:57,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:27:57,260 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:27:57,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-12-16 16:27:57,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea44f843/fb3cb76bf5724f83ba0aaf35adceda70/FLAGe75a3666d [2023-12-16 16:27:57,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea44f843/fb3cb76bf5724f83ba0aaf35adceda70 [2023-12-16 16:27:57,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:27:57,284 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:27:57,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:27:57,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:27:57,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:27:57,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8796e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57, skipping insertion in model container [2023-12-16 16:27:57,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,310 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:27:57,408 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-12-16 16:27:57,413 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-12-16 16:27:57,416 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-12-16 16:27:57,418 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-12-16 16:27:57,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:27:57,428 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:27:57,438 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-12-16 16:27:57,441 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-12-16 16:27:57,442 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-12-16 16:27:57,444 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-12-16 16:27:57,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:27:57,454 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:27:57,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57 WrapperNode [2023-12-16 16:27:57,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:27:57,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:27:57,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:27:57,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:27:57,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,493 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2023-12-16 16:27:57,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:27:57,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:27:57,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:27:57,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:27:57,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,523 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-16 16:27:57,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:27:57,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:27:57,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:27:57,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:27:57,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (1/1) ... [2023-12-16 16:27:57,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:27:57,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:27:57,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:27:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:27:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:27:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 16:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 16:27:57,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:27:57,721 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:27:57,722 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:27:57,932 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:27:57,952 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:27:57,952 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 16:27:57,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:27:57 BoogieIcfgContainer [2023-12-16 16:27:57,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:27:57,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:27:57,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:27:57,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:27:57,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:27:57" (1/3) ... [2023-12-16 16:27:57,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27519f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:27:57, skipping insertion in model container [2023-12-16 16:27:57,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:27:57" (2/3) ... [2023-12-16 16:27:57,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27519f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:27:57, skipping insertion in model container [2023-12-16 16:27:57,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:27:57" (3/3) ... [2023-12-16 16:27:57,958 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2023-12-16 16:27:57,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:27:57,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-16 16:27:58,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:27:58,010 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;@1b53b17c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:27:58,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-16 16:27:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 32 states have (on average 1.71875) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 16:27:58,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:27:58,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:27:58,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:27:58,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:27:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash -622544545, now seen corresponding path program 1 times [2023-12-16 16:27:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:27:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379839749] [2023-12-16 16:27:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:27:58,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:58,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:27:58,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:27:58,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:27:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:27:58,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:27:58,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:27:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:27:58,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:27:58,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:27:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379839749] [2023-12-16 16:27:58,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379839749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:27:58,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:27:58,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:27:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786989401] [2023-12-16 16:27:58,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:27:58,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:27:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:27:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:27:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:27:58,210 INFO L87 Difference]: Start difference. First operand has 37 states, 32 states have (on average 1.71875) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:27:58,239 INFO L93 Difference]: Finished difference Result 73 states and 109 transitions. [2023-12-16 16:27:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:27:58,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 16:27:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:27:58,245 INFO L225 Difference]: With dead ends: 73 [2023-12-16 16:27:58,245 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 16:27:58,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:27:58,252 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:27:58,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:27:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 16:27:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-16 16:27:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-12-16 16:27:58,277 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 10 [2023-12-16 16:27:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:27:58,278 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-12-16 16:27:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-12-16 16:27:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 16:27:58,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:27:58,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:27:58,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 16:27:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:58,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:27:58,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:27:58,480 INFO L85 PathProgramCache]: Analyzing trace with hash -175439648, now seen corresponding path program 1 times [2023-12-16 16:27:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:27:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685248262] [2023-12-16 16:27:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:27:58,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:58,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:27:58,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:27:58,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:27:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:27:58,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 16:27:58,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:27:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:27:58,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:27:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:27:58,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:27:58,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685248262] [2023-12-16 16:27:58,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685248262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:27:58,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:27:58,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 