/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/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:32:08,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:32:09,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 02:32:09,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:32:09,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:32:09,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:32:09,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:32:09,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:32:09,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:32:09,050 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:32:09,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:32:09,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:32:09,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:32:09,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:32:09,052 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:32:09,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:32:09,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:32:09,052 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:32:09,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:32:09,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:32:09,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:32:09,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:32:09,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:32:09,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:32:09,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:32:09,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:32:09,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:32:09,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:32:09,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:32:09,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:32:09,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:32:09,056 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:32:09,056 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:32:09,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:32:09,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:32:09,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:32:09,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:32:09,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:32:09,057 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:32:09,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:32:09,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:32:09,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:32:09,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:32:09,278 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:32:09,279 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:32:09,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c [2023-12-22 02:32:10,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:32:10,515 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:32:10,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c [2023-12-22 02:32:10,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/495d4daf5/53d91130a0be459ea0290181c5b20ef6/FLAG836ace14b [2023-12-22 02:32:10,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/495d4daf5/53d91130a0be459ea0290181c5b20ef6 [2023-12-22 02:32:10,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:32:10,541 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:32:10,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:32:10,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:32:10,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:32:10,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:10,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d091122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10, skipping insertion in model container [2023-12-22 02:32:10,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:10,593 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:32:10,687 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[913,926] [2023-12-22 02:32:10,720 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[5977,5990] [2023-12-22 02:32:10,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:32:10,861 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:32:10,868 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[913,926] [2023-12-22 02:32:10,878 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[5977,5990] [2023-12-22 02:32:10,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:32:10,952 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:32:10,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10 WrapperNode [2023-12-22 02:32:10,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:32:10,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:32:10,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:32:10,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:32:10,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:10,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,016 INFO L138 Inliner]: procedures = 71, calls = 82, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 989 [2023-12-22 02:32:11,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:32:11,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:32:11,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:32:11,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:32:11,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,061 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 02:32:11,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:32:11,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:32:11,114 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:32:11,114 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:32:11,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (1/1) ... [2023-12-22 02:32:11,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:32:11,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:32:11,148 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) [2023-12-22 02:32:11,168 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 [2023-12-22 02:32:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:32:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-22 02:32:11,174 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-22 02:32:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-22 02:32:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-22 02:32:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-22 02:32:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-22 02:32:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-22 02:32:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-22 02:32:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-22 02:32:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-22 02:32:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-22 02:32:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-22 02:32:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:32:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-22 02:32:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-22 02:32:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-22 02:32:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-22 02:32:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:32:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:32:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-22 02:32:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-22 02:32:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-22 02:32:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-22 02:32:11,303 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:32:11,305 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:32:11,961 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:32:12,011 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:32:12,011 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-12-22 02:32:12,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:32:12 BoogieIcfgContainer [2023-12-22 02:32:12,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:32:12,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:32:12,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:32:12,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:32:12,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:32:10" (1/3) ... [2023-12-22 02:32:12,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f32198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:32:12, skipping insertion in model container [2023-12-22 02:32:12,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:10" (2/3) ... [2023-12-22 02:32:12,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f32198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:32:12, skipping insertion in model container [2023-12-22 02:32:12,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:32:12" (3/3) ... [2023-12-22 02:32:12,017 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-1.c [2023-12-22 02:32:12,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:32:12,028 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:32:12,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:32:12,082 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;@7f5a1bf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:32:12,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:32:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 350 states have (on average 1.7257142857142858) internal successors, (604), 357 states have internal predecessors, (604), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-22 02:32:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-22 02:32:12,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:12,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:12,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:12,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash -462489640, now seen corresponding path program 1 times [2023-12-22 02:32:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:12,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314061666] [2023-12-22 02:32:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:12,110 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 [2023-12-22 02:32:12,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:12,112 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) [2023-12-22 02:32:12,117 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 [2023-12-22 02:32:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:12,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:12,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:12,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:12,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:12,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314061666] [2023-12-22 02:32:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314061666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:12,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:12,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017571236] [2023-12-22 02:32:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:12,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:12,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:12,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:12,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:12,315 INFO L87 Difference]: Start difference. First operand has 396 states, 350 states have (on average 1.7257142857142858) internal successors, (604), 357 states have internal predecessors, (604), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:32:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:12,505 INFO L93 Difference]: Finished difference Result 823 states and 1391 transitions. [2023-12-22 02:32:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:12,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-22 02:32:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:12,522 INFO L225 Difference]: With dead ends: 823 [2023-12-22 02:32:12,523 INFO L226 Difference]: Without dead ends: 443 [2023-12-22 02:32:12,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:12,531 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 605 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:12,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 658 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-12-22 02:32:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 439. [2023-12-22 02:32:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 390 states have (on average 1.5923076923076922) internal successors, (621), 394 states have internal predecessors, (621), 37 states have call successors, (37), 12 states have call predecessors, (37), 10 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2023-12-22 02:32:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 695 transitions. [2023-12-22 02:32:12,583 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 695 transitions. Word has length 37 [2023-12-22 02:32:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:12,583 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 695 transitions. [2023-12-22 02:32:12,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:32:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 695 transitions. [2023-12-22 02:32:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-22 02:32:12,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:12,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:12,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:12,790 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 [2023-12-22 02:32:12,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:12,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2026632148, now seen corresponding path program 1 times [2023-12-22 02:32:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:12,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087630006] [2023-12-22 02:32:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:12,792 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 [2023-12-22 02:32:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:12,793 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) [2023-12-22 02:32:12,822 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 [2023-12-22 02:32:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:12,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:12,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:12,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:12,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087630006] [2023-12-22 02:32:12,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087630006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:12,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:12,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:12,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107067295] [2023-12-22 02:32:12,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:12,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:12,928 INFO L87 Difference]: Start difference. First operand 439 states and 695 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:32:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:13,007 INFO L93 Difference]: Finished difference Result 639 states and 987 transitions. [2023-12-22 02:32:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:13,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-22 02:32:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:13,010 INFO L225 Difference]: With dead ends: 639 [2023-12-22 02:32:13,010 INFO L226 Difference]: Without dead ends: 536 [2023-12-22 02:32:13,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:13,012 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 597 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:13,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 640 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-12-22 02:32:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 532. [2023-12-22 02:32:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 471 states have (on average 1.5541401273885351) internal successors, (732), 475 states have internal predecessors, (732), 45 states have call successors, (45), 16 states have call predecessors, (45), 14 states have return successors, (49), 41 states have call predecessors, (49), 41 states have call successors, (49) [2023-12-22 02:32:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 826 transitions. [2023-12-22 02:32:13,039 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 826 transitions. Word has length 38 [2023-12-22 02:32:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:13,039 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 826 transitions. [2023-12-22 02:32:13,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:32:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 826 transitions. [2023-12-22 02:32:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 02:32:13,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:13,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:13,047 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 [2023-12-22 02:32:13,245 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 [2023-12-22 02:32:13,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:13,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash -286996888, now seen corresponding path program 1 times [2023-12-22 02:32:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289827280] [2023-12-22 02:32:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:13,247 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 [2023-12-22 02:32:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:13,248 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) [2023-12-22 02:32:13,250 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 [2023-12-22 02:32:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:13,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:13,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:13,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:13,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:13,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289827280] [2023-12-22 02:32:13,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289827280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:13,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:13,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253544785] [2023-12-22 02:32:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:13,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:13,360 INFO L87 Difference]: Start difference. First operand 532 states and 826 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:32:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:13,459 INFO L93 Difference]: Finished difference Result 884 states and 1323 transitions. [2023-12-22 02:32:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-22 02:32:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:13,463 INFO L225 Difference]: With dead ends: 884 [2023-12-22 02:32:13,463 INFO L226 Difference]: Without dead ends: 688 [2023-12-22 02:32:13,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:13,466 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 58 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:13,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1148 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-12-22 02:32:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 637. [2023-12-22 02:32:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 564 states have (on average 1.5265957446808511) internal successors, (861), 570 states have internal predecessors, (861), 51 states have call successors, (51), 22 states have call predecessors, (51), 20 states have return successors, (57), 45 states have call predecessors, (57), 47 states have call successors, (57) [2023-12-22 02:32:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 969 transitions. [2023-12-22 02:32:13,489 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 969 transitions. Word has length 39 [2023-12-22 02:32:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:13,489 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 969 transitions. [2023-12-22 02:32:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:32:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 969 transitions. [2023-12-22 02:32:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-22 02:32:13,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:13,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:13,500 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 [2023-12-22 02:32:13,697 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 [2023-12-22 02:32:13,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:13,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash -722210131, now seen corresponding path program 1 times [2023-12-22 02:32:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189151398] [2023-12-22 02:32:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:13,699 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 [2023-12-22 02:32:13,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:13,700 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) [2023-12-22 02:32:13,704 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 [2023-12-22 02:32:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:13,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:13,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:13,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:13,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189151398] [2023-12-22 02:32:13,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189151398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:13,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:13,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:13,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790653140] [2023-12-22 02:32:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:13,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:13,801 INFO L87 Difference]: Start difference. First operand 637 states and 969 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:32:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:13,924 INFO L93 Difference]: Finished difference Result 1089 states and 1606 transitions. [2023-12-22 02:32:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:13,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-22 02:32:13,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:13,929 INFO L225 Difference]: With dead ends: 1089 [2023-12-22 02:32:13,929 INFO L226 Difference]: Without dead ends: 788 [2023-12-22 02:32:13,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:13,931 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 46 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:13,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1187 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-22 02:32:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2023-12-22 02:32:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 693 states have (on average 1.4718614718614718) internal successors, (1020), 699 states have internal predecessors, (1020), 65 states have call successors, (65), 30 states have call predecessors, (65), 28 states have return successors, (79), 59 states have call predecessors, (79), 61 states have call successors, (79) [2023-12-22 02:32:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1164 transitions. [2023-12-22 02:32:13,972 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1164 transitions. Word has length 54 [2023-12-22 02:32:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:13,973 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1164 transitions. [2023-12-22 02:32:13,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:32:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1164 transitions. [2023-12-22 02:32:13,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-22 02:32:13,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:13,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:13,998 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 (5)] Ended with exit code 0 [2023-12-22 02:32:14,182 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 [2023-12-22 02:32:14,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:14,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 734186141, now seen corresponding path program 1 times [2023-12-22 02:32:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242733408] [2023-12-22 