16:27:58,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752235510] [2023-12-16 16:27:58,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:27:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:27:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:27:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:27:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:27:58,582 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:27:58,624 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2023-12-16 16:27:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:27:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-16 16:27:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:27:58,626 INFO L225 Difference]: With dead ends: 70 [2023-12-16 16:27:58,626 INFO L226 Difference]: Without dead ends: 38 [2023-12-16 16:27:58,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:27:58,629 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:27:58,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:27:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-16 16:27:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-16 16:27:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-12-16 16:27:58,639 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 11 [2023-12-16 16:27:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:27:58,640 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-12-16 16:27:58,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-12-16 16:27:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 16:27:58,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:27:58,641 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:27:58,643 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 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:27:58,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:58,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:27:58,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:27:58,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1979388319, now seen corresponding path program 2 times [2023-12-16 16:27:58,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:27:58,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142593471] [2023-12-16 16:27:58,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:27:58,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:58,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:27:58,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:27:58,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:27:58,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:27:58,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:27:58,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:27:58,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:27:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 16:27:58,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:27:58,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:27:58,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142593471] [2023-12-16 16:27:58,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142593471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:27:58,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:27:58,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:27:58,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804678038] [2023-12-16 16:27:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:27:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:27:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:27:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:27:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:27:58,900 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:27:58,910 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-12-16 16:27:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:27:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 16:27:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:27:58,911 INFO L225 Difference]: With dead ends: 45 [2023-12-16 16:27:58,911 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 16:27:58,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:27:58,912 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:27:58,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 51 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:27:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 16:27:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-12-16 16:27:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.3) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-12-16 16:27:58,935 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 14 [2023-12-16 16:27:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:27:58,935 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-12-16 16:27:58,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:58,935 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-12-16 16:27:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 16:27:58,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:27:58,935 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:27:58,940 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 [2023-12-16 16:27:59,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:59,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:27:59,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:27:59,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1006571817, now seen corresponding path program 1 times [2023-12-16 16:27:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:27:59,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249945701] [2023-12-16 16:27:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:27:59,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:27:59,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:27:59,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:27:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:27:59,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:27:59,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:27:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:27:59,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:27:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:27:59,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:27:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249945701] [2023-12-16 16:27:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249945701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:27:59,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:27:59,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 16:27:59,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678362951] [2023-12-16 16:27:59,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:27:59,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:27:59,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:27:59,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:27:59,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:27:59,267 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:27:59,390 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2023-12-16 16:27:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:27:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-16 16:27:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:27:59,391 INFO L225 Difference]: With dead ends: 66 [2023-12-16 16:27:59,391 INFO L226 Difference]: Without dead ends: 39 [2023-12-16 16:27:59,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 16:27:59,392 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:27:59,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:27:59,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-16 16:27:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-16 16:27:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.25) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2023-12-16 16:27:59,397 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 15 [2023-12-16 16:27:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:27:59,397 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2023-12-16 16:27:59,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2023-12-16 16:27:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 16:27:59,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:27:59,398 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:27:59,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:27:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:59,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:27:59,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:27:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 768275063, now seen corresponding path program 2 times [2023-12-16 16:27:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:27:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780080492] [2023-12-16 16:27:59,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:27:59,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:59,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:27:59,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:27:59,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:27:59,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:27:59,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:27:59,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:27:59,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:27:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-16 16:27:59,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:27:59,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:27:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780080492] [2023-12-16 16:27:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780080492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:27:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:27:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:27:59,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465509854] [2023-12-16 16:27:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:27:59,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:27:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:27:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:27:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:27:59,671 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:27:59,702 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2023-12-16 16:27:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:27:59,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 16:27:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:27:59,703 INFO L225 Difference]: With dead ends: 67 [2023-12-16 16:27:59,703 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 16:27:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:27:59,704 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:27:59,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:27:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 16:27:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2023-12-16 16:27:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-12-16 16:27:59,709 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 21 [2023-12-16 16:27:59,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:27:59,709 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-12-16 16:27:59,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-12-16 16:27:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 16:27:59,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:27:59,710 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:27:59,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 16:27:59,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:59,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:27:59,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:27:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash 698832242, now seen corresponding path program 1 times [2023-12-16 16:27:59,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:27:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491957107] [2023-12-16 16:27:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:27:59,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:27:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:27:59,931 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:27:59,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:27:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:27:59,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:27:59,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:28:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:00,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:28:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:00,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:28:00,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491957107] [2023-12-16 16:28:00,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491957107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:28:00,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:28:00,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-16 16:28:00,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146421605] [2023-12-16 16:28:00,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:28:00,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 16:28:00,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:28:00,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 16:28:00,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:28:00,284 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:28:00,934 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2023-12-16 16:28:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 16:28:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 16:28:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:28:00,938 INFO L225 Difference]: With dead ends: 78 [2023-12-16 16:28:00,938 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 16:28:00,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 16:28:00,940 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:28:00,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:28:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 16:28:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-16 16:28:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2023-12-16 16:28:00,950 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 21 [2023-12-16 16:28:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:28:00,951 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2023-12-16 16:28:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2023-12-16 16:28:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 16:28:00,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:28:00,952 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:28:00,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:28:01,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:01,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:28:01,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:28:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash -62278478, now seen corresponding path program 2 times [2023-12-16 16:28:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:28:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260580495] [2023-12-16 16:28:01,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:28:01,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:01,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:28:01,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:28:01,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 16:28:01,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:28:01,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:28:01,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:28:01,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:28:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 16:28:01,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:28:01,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:28:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260580495] [2023-12-16 16:28:01,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260580495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:28:01,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:28:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:28:01,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066552221] [2023-12-16 16:28:01,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:28:01,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 16:28:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:28:01,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 16:28:01,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 16:28:01,229 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:28:01,254 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2023-12-16 16:28:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:28:01,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-16 16:28:01,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:28:01,255 INFO L225 Difference]: With dead ends: 72 [2023-12-16 16:28:01,255 INFO L226 Difference]: Without dead ends: 70 [2023-12-16 16:28:01,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:28:01,256 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:28:01,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 85 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:28:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-16 16:28:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 53. [2023-12-16 16:28:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.16) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2023-12-16 16:28:01,261 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 33 [2023-12-16 16:28:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:28:01,261 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2023-12-16 16:28:01,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2023-12-16 16:28:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 16:28:01,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:28:01,262 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:28:01,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 16:28:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:01,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:28:01,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:28:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1867717103, now seen corresponding path program 1 times [2023-12-16 16:28:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:28:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189329884] [2023-12-16 16:28:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:28:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:28:01,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:28:01,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 16:28:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:28:01,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 16:28:01,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:28:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:01,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:28:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:02,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:28:02,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189329884] [2023-12-16 16:28:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189329884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:28:02,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:28:02,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-16 16:28:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472814808] [2023-12-16 16:28:02,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:28:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 16:28:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:28:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 16:28:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 16:28:02,587 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:28:05,053 INFO L93 Difference]: Finished