02:32:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:14,184 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 [2023-12-22 02:32:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:14,185 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) [2023-12-22 02:32:14,190 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 [2023-12-22 02:32:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:14,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:14,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 02:32:14,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:14,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242733408] [2023-12-22 02:32:14,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242733408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:14,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:14,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:14,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949824558] [2023-12-22 02:32:14,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:14,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:14,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:14,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:14,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:14,323 INFO L87 Difference]: Start difference. First operand 788 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:14,417 INFO L93 Difference]: Finished difference Result 1273 states and 1823 transitions. [2023-12-22 02:32:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:14,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-22 02:32:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:14,421 INFO L225 Difference]: With dead ends: 1273 [2023-12-22 02:32:14,422 INFO L226 Difference]: Without dead ends: 901 [2023-12-22 02:32:14,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:14,423 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 584 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:14,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 644 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-12-22 02:32:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2023-12-22 02:32:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 792 states have (on average 1.4368686868686869) internal successors, (1138), 798 states have internal predecessors, (1138), 73 states have call successors, (73), 36 states have call predecessors, (73), 34 states have return successors, (91), 67 states have call predecessors, (91), 69 states have call successors, (91) [2023-12-22 02:32:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1302 transitions. [2023-12-22 02:32:14,457 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1302 transitions. Word has length 59 [2023-12-22 02:32:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:14,457 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1302 transitions. [2023-12-22 02:32:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1302 transitions. [2023-12-22 02:32:14,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:32:14,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:14,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:14,480 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 [2023-12-22 02:32:14,664 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 [2023-12-22 02:32:14,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:14,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1816313296, now seen corresponding path program 1 times [2023-12-22 02:32:14,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:14,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909984144] [2023-12-22 02:32:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:14,668 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 [2023-12-22 02:32:14,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:14,669 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) [2023-12-22 02:32:14,670 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 [2023-12-22 02:32:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:14,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:14,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-22 02:32:14,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:14,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909984144] [2023-12-22 02:32:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909984144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:14,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:14,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429542197] [2023-12-22 02:32:14,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:14,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:14,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:14,786 INFO L87 Difference]: Start difference. First operand 901 states and 1302 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:14,900 INFO L93 Difference]: Finished difference Result 1400 states and 1991 transitions. [2023-12-22 02:32:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:14,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-22 02:32:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:14,903 INFO L225 Difference]: With dead ends: 1400 [2023-12-22 02:32:14,903 INFO L226 Difference]: Without dead ends: 962 [2023-12-22 02:32:14,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:14,905 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 11 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:14,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1717 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-12-22 02:32:14,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 932. [2023-12-22 02:32:14,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 821 states have (on average 1.4214372716199757) internal successors, (1167), 829 states have internal predecessors, (1167), 73 states have call successors, (73), 36 states have call predecessors, (73), 36 states have return successors, (93), 67 states have call predecessors, (93), 69 states have call successors, (93) [2023-12-22 02:32:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1333 transitions. [2023-12-22 02:32:14,935 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1333 transitions. Word has length 60 [2023-12-22 02:32:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:14,935 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1333 transitions. [2023-12-22 02:32:14,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1333 transitions. [2023-12-22 02:32:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:32:14,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:14,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:14,944 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 [2023-12-22 02:32:15,140 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 [2023-12-22 02:32:15,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:15,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1230473232, now seen corresponding path program 1 times [2023-12-22 02:32:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359891230] [2023-12-22 02:32:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:15,141 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 [2023-12-22 02:32:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:15,143 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) [2023-12-22 02:32:15,177 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 [2023-12-22 02:32:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:15,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:15,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:32:15,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:15,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:15,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359891230] [2023-12-22 02:32:15,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359891230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:15,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:15,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:15,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620485008] [2023-12-22 02:32:15,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:15,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:15,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:15,266 INFO L87 Difference]: Start difference. First operand 932 states and 1333 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:15,397 INFO L93 Difference]: Finished difference Result 1349 states and 1902 transitions. [2023-12-22 02:32:15,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:15,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-22 02:32:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:15,400 INFO L225 Difference]: With dead ends: 1349 [2023-12-22 02:32:15,400 INFO L226 Difference]: Without dead ends: 839 [2023-12-22 02:32:15,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:15,401 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 2 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:15,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1717 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-22 02:32:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 833. [2023-12-22 02:32:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 736 states have (on average 1.4293478260869565) internal successors, (1052), 746 states have internal predecessors, (1052), 63 states have call successors, (63), 30 states have call predecessors, (63), 32 states have return successors, (79), 57 states have call predecessors, (79), 59 states have call successors, (79) [2023-12-22 02:32:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1194 transitions. [2023-12-22 02:32:15,427 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1194 transitions. Word has length 60 [2023-12-22 02:32:15,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:15,428 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1194 transitions. [2023-12-22 02:32:15,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:15,428 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1194 transitions. [2023-12-22 02:32:15,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:32:15,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:15,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:15,432 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 [2023-12-22 02:32:15,632 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 [2023-12-22 02:32:15,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:15,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1266854448, now seen corresponding path program 1 times [2023-12-22 02:32:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314339789] [2023-12-22 02:32:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:15,633 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 [2023-12-22 02:32:15,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:15,638 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) [2023-12-22 02:32:15,670 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 [2023-12-22 02:32:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:15,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:15,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:32:15,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:15,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:15,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314339789] [2023-12-22 02:32:15,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314339789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:15,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:15,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098525709] [2023-12-22 02:32:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:15,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:15,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:15,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:15,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:15,732 INFO L87 Difference]: Start difference. First operand 833 states and 1194 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:15,823 INFO L93 Difference]: Finished difference Result 1242 states and 1737 transitions. [2023-12-22 02:32:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:15,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-22 02:32:15,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:15,826 INFO L225 Difference]: With dead ends: 1242 [2023-12-22 02:32:15,826 INFO L226 Difference]: Without dead ends: 831 [2023-12-22 02:32:15,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:15,827 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 66 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:15,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1163 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2023-12-22 02:32:15,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 793. [2023-12-22 02:32:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 702 states have (on average 1.4188034188034189) internal successors, (996), 712 states have internal predecessors, (996), 59 states have call successors, (59), 28 states have call predecessors, (59), 30 states have return successors, (73), 53 states have call predecessors, (73), 55 states have call successors, (73) [2023-12-22 02:32:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1128 transitions. [2023-12-22 02:32:15,848 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1128 transitions. Word has length 60 [2023-12-22 02:32:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:15,848 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1128 transitions. [2023-12-22 02:32:15,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:32:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1128 transitions. [2023-12-22 02:32:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:32:15,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:15,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:15,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:16,055 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 [2023-12-22 02:32:16,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:16,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash -454596207, now seen corresponding path program 1 times [2023-12-22 02:32:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:16,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523590482] [2023-12-22 02:32:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:16,056 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 [2023-12-22 02:32:16,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:16,057 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) [2023-12-22 02:32:16,058 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 [2023-12-22 02:32:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:16,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:16,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:16,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:32:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-22 02:32:16,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523590482] [2023-12-22 02:32:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523590482] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 02:32:16,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 02:32:16,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-12-22 02:32:16,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705200636] [2023-12-22 02:32:16,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:16,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:16,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:16,216 INFO L87 Difference]: Start difference. First operand 793 states and 1128 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:32:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:16,427 INFO L93 Difference]: Finished difference Result 838 states and 1183 transitions. [2023-12-22 02:32:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:16,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-22 02:32:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:16,431 INFO L225 Difference]: With dead ends: 838 [2023-12-22 02:32:16,431 INFO L226 Difference]: Without dead ends: 835 [2023-12-22 02:32:16,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:16,433 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1123 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:16,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 641 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:32:16,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-12-22 02:32:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 792. [2023-12-22 02:32:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 702 states have (on average 1.415954415954416) internal successors, (994), 711 states have internal predecessors, (994), 58 states have call successors, (58), 28 states have call predecessors, (58), 30 states have return successors, (73), 53 states have call predecessors, (73), 55 states have call successors, (73) [2023-12-22 02:32:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1125 transitions. [2023-12-22 02:32:16,477 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1125 transitions. Word has length 60 [2023-12-22 02:32:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:16,478 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1125 transitions. [2023-12-22 02:32:16,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:32:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1125 transitions. [2023-12-22 02:32:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-22 02:32:16,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:16,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:16,486 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 (10)] Ended with exit code 0 [2023-12-22 02:32:16,684 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 [2023-12-22 02:32:16,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:16,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1208939586, now seen corresponding path program 1 times [2023-12-22 02:32:16,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:16,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143640933] [2023-12-22 02:32:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:16,686 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 [2023-12-22 02:32:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:16,686 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) [2023-12-22 02:32:16,688 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 [2023-12-22 02:32:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:16,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:32:16,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:16,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:32:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-22 02:32:17,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143640933] [2023-12-22 02:32:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143640933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:32:17,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:32:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-22 02:32:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232948836] [2023-12-22 02:32:17,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:32:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 02:32:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 02:32:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:32:17,008 INFO L87 Difference]: Start difference. First operand 792 states and 1125 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-22 02:32:17,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:17,364 INFO L93 Difference]: Finished difference Result 1383 states and 1878 transitions. [2023-12-22 02:32:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:32:17,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 61 [2023-12-22 02:32:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:17,369 INFO L225 Difference]: With dead ends: 1383 [2023-12-22 02:32:17,369 INFO L226 Difference]: Without dead ends: 1380 [2023-12-22 02:32:17,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:32:17,369 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 1239 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:17,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2458 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2023-12-22 02:32:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1085. [2023-12-22 02:32:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 959 states have (on average 1.3743482794577686) internal successors, (1318), 974 states have internal predecessors, (1318), 77 states have call successors, (77), 41 states have call predecessors, (77), 47 states have return successors, (104), 70 states have call predecessors, (104), 74 states have call successors, (104) [2023-12-22 02:32:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1499 transitions. [2023-12-22 02:32:17,434 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1499 transitions. Word has length 61 [2023-12-22 02:32:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:17,435 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1499 transitions. [2023-12-22 02:32:17,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-22 02:32:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1499 transitions. [2023-12-22 02:32:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:32:17,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:17,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:17,460 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 [2023-12-22 02:32:17,644 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 [2023-12-22 02:32:17,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:17,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1619519811, now seen corresponding path program 2 times [2023-12-22 02:32:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:17,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930269604] [2023-12-22 02:32:17,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 02:32:17,645 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 [2023-12-22 02:32:17,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:17,647 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) [2023-12-22 02:32:17,647 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 [2023-12-22 02:32:17,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 02:32:17,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 02:32:17,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:17,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-22 02:32:17,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:17,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:17,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930269604] [2023-12-22 02:32:17,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930269604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:17,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:17,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:17,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131116287] [2023-12-22 02:32:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:17,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:17,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:17,758 INFO L87 Difference]: Start difference. First operand 1085 states and 1499 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-22 02:32:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:17,852 INFO L93 Difference]: Finished difference Result 1608 states and 2170 transitions. [2023-12-22 02:32:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:17,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-22 02:32:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:17,855 INFO L225 Difference]: With dead ends: 1608 [2023-12-22 02:32:17,855 INFO L226 Difference]: Without dead ends: 1027 [2023-12-22 02:32:17,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:17,857 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 584 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:17,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 659 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-12-22 02:32:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1021. [2023-12-22 02:32:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 902 states have (on average 