difference Result 106 states and 139 transitions. [2023-12-16 16:28:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 16:28:05,053 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 16:28:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:28:05,054 INFO L225 Difference]: With dead ends: 106 [2023-12-16 16:28:05,054 INFO L226 Difference]: Without dead ends: 77 [2023-12-16 16:28:05,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 16:28:05,056 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:28:05,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 782 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 16:28:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-16 16:28:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-16 16:28:05,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2023-12-16 16:28:05,062 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 34 [2023-12-16 16:28:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:28:05,062 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2023-12-16 16:28:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2023-12-16 16:28:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 16:28:05,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:28:05,063 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:28:05,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 16:28:05,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:05,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:28:05,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:28:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2119866257, now seen corresponding path program 2 times [2023-12-16 16:28:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:28:05,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864264357] [2023-12-16 16:28:05,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:28:05,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:05,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:28:05,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:28:05,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 16:28:05,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:28:05,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:28:05,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:28:05,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:28:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-16 16:28:05,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:28:05,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:28:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864264357] [2023-12-16 16:28:05,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864264357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:28:05,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:28:05,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:28:05,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867028742] [2023-12-16 16:28:05,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:28:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:28:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:28:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:28:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:28:05,360 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:28:05,388 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2023-12-16 16:28:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:28:05,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-16 16:28:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:28:05,390 INFO L225 Difference]: With dead ends: 99 [2023-12-16 16:28:05,390 INFO L226 Difference]: Without dead ends: 78 [2023-12-16 16:28:05,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:28:05,392 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:28:05,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:28:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-16 16:28:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2023-12-16 16:28:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2023-12-16 16:28:05,406 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 58 [2023-12-16 16:28:05,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:28:05,407 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2023-12-16 16:28:05,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2023-12-16 16:28:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 16:28:05,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:28:05,410 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:28:05,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 16:28:05,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:05,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:28:05,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:28:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash -20550510, now seen corresponding path program 1 times [2023-12-16 16:28:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:28:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374928719] [2023-12-16 16:28:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:28:05,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:05,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:28:05,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:28:05,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 16:28:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:28:05,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 16:28:05,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:28:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:06,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:28:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:09,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:28:09,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374928719] [2023-12-16 16:28:09,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374928719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:28:09,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:28:09,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-16 16:28:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147286777] [2023-12-16 16:28:09,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:28:09,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-16 16:28:09,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:28:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-16 16:28:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 16:28:09,568 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 96 states, 96 states have (on average 1.15625) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:25,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:28:25,176 INFO L93 Difference]: Finished difference Result 144 states and 199 transitions. [2023-12-16 16:28:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-16 16:28:25,176 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.15625) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 16:28:25,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:28:25,177 INFO L225 Difference]: With dead ends: 144 [2023-12-16 16:28:25,177 INFO L226 Difference]: Without dead ends: 120 [2023-12-16 16:28:25,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-16 16:28:25,181 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:28:25,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1250 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 16:28:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-16 16:28:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-16 16:28:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.0508474576271187) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2023-12-16 16:28:25,188 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 63 [2023-12-16 16:28:25,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:28:25,189 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2023-12-16 16:28:25,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.15625) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2023-12-16 16:28:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 16:28:25,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:28:25,190 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:28:25,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 16:28:25,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:25,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:28:25,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:28:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1175033454, now seen corresponding path program 2 times [2023-12-16 16:28:25,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:28:25,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575224545] [2023-12-16 16:28:25,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:28:25,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:25,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:28:25,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:28:25,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 16:28:25,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:28:25,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:28:25,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 16:28:25,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:28:25,993 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 16:28:26,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 16:28:26,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 16:28:26,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 16:28:26,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 26 [2023-12-16 16:28:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-16 16:28:26,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:28:26,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:28:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575224545] [2023-12-16 16:28:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575224545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:28:26,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:28:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 