1.3725055432372506) internal successors, (1238), 917 states have internal predecessors, (1238), 74 states have call successors, (74), 38 states have call predecessors, (74), 43 states have return successors, (99), 66 states have call predecessors, (99), 71 states have call successors, (99) [2023-12-22 02:32:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1411 transitions. [2023-12-22 02:32:17,896 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1411 transitions. Word has length 78 [2023-12-22 02:32:17,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:17,897 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1411 transitions. [2023-12-22 02:32:17,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-22 02:32:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1411 transitions. [2023-12-22 02:32:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-22 02:32:17,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:17,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:17,905 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 [2023-12-22 02:32:18,102 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 [2023-12-22 02:32:18,103 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:18,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1853714223, now seen corresponding path program 1 times [2023-12-22 02:32:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630679584] [2023-12-22 02:32:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:18,104 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 [2023-12-22 02:32:18,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:18,105 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) [2023-12-22 02:32:18,124 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 [2023-12-22 02:32:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:18,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:18,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-22 02:32:18,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:18,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630679584] [2023-12-22 02:32:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630679584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:18,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26201031] [2023-12-22 02:32:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:18,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:18,229 INFO L87 Difference]: Start difference. First operand 1021 states and 1411 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:18,697 INFO L93 Difference]: Finished difference Result 1739 states and 2322 transitions. [2023-12-22 02:32:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-22 02:32:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:18,701 INFO L225 Difference]: With dead ends: 1739 [2023-12-22 02:32:18,701 INFO L226 Difference]: Without dead ends: 1054 [2023-12-22 02:32:18,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:18,702 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 813 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:18,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 647 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-12-22 02:32:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1021. [2023-12-22 02:32:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 902 states have (on average 1.3558758314855877) internal successors, (1223), 917 states have internal predecessors, (1223), 74 states have call successors, (74), 38 states have call predecessors, (74), 43 states have return successors, (98), 66 states have call predecessors, (98), 71 states have call successors, (98) [2023-12-22 02:32:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1395 transitions. [2023-12-22 02:32:18,753 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1395 transitions. Word has length 92 [2023-12-22 02:32:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:18,754 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1395 transitions. [2023-12-22 02:32:18,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:18,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1395 transitions. [2023-12-22 02:32:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-22 02:32:18,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:18,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:18,772 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 [2023-12-22 02:32:18,959 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 [2023-12-22 02:32:18,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:18,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1200447820, now seen corresponding path program 1 times [2023-12-22 02:32:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:18,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816099331] [2023-12-22 02:32:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:18,960 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 [2023-12-22 02:32:18,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:18,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:18,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 02:32:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:19,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:19,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-22 02:32:19,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:19,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816099331] [2023-12-22 02:32:19,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816099331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:19,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:19,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143090219] [2023-12-22 02:32:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:19,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:19,065 INFO L87 Difference]: Start difference. First operand 1021 states and 1395 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-22 02:32:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:19,170 INFO L93 Difference]: Finished difference Result 1302 states and 1739 transitions. [2023-12-22 02:32:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 93 [2023-12-22 02:32:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:19,171 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:19,171 INFO L226 Difference]: Without dead ends: 331 [2023-12-22 02:32:19,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:19,173 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 49 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:19,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1157 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:19,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-22 02:32:19,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-12-22 02:32:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 297 states have (on average 1.6363636363636365) internal successors, (486), 299 states have internal predecessors, (486), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-22 02:32:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 538 transitions. [2023-12-22 02:32:19,184 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 538 transitions. Word has length 93 [2023-12-22 02:32:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:19,185 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 538 transitions. [2023-12-22 02:32:19,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-22 02:32:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 538 transitions. [2023-12-22 02:32:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:19,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:19,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:19,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:19,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:19,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:19,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:19,390 INFO L85 PathProgramCache]: Analyzing trace with hash -899892870, now seen corresponding path program 1 times [2023-12-22 02:32:19,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:19,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383849806] [2023-12-22 02:32:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:19,391 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 [2023-12-22 02:32:19,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:19,392 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:19,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 02:32:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:19,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:19,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:19,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:19,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:19,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383849806] [2023-12-22 02:32:19,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383849806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:19,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:19,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:19,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224442640] [2023-12-22 02:32:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:19,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:19,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:19,552 INFO L87 Difference]: Start difference. First operand 331 states and 538 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:19,606 INFO L93 Difference]: Finished difference Result 654 states and 1063 transitions. [2023-12-22 02:32:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:19,607 INFO L225 Difference]: With dead ends: 654 [2023-12-22 02:32:19,607 INFO L226 Difference]: Without dead ends: 331 [2023-12-22 02:32:19,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:19,608 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 528 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:19,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 495 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:32:19,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-22 02:32:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-12-22 02:32:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 297 states have (on average 1.632996632996633) internal successors, (485), 299 states have internal predecessors, (485), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-22 02:32:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 537 transitions. [2023-12-22 02:32:19,620 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 537 transitions. Word has length 152 [2023-12-22 02:32:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:19,620 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 537 transitions. [2023-12-22 02:32:19,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 537 transitions. [2023-12-22 02:32:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:19,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:19,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:19,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:19,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:19,826 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:19,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1326447368, now seen corresponding path program 1 times [2023-12-22 02:32:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750338424] [2023-12-22 02:32:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:19,827 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 [2023-12-22 02:32:19,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:19,828 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:19,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 02:32:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:19,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:19,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:19,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:19,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750338424] [2023-12-22 02:32:19,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750338424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:19,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350893580] [2023-12-22 02:32:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:19,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:19,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:19,992 INFO L87 Difference]: Start difference. First operand 331 states and 537 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:20,047 INFO L93 Difference]: Finished difference Result 646 states and 1046 transitions. [2023-12-22 02:32:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:20,048 INFO L225 Difference]: With dead ends: 646 [2023-12-22 02:32:20,048 INFO L226 Difference]: Without dead ends: 331 [2023-12-22 02:32:20,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:20,050 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:20,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 494 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:32:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-22 02:32:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-12-22 02:32:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 297 states have (on average 1.6296296296296295) internal successors, (484), 299 states have internal predecessors, (484), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-22 02:32:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 536 transitions. [2023-12-22 02:32:20,062 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 536 transitions. Word has length 152 [2023-12-22 02:32:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:20,063 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 536 transitions. [2023-12-22 02:32:20,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 536 transitions. [2023-12-22 02:32:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:20,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:20,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:20,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:20,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:20,269 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:20,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1569566326, now seen corresponding path program 1 times [2023-12-22 02:32:20,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:20,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575958238] [2023-12-22 02:32:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:20,270 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 [2023-12-22 02:32:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:20,271 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:20,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 02:32:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:20,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:20,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:20,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:20,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575958238] [2023-12-22 02:32:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575958238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:20,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:20,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97512476] [2023-12-22 02:32:20,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:20,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:20,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:20,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:20,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:20,454 INFO L87 Difference]: Start difference. First operand 331 states and 536 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:21,044 INFO L93 Difference]: Finished difference Result 1002 states and 1639 transitions. [2023-12-22 02:32:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:32:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:21,047 INFO L225 Difference]: With dead ends: 1002 [2023-12-22 02:32:21,047 INFO L226 Difference]: Without dead ends: 689 [2023-12-22 02:32:21,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:21,049 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1025 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:21,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 1388 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:32:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-22 02:32:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 660. [2023-12-22 02:32:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.641068447412354) internal successors, (983), 602 states have internal predecessors, (983), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1076 transitions. [2023-12-22 02:32:21,073 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1076 transitions. Word has length 152 [2023-12-22 02:32:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:21,074 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1076 transitions. [2023-12-22 02:32:21,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1076 transitions. [2023-12-22 02:32:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:21,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:21,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:21,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:21,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:21,280 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:21,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2106532210, now seen corresponding path program 1 times [2023-12-22 02:32:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:21,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695016230] [2023-12-22 02:32:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:21,281 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 [2023-12-22 02:32:21,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:21,282 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:21,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 02:32:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:21,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:21,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:21,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:21,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695016230] [2023-12-22 02:32:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695016230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:21,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:21,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:21,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229916664] [2023-12-22 02:32:21,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:21,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:21,461 INFO L87 Difference]: Start difference. First operand 660 states and 1076 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:21,844 INFO L93 Difference]: Finished difference Result 1302 states and 2129 transitions. [2023-12-22 02:32:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:21,847 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:21,847 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:21,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:21,848 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 721 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:21,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 868 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.6293823038397328) internal successors, (976), 602 states have internal predecessors, (976), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1069 transitions. [2023-12-22 02:32:21,872 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1069 transitions. Word has length 152 [2023-12-22 02:32:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:21,872 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1069 transitions. [2023-12-22 02:32:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1069 transitions. [2023-12-22 02:32:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:21,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:21,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:21,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:22,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:22,078 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:22,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1513274960, now seen corresponding path program 1 times [2023-12-22 02:32:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:22,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335598196] [2023-12-22 02:32:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:22,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:22,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:22,084 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:22,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 02:32:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:22,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:22,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:22,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:22,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:22,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335598196] [2023-12-22 02:32:22,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335598196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:22,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:22,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:22,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330820053] [2023-12-22 02:32:22,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:22,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:22,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:22,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:22,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:22,276 INFO L87 Difference]: Start difference. First operand 660 states and 1069 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:22,662 INFO L93 Difference]: Finished difference Result 1302 states and 2115 transitions. [2023-12-22 02:32:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:22,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:22,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:22,665 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:22,665 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:22,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:22,666 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 715 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:22,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 861 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.6176961602671118) internal successors, (969), 602 states have internal predecessors, (969), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1062 transitions. [2023-12-22 02:32:22,690 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1062 transitions. Word has length 152 [2023-12-22 02:32:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:22,690 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1062 transitions. [2023-12-22 02:32:22,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1062 transitions. [2023-12-22 02:32:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:22,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:22,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:22,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:22,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:22,897 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:22,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:22,897 INFO L85 PathProgramCache]: Analyzing trace with hash -11726796, now seen corresponding path program 1 times [2023-12-22 02:32:22,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:22,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398885508] [2023-12-22 02:32:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:22,898 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 [2023-12-22 02:32:22,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:22,899 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:22,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 02:32:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:23,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:23,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:23,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:23,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:23,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398885508] [2023-12-22 