16:28:26,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193076049] [2023-12-16 16:28:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:28:26,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:28:26,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:28:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:28:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:28:26,052 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:28:26,289 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2023-12-16 16:28:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 16:28:26,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-16 16:28:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:28:26,291 INFO L225 Difference]: With dead ends: 136 [2023-12-16 16:28:26,291 INFO L226 Difference]: Without dead ends: 115 [2023-12-16 16:28:26,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:28:26,292 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:28:26,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 37 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:28:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-16 16:28:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2023-12-16 16:28:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2023-12-16 16:28:26,301 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 111 [2023-12-16 16:28:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:28:26,301 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2023-12-16 16:28:26,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:28:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2023-12-16 16:28:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 16:28:26,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:28:26,302 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:28:26,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 16:28:26,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:26,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-16 16:28:26,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:28:26,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1548217472, now seen corresponding path program 1 times [2023-12-16 16:28:26,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:28:26,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537090755] [2023-12-16 16:28:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:28:26,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:28:26,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:28:26,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:28:26,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 16:28:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:28:26,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-16 16:28:26,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:28:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:30,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:28:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:28:41,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:28:41,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537090755] [2023-12-16 16:28:41,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537090755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:28:41,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:28:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-16 16:28:41,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762641946] [2023-12-16 16:28:41,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:28:41,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-16 16:28:41,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:28:41,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-16 16:28:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-16 16:28:41,014 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 192 states, 192 states have (on average 1.0833333333333333) internal successors, (208), 191 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 16:29:15,061 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:29:15,061 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:29:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-16 16:29:15,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=12670, Invalid=30802, Unknown=0, NotChecked=0, Total=43472 [2023-12-16 16:29:15,070 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:29:15,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 9139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9138 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-16 16:29:15,071 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-16 16:29:15,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 16:29:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:29:15,277 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (113states) and FLOYD_HOARE automaton (currently 114 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 209 known predicates. [2023-12-16 16:29:15,278 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-16 16:29:15,278 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-12-16 16:29:15,278 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-16 16:29:15,283 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1] [2023-12-16 16:29:15,285 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:29:15,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:29:15 BoogieIcfgContainer [2023-12-16 16:29:15,287 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:29:15,288 INFO L158 Benchmark]: Toolchain (without parser) took 78004.08ms. Allocated memory was 207.6MB in the beginning and 351.3MB in the end (delta: 143.7MB). Free memory was 169.5MB in the beginning and 129.4MB in the end (delta: 40.0MB). Peak memory consumption was 184.7MB. Max. memory is 8.0GB. [2023-12-16 16:29:15,288 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 207.6MB. Free memory is still 164.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:29:15,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.65ms. Allocated memory is still 207.6MB. Free memory was 169.5MB in the beginning and 155.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 16:29:15,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.42ms. Allocated memory is still 207.6MB. Free memory was 155.8MB in the beginning and 154.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:29:15,292 INFO L158 Benchmark]: Boogie Preprocessor took 56.85ms. Allocated memory is still 207.6MB. Free memory was 154.3MB in the beginning and 151.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 16:29:15,292 INFO L158 Benchmark]: RCFGBuilder took 402.18ms. Allocated memory is still 207.6MB. Free memory was 151.7MB in the beginning and 134.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 16:29:15,292 INFO L158 Benchmark]: TraceAbstraction took 77333.09ms. Allocated memory was 207.6MB in the beginning and 351.3MB in the end (delta: 143.7MB). Free memory was 134.4MB in the beginning and 129.4MB in the end (delta: 4.9MB). Peak memory consumption was 150.1MB. Max. memory is 8.0GB. [2023-12-16 16:29:15,293 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 207.6MB. Free memory is still 164.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.65ms. Allocated memory is still 207.6MB. Free memory was 169.5MB in the beginning and 155.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.42ms. Allocated memory is still 207.6MB. Free memory was 155.8MB in the beginning and 154.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.85ms. Allocated memory is still 207.6MB. Free memory was 154.3MB in the beginning and 151.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 402.18ms. Allocated memory is still 207.6MB. Free memory was 151.7MB in the beginning and 134.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 77333.09ms. Allocated memory was 207.6MB in the beginning and 351.3MB in the end (delta: 143.7MB). Free memory was 134.4MB in the beginning and 129.4MB in the end (delta: 4.9MB). Peak memory consumption was 150.1MB. 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: 77]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 77). Cancelled while NwaCegarLoop was constructing difference of abstraction (113states) and FLOYD_HOARE automaton (currently 114 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 209 known predicates. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 46). Cancelled while NwaCegarLoop was constructing difference of abstraction (113states) and FLOYD_HOARE automaton (currently 114 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 209 known predicates. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 113). Cancelled while NwaCegarLoop was constructing difference of abstraction (113states) and FLOYD_HOARE automaton (currently 114 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 209 known predicates. - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 171). Cancelled while NwaCegarLoop was constructing difference of abstraction (113states) and FLOYD_HOARE automaton (currently 114 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 209 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 77.3s, OverallIterations: 12, TraceHistogramMax: 94, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 53.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 3160 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2821 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12518 IncrementalHoareTripleChecker+Invalid, 12533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 339 mSDtfsCounter, 12518 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 847 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 64.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=10, InterpolantAutomatonStates: 216, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 503 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 2258 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1373 ConjunctsInSsa, 215 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 5864/17594 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