02:32:23,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398885508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:23,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:23,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:23,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884844383] [2023-12-22 02:32:23,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:23,099 INFO L87 Difference]: Start difference. First operand 660 states and 1062 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:23,478 INFO L93 Difference]: Finished difference Result 1302 states and 2101 transitions. [2023-12-22 02:32:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:23,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:23,480 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:23,480 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:23,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:23,482 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 709 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:23,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 854 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.6060100166944908) internal successors, (962), 602 states have internal predecessors, (962), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1055 transitions. [2023-12-22 02:32:23,510 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1055 transitions. Word has length 152 [2023-12-22 02:32:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:23,510 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1055 transitions. [2023-12-22 02:32:23,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1055 transitions. [2023-12-22 02:32:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:23,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:23,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:23,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:23,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:23,716 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:23,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1625857744, now seen corresponding path program 1 times [2023-12-22 02:32:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244721084] [2023-12-22 02:32:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:23,717 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 [2023-12-22 02:32:23,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:23,718 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:23,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 02:32:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:23,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:23,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:23,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:23,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:23,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244721084] [2023-12-22 02:32:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244721084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912596506] [2023-12-22 02:32:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:23,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:23,889 INFO L87 Difference]: Start difference. First operand 660 states and 1055 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:24,254 INFO L93 Difference]: Finished difference Result 1302 states and 2087 transitions. [2023-12-22 02:32:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:24,256 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:24,256 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:24,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:24,258 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 703 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:24,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 847 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.5943238731218699) internal successors, (955), 602 states have internal predecessors, (955), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1048 transitions. [2023-12-22 02:32:24,285 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1048 transitions. Word has length 152 [2023-12-22 02:32:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:24,285 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1048 transitions. [2023-12-22 02:32:24,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1048 transitions. [2023-12-22 02:32:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:24,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:24,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:24,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:24,491 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:24,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1400831820, now seen corresponding path program 1 times [2023-12-22 02:32:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916880362] [2023-12-22 02:32:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:24,492 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 [2023-12-22 02:32:24,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:24,493 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:24,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 02:32:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:24,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:24,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:24,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:24,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916880362] [2023-12-22 02:32:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916880362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:24,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:24,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666591422] [2023-12-22 02:32:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:24,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:24,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:24,677 INFO L87 Difference]: Start difference. First operand 660 states and 1048 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:25,065 INFO L93 Difference]: Finished difference Result 1302 states and 2073 transitions. [2023-12-22 02:32:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:25,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:25,068 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:25,068 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:25,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:25,070 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 697 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:25,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 840 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:25,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:25,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.5826377295492486) internal successors, (948), 602 states have internal predecessors, (948), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1041 transitions. [2023-12-22 02:32:25,100 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1041 transitions. Word has length 152 [2023-12-22 02:32:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:25,100 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1041 transitions. [2023-12-22 02:32:25,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1041 transitions. [2023-12-22 02:32:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:25,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:25,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:25,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:25,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:25,309 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:25,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2070110384, now seen corresponding path program 1 times [2023-12-22 02:32:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:25,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025509403] [2023-12-22 02:32:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:25,310 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 [2023-12-22 02:32:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:25,311 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:25,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-22 02:32:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:25,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:25,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:25,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:25,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:25,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025509403] [2023-12-22 02:32:25,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025509403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:25,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:25,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030300880] [2023-12-22 02:32:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:25,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:25,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:25,516 INFO L87 Difference]: Start difference. First operand 660 states and 1041 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:25,883 INFO L93 Difference]: Finished difference Result 1302 states and 2059 transitions. [2023-12-22 02:32:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:25,886 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:25,886 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:25,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:25,888 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 691 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:25,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 833 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:25,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.5709515859766277) internal successors, (941), 602 states have internal predecessors, (941), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1034 transitions. [2023-12-22 02:32:25,920 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1034 transitions. Word has length 152 [2023-12-22 02:32:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:25,920 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1034 transitions. [2023-12-22 02:32:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1034 transitions. [2023-12-22 02:32:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:25,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:25,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:25,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:26,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:26,127 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:26,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash 519508276, now seen corresponding path program 1 times [2023-12-22 02:32:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:26,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867395742] [2023-12-22 02:32:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:26,128 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 [2023-12-22 02:32:26,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:26,129 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:26,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-22 02:32:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:26,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:26,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:26,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:26,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:26,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867395742] [2023-12-22 02:32:26,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867395742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:26,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:26,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:26,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401982885] [2023-12-22 02:32:26,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:26,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:26,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:26,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:26,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:26,302 INFO L87 Difference]: Start difference. First operand 660 states and 1034 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:26,678 INFO L93 Difference]: Finished difference Result 1302 states and 2045 transitions. [2023-12-22 02:32:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:26,680 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:26,680 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:26,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:26,681 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 685 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:26,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 826 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.5592654424040067) internal successors, (934), 602 states have internal predecessors, (934), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1027 transitions. [2023-12-22 02:32:26,712 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1027 transitions. Word has length 152 [2023-12-22 02:32:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:26,712 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1027 transitions. [2023-12-22 02:32:26,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1027 transitions. [2023-12-22 02:32:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:26,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:26,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:26,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:26,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:26,918 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:26,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash -777437136, now seen corresponding path program 1 times [2023-12-22 02:32:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:26,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696147401] [2023-12-22 02:32:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:26,919 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 [2023-12-22 02:32:26,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:26,920 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:26,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 02:32:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:27,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:27,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:27,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:27,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696147401] [2023-12-22 02:32:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696147401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:27,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882149409] [2023-12-22 02:32:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:27,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:27,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:27,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:27,107 INFO L87 Difference]: Start difference. First operand 660 states and 1027 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:27,471 INFO L93 Difference]: Finished difference Result 1302 states and 2031 transitions. [2023-12-22 02:32:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:27,474 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:27,474 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:27,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:27,475 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 678 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:27,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 819 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.5475792988313857) internal successors, (927), 602 states have internal predecessors, (927), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1020 transitions. [2023-12-22 02:32:27,528 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1020 transitions. Word has length 152 [2023-12-22 02:32:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:27,528 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1020 transitions. [2023-12-22 02:32:27,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1020 transitions. [2023-12-22 02:32:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:27,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:27,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:27,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:27,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:27,735 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:27,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1467121262, now seen corresponding path program 1 times [2023-12-22 02:32:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:27,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210199969] [2023-12-22 02:32:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:27,736 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 [2023-12-22 02:32:27,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:27,737 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:27,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 02:32:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:27,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:27,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:27,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:27,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210199969] [2023-12-22 02:32:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210199969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:27,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:27,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:27,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53097026] [2023-12-22 02:32:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:27,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:27,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:27,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:27,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:27,931 INFO L87 Difference]: Start difference. First operand 660 states and 1020 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:28,300 INFO L93 Difference]: Finished difference Result 1302 states and 2017 transitions. [2023-12-22 02:32:28,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:28,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:28,303 INFO L225 Difference]: With dead ends: 1302 [2023-12-22 02:32:28,303 INFO L226 Difference]: Without dead ends: 660 [2023-12-22 02:32:28,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:28,305 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 672 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:28,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 812 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-22 02:32:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2023-12-22 02:32:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 599 states have (on average 1.5358931552587647) internal successors, (920), 602 states have internal predecessors, (920), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-22 02:32:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1013 transitions. [2023-12-22 02:32:28,343 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1013 transitions. Word has length 152 [2023-12-22 02:32:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:28,343 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1013 transitions. [2023-12-22 02:32:28,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1013 transitions. [2023-12-22 02:32:28,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:28,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:28,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:28,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:28,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:28,547 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:28,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1638199054, now seen corresponding path program 1 times [2023-12-22 02:32:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303908953] [2023-12-22 02:32:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:28,548 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 [2023-12-22 02:32:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:28,549 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:28,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-22 02:32:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:28,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:28,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:28,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:28,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:28,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303908953] [2023-12-22 02:32:28,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303908953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:28,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013156298] [2023-12-22 02:32:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:28,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:28,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:28,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:28,741 INFO L87 Difference]: Start difference. First operand 660 states and 1013 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:29,220 INFO L93 Difference]: Finished difference Result 1456 states and 2255 transitions. [2023-12-22 02:32:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:29,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:29,223 INFO L225 Difference]: With dead ends: 1456 [2023-12-22 02:32:29,223 INFO L226 Difference]: Without dead ends: 814 [2023-12-22 02:32:29,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:29,225 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 771 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:29,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 806 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-12-22 02:32:29,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2023-12-22 02:32:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 747 states have (on average 1.5140562248995983) internal successors, (1131), 750 states have internal predecessors, (1131), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-22 02:32:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1228 transitions. [2023-12-22 02:32:29,267 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1228 transitions. Word has length 152 [2023-12-22 02:32:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:29,267 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1228 transitions. [2023-12-22 02:32:29,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1228 transitions. [2023-12-22 02:32:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:29,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:29,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:29,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:29,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:29,473 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:29,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash 349112205, now seen corresponding path program 1 times [2023-12-22 02:32:29,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:29,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844745504] [2023-12-22 02:32:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:29,474 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 [2023-12-22 02:32:29,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:29,475 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:29,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 02:32:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:29,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:29,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:29,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:29,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:29,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844745504] [2023-12-22 02:32:29,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844745504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:29,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:29,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:29,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483974865] [2023-12-22 02:32:29,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:29,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:29,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:29,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:29,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:29,664 INFO L87 Difference]: Start difference. First operand 814 states and 1228 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:30,149 INFO L93 Difference]: Finished difference Result 1764 states and 2685 transitions. [2023-12-22 02:32:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:30,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:30,152 INFO L225 Difference]: With dead ends: 1764 [2023-12-22 02:32:30,152 INFO L226 Difference]: Without dead ends: 968 [2023-12-22 02:32:30,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:30,154 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 764 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:30,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 799 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:30,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-12-22 02:32:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2023-12-22 02:32:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 895 states have (on average 1.4949720670391062) internal successors, (1338), 898 states have internal predecessors, (1338), 51 states have call successors, (51), 21 states have call predecessors, (51), 21 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-22 02:32:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1439 transitions. [2023-12-22 02:32:30,199 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1439 transitions. Word has length 152 [2023-12-22 02:32:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:30,199 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1439 transitions. [2023-12-22 02:32:30,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1439 transitions. [2023-12-22 02:32:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:30,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:30,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:30,205 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 (28)] Ended with exit code 0 [2023-12-22 02:32:30,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:30,405 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:30,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash 453143313, now seen corresponding path program 1 times [2023-12-22 02:32:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:30,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554030035] [2023-12-22 02:32:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:30,406 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 [2023-12-22 02:32:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:30,406 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:32:30,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 02:32:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:30,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:30,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:30,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:30,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554030035] [2023-12-22 02:32:30,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554030035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:30,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:30,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033196531] [2023-12-22 02:32:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:30,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:30,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:30,576 INFO L87 Difference]: Start difference. First operand 968 states and 1439 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:31,099 INFO L93 Difference]: Finished difference Result 2072 states and 3107 transitions. [2023-12-22 02:32:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:31,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:31,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:31,102 INFO L225 Difference]: With dead ends: 2072 [2023-12-22 02:32:31,102 INFO L226 Difference]: Without dead ends: 1122 [2023-12-22 02:32:31,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:31,104 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 758 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:31,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 792 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2023-12-22 02:32:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2023-12-22 02:32:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1043 states have (on average 1.4774688398849474) internal successors, (1541), 1046 states have internal predecessors, (1541), 53 states have call successors, (53), 25 states have call predecessors, (53), 25 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-22 02:32:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1646 transitions. [2023-12-22 02:32:31,153 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1646 transitions. Word has length 152 [2023-12-22 02:32:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:31,153 INFO L495 AbstractCegarLoop]: Abstraction has 1122 states and 1646 transitions. [2023-12-22 02:32:31,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1646 transitions. [2023-12-22 02:32:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:31,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:31,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:31,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:31,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:31,358 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:31,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1625810068, now seen corresponding path program 1 times [2023-12-22 02:32:31,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:31,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065354336] [2023-12-22 02:32:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:31,359 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 [2023-12-22 02:32:31,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:31,361 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-22 02:32:31,362 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 (30)] Waiting until timeout for monitored process [2023-12-22 02:32:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:31,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:31,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:31,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:31,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065354336] [2023-12-22 02:32:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065354336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:31,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:31,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:31,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433543912] [2023-12-22 02:32:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:31,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:31,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:31,546 INFO L87 Difference]: Start difference. First operand 1122 states and 1646 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:32,023 INFO L93 Difference]: Finished difference Result 2380 states and 3521 transitions. [2023-12-22 02:32:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:32,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:32,027 INFO L225 Difference]: With dead ends: 2380 [2023-12-22 02:32:32,027 INFO L226 Difference]: Without dead ends: 1276 [2023-12-22 02:32:32,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:32,033 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 751 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:32,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 785 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-12-22 02:32:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1276. [2023-12-22 02:32:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1191 states have (on average 1.4609571788413098) internal successors, (1740), 1194 states have internal predecessors, (1740), 55 states have call successors, (55), 29 states have call predecessors, (55), 29 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-22 02:32:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1849 transitions. [2023-12-22 02:32:32,085 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1849 transitions. Word has length 152 [2023-12-22 02:32:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:32,087 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1849 transitions. [2023-12-22 02:32:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1849 transitions. [2023-12-22 02:32:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:32,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:32,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:32,096 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 (30)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:32,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:32,292 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:32,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1424584720, now seen corresponding path program 1 times [2023-12-22 02:32:32,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:32,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32760445] [2023-12-22 02:32:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:32,293 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 [2023-12-22 02:32:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:32,294 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-22 02:32:32,295 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 (31)] Waiting until timeout for monitored process [2023-12-22 02:32:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:32,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:32,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:32,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:32,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32760445] [2023-12-22 02:32:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32760445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:32,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:32,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686566109] [2023-12-22 02:32:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:32,467 INFO L87 Difference]: Start difference. First operand 1276 states and 1849 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:32,980 INFO L93 Difference]: Finished difference Result 2688 states and 3927 transitions. [2023-12-22 02:32:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:32,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:32,984 INFO L225 Difference]: With dead ends: 2688 [2023-12-22 02:32:32,984 INFO L226 Difference]: Without dead ends: 1430 [2023-12-22 02:32:32,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:32,986 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 744 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:32,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 778 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2023-12-22 02:32:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2023-12-22 02:32:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1339 states have (on average 1.445108289768484) internal successors, (1935), 1342 states have internal predecessors, (1935), 57 states have call successors, (57), 33 states have call predecessors, (57), 33 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-22 02:32:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2048 transitions. [2023-12-22 02:32:33,046 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2048 transitions. Word has length 152 [2023-12-22 02:32:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:33,046 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 2048 transitions. [2023-12-22 02:32:33,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2048 transitions. [2023-12-22 02:32:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:33,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:33,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:33,054 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 (31)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:33,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:33,252 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:33,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2144872971, now seen corresponding path program 1 times [2023-12-22 02:32:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:33,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723599684] [2023-12-22 02:32:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:33,253 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 [2023-12-22 02:32:33,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:33,255 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-22 02:32:33,272 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 (32)] Waiting until timeout for monitored process [2023-12-22 02:32:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:33,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:33,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:33,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:33,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:33,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723599684] [2023-12-22 02:32:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723599684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912165715] [2023-12-22 02:32:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:33,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:33,432 INFO L87 Difference]: Start difference. First operand 1430 states and 2048 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:33,924 INFO L93 Difference]: Finished difference Result 2996 states and 4325 transitions. [2023-12-22 02:32:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:33,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:33,928 INFO L225 Difference]: With dead ends: 2996 [2023-12-22 02:32:33,928 INFO L226 Difference]: Without dead ends: 1584 [2023-12-22 02:32:33,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:33,930 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 736 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:33,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 771 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2023-12-22 02:32:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2023-12-22 02:32:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1487 states have (on average 1.429724277067922) internal successors, (2126), 1490 states have internal predecessors, (2126), 59 states have call successors, (59), 37 states have call predecessors, (59), 37 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-22 02:32:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2243 transitions. [2023-12-22 02:32:33,996 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2243 transitions. Word has length 152 [2023-12-22 02:32:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:33,996 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2243 transitions. [2023-12-22 02:32:33,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2243 transitions. [2023-12-22 02:32:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:33,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:33,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:34,003 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 (32)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:34,202 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:34,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -148208055, now seen corresponding path program 1 times [2023-12-22 02:32:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845940947] [2023-12-22 02:32:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:34,202 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 [2023-12-22 02:32:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:34,206 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-22 02:32:34,207 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 (33)] Waiting until timeout for monitored process [2023-12-22 02:32:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:34,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:34,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:34,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:34,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845940947] [2023-12-22 02:32:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845940947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:34,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171004978] [2023-12-22 02:32:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:34,377 INFO L87 Difference]: Start difference. First operand 1584 states and 2243 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:34,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:34,873 INFO L93 Difference]: Finished difference Result 3304 states and 4715 transitions. [2023-12-22 02:32:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:34,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:34,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:34,878 INFO L225 Difference]: With dead ends: 3304 [2023-12-22 02:32:34,878 INFO L226 Difference]: Without dead ends: 1738 [2023-12-22 02:32:34,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:34,880 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 729 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:34,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 764 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2023-12-22 02:32:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2023-12-22 02:32:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1635 states have (on average 1.4146788990825687) internal successors, (2313), 1638 states have internal predecessors, (2313), 61 states have call successors, (61), 41 states have call predecessors, (61), 41 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2023-12-22 02:32:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2434 transitions. [2023-12-22 02:32:34,949 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2434 transitions. Word has length 152 [2023-12-22 02:32:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:34,950 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2434 transitions. [2023-12-22 02:32:34,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2434 transitions. [2023-12-22 02:32:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:34,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:34,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:34,957 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 (33)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:35,156 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:35,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 911127438, now seen corresponding path program 1 times [2023-12-22 02:32:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:35,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547694083] [2023-12-22 02:32:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:35,156 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 [2023-12-22 02:32:35,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:35,158 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-22 02:32:35,163 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 (34)] Waiting until timeout for monitored process [2023-12-22 02:32:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:35,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:35,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:35,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:35,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547694083] [2023-12-22 02:32:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547694083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:35,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542715010] [2023-12-22 02:32:35,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:35,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:35,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:35,331 INFO L87 Difference]: Start difference. First operand 1738 states and 2434 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:35,871 INFO L93 Difference]: Finished difference Result 3612 states and 5097 transitions. [2023-12-22 02:32:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:35,880 INFO L225 Difference]: With dead ends: 3612 [2023-12-22 02:32:35,881 INFO L226 Difference]: Without dead ends: 1892 [2023-12-22 02:32:35,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:35,884 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 722 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:35,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 757 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-12-22 02:32:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2023-12-22 02:32:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1783 states have (on average 1.3998878295008412) internal successors, (2496), 1786 states have internal predecessors, (2496), 63 states have call successors, (63), 45 states have call predecessors, (63), 45 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2023-12-22 02:32:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2621 transitions. [2023-12-22 02:32:35,986 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2621 transitions. Word has length 152 [2023-12-22 02:32:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:35,986 INFO L495 AbstractCegarLoop]: Abstraction has 1892 states and 2621 transitions. [2023-12-22 02:32:35,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2621 transitions. [2023-12-22 02:32:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:35,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:35,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:35,991 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 (34)] Ended with exit code 0 [2023-12-22 02:32:36,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:36,187 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:36,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1601338506, now seen corresponding path program 1 times [2023-12-22 02:32:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:36,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645526142] [2023-12-22 02:32:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:36,188 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 [2023-12-22 02:32:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:36,189 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-22 02:32:36,190 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 (35)] Waiting until timeout for monitored process [2023-12-22 02:32:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:36,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:36,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:36,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:36,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:36,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645526142] [2023-12-22 02:32:36,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645526142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:36,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:36,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:36,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074390666] [2023-12-22 02:32:36,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:36,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:36,382 INFO L87 Difference]: Start difference. First operand 1892 states and 2621 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:36,920 INFO L93 Difference]: Finished difference Result 3920 states and 5471 transitions. [2023-12-22 02:32:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:36,930 INFO L225 Difference]: With dead ends: 3920 [2023-12-22 02:32:36,931 INFO L226 Difference]: Without dead ends: 2046 [2023-12-22 02:32:36,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:36,935 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 715 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:36,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 750 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2023-12-22 02:32:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2046. [2023-12-22 02:32:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1931 states have (on average 1.3852925945106163) internal successors, (2675), 1934 states have internal predecessors, (2675), 65 states have call successors, (65), 49 states have call predecessors, (65), 49 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-22 02:32:37,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 2804 transitions. [2023-12-22 02:32:37,096 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 2804 transitions. Word has length 152 [2023-12-22 02:32:37,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:37,096 INFO L495 AbstractCegarLoop]: Abstraction has 2046 states and 2804 transitions. [2023-12-22 02:32:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:37,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 2804 transitions. [2023-12-22 02:32:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:37,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:37,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:37,101 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 (35)] Ended with exit code 0 [2023-12-22 02:32:37,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:37,298 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:37,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash -654653425, now seen corresponding path program 1 times [2023-12-22 02:32:37,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:37,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128813372] [2023-12-22 02:32:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:37,299 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 [2023-12-22 02:32:37,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:37,300 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-22 02:32:37,302 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 (36)] Waiting until timeout for monitored process [2023-12-22 02:32:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:37,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:37,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:37,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:37,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128813372] [2023-12-22 02:32:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128813372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218853352] [2023-12-22 02:32:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:37,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:37,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:37,498 INFO L87 Difference]: Start difference. First operand 2046 states and 2804 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:37,999 INFO L93 Difference]: Finished difference Result 4228 states and 5837 transitions. [2023-12-22 02:32:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:37,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:38,004 INFO L225 Difference]: With dead ends: 4228 [2023-12-22 02:32:38,004 INFO L226 Difference]: Without dead ends: 2200 [2023-12-22 02:32:38,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:38,007 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 708 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:38,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 743 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2023-12-22 02:32:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 2200. [2023-12-22 02:32:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2079 states have (on average 1.3708513708513708) internal successors, (2850), 2082 states have internal predecessors, (2850), 67 states have call successors, (67), 53 states have call predecessors, (67), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2023-12-22 02:32:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2983 transitions. [2023-12-22 02:32:38,123 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2983 transitions. Word has length 152 [2023-12-22 02:32:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:38,124 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 2983 transitions. [2023-12-22 02:32:38,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2983 transitions. [2023-12-22 02:32:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:38,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:38,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:38,129 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 (36)] Ended with exit code 0 [2023-12-22 02:32:38,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:38,329 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:38,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash 691314699, now seen corresponding path program 1 times [2023-12-22 02:32:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:38,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67823356] [2023-12-22 02:32:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:38,331 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 [2023-12-22 02:32:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:38,332 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-12-22 02:32:38,364 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 (37)] Waiting until timeout for monitored process [2023-12-22 02:32:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:38,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:38,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:38,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:38,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67823356] [2023-12-22 02:32:38,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67823356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:38,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:38,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:38,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531907050] [2023-12-22 02:32:38,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:38,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:38,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:38,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:38,511 INFO L87 Difference]: Start difference. First operand 2200 states and 2983 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:39,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:39,033 INFO L93 Difference]: Finished difference Result 4536 states and 6195 transitions. [2023-12-22 02:32:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:39,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:39,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:39,044 INFO L225 Difference]: With dead ends: 4536 [2023-12-22 02:32:39,044 INFO L226 Difference]: Without dead ends: 2354 [2023-12-22 02:32:39,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:39,047 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 701 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:39,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 736 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2023-12-22 02:32:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2354. [2023-12-22 02:32:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2354 states, 2227 states have (on average 1.3565334530758868) internal successors, (3021), 2230 states have internal predecessors, (3021), 69 states have call successors, (69), 57 states have call predecessors, (69), 57 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-22 02:32:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3158 transitions. [2023-12-22 02:32:39,146 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3158 transitions. Word has length 152 [2023-12-22 02:32:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:39,147 INFO L495 AbstractCegarLoop]: Abstraction has 2354 states and 3158 transitions. [2023-12-22 02:32:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3158 transitions. [2023-12-22 02:32:39,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:39,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:39,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:39,155 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 (37)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:39,353 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:39,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -568010288, now seen corresponding path program 1 times [2023-12-22 02:32:39,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:39,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044104143] [2023-12-22 02:32:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:39,354 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 [2023-12-22 02:32:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:39,355 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-22 02:32:39,355 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 (38)] Waiting until timeout for monitored process [2023-12-22 02:32:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:39,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:39,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:39,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:39,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:39,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044104143] [2023-12-22 02:32:39,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044104143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:39,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:39,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:39,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945724273] [2023-12-22 02:32:39,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:39,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:39,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:39,488 INFO L87 Difference]: Start difference. First operand 2354 states and 3158 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:39,673 INFO L93 Difference]: Finished difference Result 4829 states and 6524 transitions. [2023-12-22 02:32:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:39,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:39,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:39,678 INFO L225 Difference]: With dead ends: 4829 [2023-12-22 02:32:39,678 INFO L226 Difference]: Without dead ends: 2494 [2023-12-22 02:32:39,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:39,682 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 101 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:39,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1287 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:39,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2023-12-22 02:32:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2358. [2023-12-22 02:32:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2231 states have (on average 1.3460331689825191) internal successors, (3003), 2234 states have internal predecessors, (3003), 69 states have call successors, (69), 57 states have call predecessors, (69), 57 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-22 02:32:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 3140 transitions. [2023-12-22 02:32:39,783 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 3140 transitions. Word has length 152 [2023-12-22 02:32:39,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:39,783 INFO L495 AbstractCegarLoop]: Abstraction has 2358 states and 3140 transitions. [2023-12-22 02:32:39,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 3140 transitions. [2023-12-22 02:32:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:39,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:39,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:39,790 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 (38)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:39,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:39,989 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:39,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:39,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1875152686, now seen corresponding path program 1 times [2023-12-22 02:32:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374005236] [2023-12-22 02:32:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:39,990 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 [2023-12-22 02:32:39,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:39,991 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-22 02:32:39,995 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 (39)] Waiting until timeout for monitored process [2023-12-22 02:32:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:40,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:40,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:40,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:40,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:40,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374005236] [2023-12-22 02:32:40,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374005236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:40,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:40,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587760937] [2023-12-22 02:32:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:40,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:40,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:40,159 INFO L87 Difference]: Start difference. First operand 2358 states and 3140 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:40,335 INFO L93 Difference]: Finished difference Result 4825 states and 6472 transitions. [2023-12-22 02:32:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:40,344 INFO L225 Difference]: With dead ends: 4825 [2023-12-22 02:32:40,344 INFO L226 Difference]: Without dead ends: 2486 [2023-12-22 02:32:40,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:40,354 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 92 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:40,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1288 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-22 02:32:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2362. [2023-12-22 02:32:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2235 states have (on average 1.3355704697986577) internal successors, (2985), 2238 states have internal predecessors, (2985), 69 states have call successors, (69), 57 states have call predecessors, (69), 57 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-22 02:32:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3122 transitions. [2023-12-22 02:32:40,466 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3122 transitions. Word has length 152 [2023-12-22 02:32:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:40,466 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 3122 transitions. [2023-12-22 02:32:40,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3122 transitions. [2023-12-22 02:32:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:40,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:40,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:40,472 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 (39)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:40,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:40,672 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:40,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1363083408, now seen corresponding path program 1 times [2023-12-22 02:32:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:40,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307895454] [2023-12-22 02:32:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:40,673 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 [2023-12-22 02:32:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:40,674 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-22 02:32:40,676 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 (40)] Waiting until timeout for monitored process [2023-12-22 02:32:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:40,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:40,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:40,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:40,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:40,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307895454] [2023-12-22 02:32:40,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307895454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:40,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:40,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466287378] [2023-12-22 02:32:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:40,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:40,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:40,809 INFO L87 Difference]: Start difference. First operand 2362 states and 3122 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:40,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:40,982 INFO L93 Difference]: Finished difference Result 4821 states and 6420 transitions. [2023-12-22 02:32:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:40,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:40,988 INFO L225 Difference]: With dead ends: 4821 [2023-12-22 02:32:40,988 INFO L226 Difference]: Without dead ends: 2478 [2023-12-22 02:32:40,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:40,996 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 83 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:40,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1289 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2023-12-22 02:32:41,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2366. [2023-12-22 02:32:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2239 states have (on average 1.325145154086646) internal successors, (2967), 2242 states have internal predecessors, (2967), 69 states have call successors, (69), 57 states have call predecessors, (69), 57 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-22 02:32:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3104 transitions. [2023-12-22 02:32:41,162 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3104 transitions. Word has length 152 [2023-12-22 02:32:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:41,162 INFO L495 AbstractCegarLoop]: Abstraction has 2366 states and 3104 transitions. [2023-12-22 02:32:41,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3104 transitions. [2023-12-22 02:32:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:41,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:41,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:41,172 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 (40)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:41,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:41,370 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:41,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash -577498606, now seen corresponding path program 1 times [2023-12-22 02:32:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073049488] [2023-12-22 02:32:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:41,371 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 [2023-12-22 02:32:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:41,372 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-22 02:32:41,388 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 (41)] Waiting until timeout for monitored process [2023-12-22 02:32:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:41,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:41,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:41,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:41,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:41,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073049488] [2023-12-22 02:32:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073049488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:41,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141844853] [2023-12-22 02:32:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:41,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:41,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:41,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:41,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:41,521 INFO L87 Difference]: Start difference. First operand 2366 states and 3104 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:41,694 INFO L93 Difference]: Finished difference Result 4817 states and 6368 transitions. [2023-12-22 02:32:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:41,699 INFO L225 Difference]: With dead ends: 4817 [2023-12-22 02:32:41,699 INFO L226 Difference]: Without dead ends: 2470 [2023-12-22 02:32:41,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:41,703 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 74 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:41,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1290 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2023-12-22 02:32:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2370. [2023-12-22 02:32:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2243 states have (on average 1.3147570218457423) internal successors, (2949), 2246 states have internal predecessors, (2949), 69 states have call successors, (69), 57 states have call predecessors, (69), 57 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-22 02:32:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3086 transitions. [2023-12-22 02:32:41,832 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3086 transitions. Word has length 152 [2023-12-22 02:32:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:41,832 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 3086 transitions. [2023-12-22 02:32:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3086 transitions. [2023-12-22 02:32:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:41,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:41,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:41,838 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 (41)] Ended with exit code 0 [2023-12-22 02:32:42,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:42,038 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:42,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1758893904, now seen corresponding path program 1 times [2023-12-22 02:32:42,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:42,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312015745] [2023-12-22 02:32:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:42,039 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 [2023-12-22 02:32:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:42,040 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-22 02:32:42,042 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 (42)] Waiting until timeout for monitored process [2023-12-22 02:32:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:42,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:42,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:42,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:42,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:42,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312015745] [2023-12-22 02:32:42,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312015745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:42,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:42,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:42,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114321923] [2023-12-22 02:32:42,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:42,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:42,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:42,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:42,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:42,199 INFO L87 Difference]: Start difference. First operand 2370 states and 3086 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:42,367 INFO L93 Difference]: Finished difference Result 4813 states and 6316 transitions. [2023-12-22 02:32:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:42,372 INFO L225 Difference]: With dead ends: 4813 [2023-12-22 02:32:42,372 INFO L226 Difference]: Without dead ends: 2462 [2023-12-22 02:32:42,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:42,376 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 65 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:42,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1291 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2023-12-22 02:32:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2374. [2023-12-22 02:32:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2247 states have (on average 1.3044058744993325) internal successors, (2931), 2250 states have internal predecessors, (2931), 69 states have call successors, (69), 57 states have call predecessors, (69), 57 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-22 02:32:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3068 transitions. [2023-12-22 02:32:42,486 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3068 transitions. Word has length 152 [2023-12-22 02:32:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:42,486 INFO L495 AbstractCegarLoop]: Abstraction has 2374 states and 3068 transitions. [2023-12-22 02:32:42,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3068 transitions. [2023-12-22 02:32:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:42,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:42,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:42,492 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 (42)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:42,692 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:42,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 701055826, now seen corresponding path program 1 times [2023-12-22 02:32:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:42,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35571751] [2023-12-22 02:32:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:42,693 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 [2023-12-22 02:32:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:42,694 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-22 02:32:42,694 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 (43)] Waiting until timeout for monitored process [2023-12-22 02:32:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:42,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:42,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:42,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:42,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:42,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35571751] [2023-12-22 02:32:42,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35571751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:42,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:42,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:32:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433108207] [2023-12-22 02:32:42,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:42,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:42,880 INFO L87 Difference]: Start difference. First operand 2374 states and 3068 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:43,142 INFO L93 Difference]: Finished difference Result 6899 states and 8936 transitions. [2023-12-22 02:32:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:43,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:43,150 INFO L225 Difference]: With dead ends: 6899 [2023-12-22 02:32:43,151 INFO L226 Difference]: Without dead ends: 4544 [2023-12-22 02:32:43,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:43,154 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 391 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:43,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 886 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2023-12-22 02:32:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4538. [2023-12-22 02:32:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 4299 states have (on average 1.2949523144917423) internal successors, (5567), 4303 states have internal predecessors, (5567), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 5823 transitions. [2023-12-22 02:32:43,334 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 5823 transitions. Word has length 152 [2023-12-22 02:32:43,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:43,334 INFO L495 AbstractCegarLoop]: Abstraction has 4538 states and 5823 transitions. [2023-12-22 02:32:43,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 5823 transitions. [2023-12-22 02:32:43,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:43,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:43,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:43,346 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 (43)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:43,540 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:43,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash -235971373, now seen corresponding path program 1 times [2023-12-22 02:32:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:43,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931200572] [2023-12-22 02:32:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:43,541 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 [2023-12-22 02:32:43,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:43,542 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-22 02:32:43,544 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 (44)] Waiting until timeout for monitored process [2023-12-22 02:32:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:43,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:43,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:43,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:43,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:43,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931200572] [2023-12-22 02:32:43,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931200572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:43,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336775909] [2023-12-22 02:32:43,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:43,724 INFO L87 Difference]: Start difference. First operand 4538 states and 5823 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:44,020 INFO L93 Difference]: Finished difference Result 10017 states and 13000 transitions. [2023-12-22 02:32:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:44,028 INFO L225 Difference]: With dead ends: 10017 [2023-12-22 02:32:44,028 INFO L226 Difference]: Without dead ends: 5498 [2023-12-22 02:32:44,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:44,033 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 56 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:44,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1305 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:44,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2023-12-22 02:32:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 4586. [2023-12-22 02:32:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4586 states, 4347 states have (on average 1.286634460547504) internal successors, (5593), 4351 states have internal predecessors, (5593), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4586 states to 4586 states and 5849 transitions. [2023-12-22 02:32:44,237 INFO L78 Accepts]: Start accepts. Automaton has 4586 states and 5849 transitions. Word has length 152 [2023-12-22 02:32:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:44,237 INFO L495 AbstractCegarLoop]: Abstraction has 4586 states and 5849 transitions. [2023-12-22 02:32:44,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4586 states and 5849 transitions. [2023-12-22 02:32:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:44,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:44,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:44,243 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 (44)] Ended with exit code 0 [2023-12-22 02:32:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:44,440 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1981659025, now seen corresponding path program 1 times [2023-12-22 02:32:44,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:44,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94318444] [2023-12-22 02:32:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:44,441 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 [2023-12-22 02:32:44,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:44,442 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-12-22 02:32:44,451 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 (45)] Waiting until timeout for monitored process [2023-12-22 02:32:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:44,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:44,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:44,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:44,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94318444] [2023-12-22 02:32:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94318444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:44,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:44,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123986199] [2023-12-22 02:32:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:44,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:44,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:44,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:44,583 INFO L87 Difference]: Start difference. First operand 4586 states and 5849 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:44,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:44,857 INFO L93 Difference]: Finished difference Result 9265 states and 11913 transitions. [2023-12-22 02:32:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:44,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:44,864 INFO L225 Difference]: With dead ends: 9265 [2023-12-22 02:32:44,864 INFO L226 Difference]: Without dead ends: 4698 [2023-12-22 02:32:44,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:44,867 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 38 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:44,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1293 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2023-12-22 02:32:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4594. [2023-12-22 02:32:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4594 states, 4355 states have (on average 1.27646383467279) internal successors, (5559), 4359 states have internal predecessors, (5559), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 5815 transitions. [2023-12-22 02:32:45,042 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 5815 transitions. Word has length 152 [2023-12-22 02:32:45,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:45,042 INFO L495 AbstractCegarLoop]: Abstraction has 4594 states and 5815 transitions. [2023-12-22 02:32:45,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 5815 transitions. [2023-12-22 02:32:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:45,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:45,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:45,049 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 (45)] Ended with exit code 0 [2023-12-22 02:32:45,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:45,244 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:45,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1249691599, now seen corresponding path program 1 times [2023-12-22 02:32:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529187882] [2023-12-22 02:32:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:45,245 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 [2023-12-22 02:32:45,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:45,246 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-22 02:32:45,248 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 (46)] Waiting until timeout for monitored process [2023-12-22 02:32:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:45,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:45,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:45,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:45,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529187882] [2023-12-22 02:32:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529187882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101977829] [2023-12-22 02:32:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:45,395 INFO L87 Difference]: Start difference. First operand 4594 states and 5815 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:45,661 INFO L93 Difference]: Finished difference Result 9257 states and 11813 transitions. [2023-12-22 02:32:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:45,668 INFO L225 Difference]: With dead ends: 9257 [2023-12-22 02:32:45,668 INFO L226 Difference]: Without dead ends: 4682 [2023-12-22 02:32:45,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:45,673 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 29 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:45,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1294 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2023-12-22 02:32:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4602. [2023-12-22 02:32:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 4363 states have (on average 1.2663305065322026) internal successors, (5525), 4367 states have internal predecessors, (5525), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 5781 transitions. [2023-12-22 02:32:45,921 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 5781 transitions. Word has length 152 [2023-12-22 02:32:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:45,921 INFO L495 AbstractCegarLoop]: Abstraction has 4602 states and 5781 transitions. [2023-12-22 02:32:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 5781 transitions. [2023-12-22 02:32:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:45,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:45,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:45,927 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 (46)] Ended with exit code 0 [2023-12-22 02:32:46,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:46,123 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:46,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1083701039, now seen corresponding path program 1 times [2023-12-22 02:32:46,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:46,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472570002] [2023-12-22 02:32:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:46,124 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 [2023-12-22 02:32:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:46,125 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-22 02:32:46,126 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 (47)] Waiting until timeout for monitored process [2023-12-22 02:32:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:46,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:46,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:46,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:46,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:46,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472570002] [2023-12-22 02:32:46,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472570002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:46,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:46,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:46,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229115007] [2023-12-22 02:32:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:46,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:46,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:46,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:46,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:46,274 INFO L87 Difference]: Start difference. First operand 4602 states and 5781 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:46,543 INFO L93 Difference]: Finished difference Result 9249 states and 11713 transitions. [2023-12-22 02:32:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:46,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:46,550 INFO L225 Difference]: With dead ends: 9249 [2023-12-22 02:32:46,550 INFO L226 Difference]: Without dead ends: 4666 [2023-12-22 02:32:46,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:46,555 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 20 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:46,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1295 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2023-12-22 02:32:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4610. [2023-12-22 02:32:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4371 states have (on average 1.2562342713337908) internal successors, (5491), 4375 states have internal predecessors, (5491), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 5747 transitions. [2023-12-22 02:32:46,789 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 5747 transitions. Word has length 152 [2023-12-22 02:32:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:46,789 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 5747 transitions. [2023-12-22 02:32:46,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 5747 transitions. [2023-12-22 02:32:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:46,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:46,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:46,795 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 (47)] Ended with exit code 0 [2023-12-22 02:32:46,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:46,994 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:46,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1043026289, now seen corresponding path program 1 times [2023-12-22 02:32:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:46,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841909578] [2023-12-22 02:32:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:46,995 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 [2023-12-22 02:32:46,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:46,996 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-22 02:32:46,996 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 (48)] Waiting until timeout for monitored process [2023-12-22 02:32:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:47,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:47,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:47,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:47,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:47,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841909578] [2023-12-22 02:32:47,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841909578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:47,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:47,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:47,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238089023] [2023-12-22 02:32:47,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:47,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:47,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:47,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:47,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:47,133 INFO L87 Difference]: Start difference. First operand 4610 states and 5747 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:47,398 INFO L93 Difference]: Finished difference Result 9241 states and 11613 transitions. [2023-12-22 02:32:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:47,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:47,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:47,404 INFO L225 Difference]: With dead ends: 9241 [2023-12-22 02:32:47,404 INFO L226 Difference]: Without dead ends: 4650 [2023-12-22 02:32:47,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:47,408 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 11 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:47,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1296 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2023-12-22 02:32:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4618. [2023-12-22 02:32:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 4379 states have (on average 1.246174925782142) internal successors, (5457), 4383 states have internal predecessors, (5457), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 5713 transitions. [2023-12-22 02:32:47,584 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 5713 transitions. Word has length 152 [2023-12-22 02:32:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:47,584 INFO L495 AbstractCegarLoop]: Abstraction has 4618 states and 5713 transitions. [2023-12-22 02:32:47,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 5713 transitions. [2023-12-22 02:32:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:47,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:47,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:47,590 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 (48)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:47,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:47,790 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:47,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1223354897, now seen corresponding path program 1 times [2023-12-22 02:32:47,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:47,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064295653] [2023-12-22 02:32:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:47,791 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 [2023-12-22 02:32:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:47,792 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-12-22 02:32:47,793 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 (49)] Waiting until timeout for monitored process [2023-12-22 02:32:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:47,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:32:47,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:47,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:47,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064295653] [2023-12-22 02:32:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064295653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193080447] [2023-12-22 02:32:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:47,925 INFO L87 Difference]: Start difference. First operand 4618 states and 5713 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:48,196 INFO L93 Difference]: Finished difference Result 9233 states and 11513 transitions. [2023-12-22 02:32:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:48,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:48,203 INFO L225 Difference]: With dead ends: 9233 [2023-12-22 02:32:48,203 INFO L226 Difference]: Without dead ends: 4634 [2023-12-22 02:32:48,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:48,206 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 2 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:48,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1297 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2023-12-22 02:32:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4626. [2023-12-22 02:32:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4387 states have (on average 1.2361522680647368) internal successors, (5423), 4391 states have internal predecessors, (5423), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 5679 transitions. [2023-12-22 02:32:48,381 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 5679 transitions. Word has length 152 [2023-12-22 02:32:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:48,381 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 5679 transitions. [2023-12-22 02:32:48,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 5679 transitions. [2023-12-22 02:32:48,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:48,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:48,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:48,394 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 (49)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:48,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:48,587 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:48,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1143339697, now seen corresponding path program 1 times [2023-12-22 02:32:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:48,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727770507] [2023-12-22 02:32:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:48,588 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 [2023-12-22 02:32:48,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:48,589 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-12-22 02:32:48,590 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 (50)] Waiting until timeout for monitored process [2023-12-22 02:32:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:48,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:32:48,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:48,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:48,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:48,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727770507] [2023-12-22 02:32:48,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727770507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:48,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:48,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:48,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619051222] [2023-12-22 02:32:48,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:48,829 INFO L87 Difference]: Start difference. First operand 4626 states and 5679 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:49,404 INFO L93 Difference]: Finished difference Result 9234 states and 11340 transitions. [2023-12-22 02:32:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:49,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:49,411 INFO L225 Difference]: With dead ends: 9234 [2023-12-22 02:32:49,411 INFO L226 Difference]: Without dead ends: 4626 [2023-12-22 02:32:49,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:49,416 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 535 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:49,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 728 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2023-12-22 02:32:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4626. [2023-12-22 02:32:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4387 states have (on average 1.232961021198997) internal successors, (5409), 4391 states have internal predecessors, (5409), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 5665 transitions. [2023-12-22 02:32:49,593 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 5665 transitions. Word has length 152 [2023-12-22 02:32:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:49,594 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 5665 transitions. [2023-12-22 02:32:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 5665 transitions. [2023-12-22 02:32:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:49,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:49,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:49,599 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 (50)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:49,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:49,796 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:49,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash -719692975, now seen corresponding path program 1 times [2023-12-22 02:32:49,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:49,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265478620] [2023-12-22 02:32:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:49,797 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 [2023-12-22 02:32:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:49,798 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2023-12-22 02:32:49,798 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 (51)] Waiting until timeout for monitored process [2023-12-22 02:32:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:49,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:32:49,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:50,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:50,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:50,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265478620] [2023-12-22 02:32:50,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265478620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:50,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:50,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:50,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475980521] [2023-12-22 02:32:50,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:50,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:50,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:50,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:50,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:50,046 INFO L87 Difference]: Start difference. First operand 4626 states and 5665 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:50,574 INFO L93 Difference]: Finished difference Result 9234 states and 11312 transitions. [2023-12-22 02:32:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:32:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:50,582 INFO L225 Difference]: With dead ends: 9234 [2023-12-22 02:32:50,583 INFO L226 Difference]: Without dead ends: 4626 [2023-12-22 02:32:50,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:32:50,589 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 522 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:50,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 721 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:32:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2023-12-22 02:32:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4626. [2023-12-22 02:32:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4387 states have (on average 1.2297697743332574) internal successors, (5395), 4391 states have internal predecessors, (5395), 128 states have call successors, (128), 109 states have call predecessors, (128), 110 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 5651 transitions. [2023-12-22 02:32:50,778 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 5651 transitions. Word has length 152 [2023-12-22 02:32:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:50,778 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 5651 transitions. [2023-12-22 02:32:50,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 5651 transitions. [2023-12-22 02:32:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:50,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:50,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:50,784 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 (51)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:50,980 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:50,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash -792079533, now seen corresponding path program 1 times [2023-12-22 02:32:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640409680] [2023-12-22 02:32:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:50,981 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 [2023-12-22 02:32:50,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:50,981 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-12-22 02:32:50,996 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 (52)] Waiting until timeout for monitored process [2023-12-22 02:32:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:51,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:32:51,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:51,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:51,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640409680] [2023-12-22 02:32:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640409680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:51,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:51,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669374597] [2023-12-22 02:32:51,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:51,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:32:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:32:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:51,241 INFO L87 Difference]: Start difference. First operand 4626 states and 5651 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:51,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:51,924 INFO L93 Difference]: Finished difference Result 9564 states and 11701 transitions. [2023-12-22 02:32:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:32:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 152 [2023-12-22 02:32:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:51,931 INFO L225 Difference]: With dead ends: 9564 [2023-12-22 02:32:51,931 INFO L226 Difference]: Without dead ends: 4956 [2023-12-22 02:32:51,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:32:51,936 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 640 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:51,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 716 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2023-12-22 02:32:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4876. [2023-12-22 02:32:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4633 states have (on average 1.2158428663932657) internal successors, (5633), 4637 states have internal predecessors, (5633), 128 states have call successors, (128), 113 states have call predecessors, (128), 114 states have return successors, (128), 126 states have call predecessors, (128), 126 states have call successors, (128) [2023-12-22 02:32:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 5889 transitions. [2023-12-22 02:32:52,170 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 5889 transitions. Word has length 152 [2023-12-22 02:32:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:52,171 INFO L495 AbstractCegarLoop]: Abstraction has 4876 states and 5889 transitions. [2023-12-22 02:32:52,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:32:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 5889 transitions. [2023-12-22 02:32:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-22 02:32:52,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:52,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:52,177 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 (52)] Ended with exit code 0 [2023-12-22 02:32:52,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:52,373 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:52,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash -651530923, now seen corresponding path program 1 times [2023-12-22 02:32:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:52,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946178199] [2023-12-22 02:32:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:52,374 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 [2023-12-22 02:32:52,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:52,377 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2023-12-22 02:32:52,378 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 (53)] Waiting until timeout for monitored process [2023-12-22 02:32:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:52,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:52,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:32:52,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:52,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:52,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946178199] [2023-12-22 02:32:52,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946178199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:52,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:52,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:32:52,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677759109] [2023-12-22 02:32:52,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:52,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:52,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:52,686 INFO L87 Difference]: Start difference. First operand 4876 states and 5889 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:32:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:53,155 INFO L93 Difference]: Finished difference Result 14495 states and 17571 transitions. [2023-12-22 02:32:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 152 [2023-12-22 02:32:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:53,171 INFO L225 Difference]: With dead ends: 14495 [2023-12-22 02:32:53,172 INFO L226 Difference]: Without dead ends: 9638 [2023-12-22 02:32:53,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:53,181 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 296 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:53,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 811 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:32:53,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9638 states. [2023-12-22 02:32:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9638 to 9634. [2023-12-22 02:32:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9634 states, 9155 states have (on average 1.2075368651010376) internal successors, (11055), 9165 states have internal predecessors, (11055), 250 states have call successors, (250), 225 states have call predecessors, (250), 228 states have return successors, (252), 244 states have call predecessors, (252), 248 states have call successors, (252) [2023-12-22 02:32:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9634 states to 9634 states and 11557 transitions. [2023-12-22 02:32:53,640 INFO L78 Accepts]: Start accepts. Automaton has 9634 states and 11557 transitions. Word has length 152 [2023-12-22 02:32:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:53,641 INFO L495 AbstractCegarLoop]: Abstraction has 9634 states and 11557 transitions. [2023-12-22 02:32:53,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:32:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 9634 states and 11557 transitions. [2023-12-22 02:32:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-22 02:32:53,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:53,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:53,650 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 (53)] Ended with exit code 0 [2023-12-22 02:32:53,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:53,846 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:53,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash -531431518, now seen corresponding path program 1 times [2023-12-22 02:32:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:53,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255887147] [2023-12-22 02:32:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:53,847 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 [2023-12-22 02:32:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:53,848 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-12-22 02:32:53,849 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 (54)] Waiting until timeout for monitored process [2023-12-22 02:32:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:54,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:32:54,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-22 02:32:54,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:54,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255887147] [2023-12-22 02:32:54,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255887147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:54,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:54,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997586567] [2023-12-22 02:32:54,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:54,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:54,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:54,248 INFO L87 Difference]: Start difference. First operand 9634 states and 11557 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:32:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:55,466 INFO L93 Difference]: Finished difference Result 28624 states and 34292 transitions. [2023-12-22 02:32:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:32:55,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 244 [2023-12-22 02:32:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:55,498 INFO L225 Difference]: With dead ends: 28624 [2023-12-22 02:32:55,498 INFO L226 Difference]: Without dead ends: 19010 [2023-12-22 02:32:55,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:32:55,511 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 608 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:55,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1247 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:32:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19010 states. [2023-12-22 02:32:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19010 to 19006. [2023-12-22 02:32:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19006 states, 18068 states have (on average 1.2020146114677883) internal successors, (21718), 18095 states have internal predecessors, (21718), 481 states have call successors, (481), 433 states have call predecessors, (481), 456 states have return successors, (527), 479 states have call predecessors, (527), 479 states have call successors, (527) [2023-12-22 02:32:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19006 states to 19006 states and 22726 transitions. [2023-12-22 02:32:56,395 INFO L78 Accepts]: Start accepts. Automaton has 19006 states and 22726 transitions. Word has length 244 [2023-12-22 02:32:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:56,396 INFO L495 AbstractCegarLoop]: Abstraction has 19006 states and 22726 transitions. [2023-12-22 02:32:56,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:32:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 19006 states and 22726 transitions. [2023-12-22 02:32:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-22 02:32:56,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:56,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:56,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:56,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:56,609 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:56,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:56,610 INFO L85 PathProgramCache]: Analyzing trace with hash 765023396, now seen corresponding path program 1 times [2023-12-22 02:32:56,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:56,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586766956] [2023-12-22 02:32:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:56,610 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 [2023-12-22 02:32:56,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:56,611 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2023-12-22 02:32:56,612 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 (55)] Waiting until timeout for monitored process [2023-12-22 02:32:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:56,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:32:56,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-22 02:32:56,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:56,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:56,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586766956] [2023-12-22 02:32:56,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586766956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:56,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:56,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:32:56,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058972896] [2023-12-22 02:32:56,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:56,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:32:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:32:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:56,774 INFO L87 Difference]: Start difference. First operand 19006 states and 22726 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:32:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:32:57,735 INFO L93 Difference]: Finished difference Result 37978 states and 45393 transitions. [2023-12-22 02:32:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:32:57,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 244 [2023-12-22 02:32:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:32:57,820 INFO L225 Difference]: With dead ends: 37978 [2023-12-22 02:32:57,821 INFO L226 Difference]: Without dead ends: 18992 [2023-12-22 02:32:57,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:32:57,832 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 459 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:32:57,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 424 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:32:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18992 states. [2023-12-22 02:32:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18992 to 18992. [2023-12-22 02:32:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18992 states, 18057 states have (on average 1.2016392534751066) internal successors, (21698), 18083 states have internal predecessors, (21698), 478 states have call successors, (478), 433 states have call predecessors, (478), 456 states have return successors, (524), 476 states have call predecessors, (524), 476 states have call successors, (524) [2023-12-22 02:32:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18992 states to 18992 states and 22700 transitions. [2023-12-22 02:32:58,696 INFO L78 Accepts]: Start accepts. Automaton has 18992 states and 22700 transitions. Word has length 244 [2023-12-22 02:32:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:32:58,696 INFO L495 AbstractCegarLoop]: Abstraction has 18992 states and 22700 transitions. [2023-12-22 02:32:58,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:32:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 18992 states and 22700 transitions. [2023-12-22 02:32:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-22 02:32:58,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:32:58,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:32:58,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2023-12-22 02:32:58,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:32:58,905 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:32:58,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:32:58,905 INFO L85 PathProgramCache]: Analyzing trace with hash -63851673, now seen corresponding path program 1 times [2023-12-22 02:32:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:32:58,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613342650] [2023-12-22 02:32:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:32:58,906 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 [2023-12-22 02:32:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:32:58,907 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2023-12-22 02:32:58,908 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 (56)] Waiting until timeout for monitored process [2023-12-22 02:32:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:32:59,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:32:59,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:32:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-22 02:32:59,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:32:59,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:32:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613342650] [2023-12-22 02:32:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613342650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:32:59,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:32:59,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:32:59,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204860507] [2023-12-22 02:32:59,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:32:59,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:32:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:32:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:32:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:32:59,287 INFO L87 Difference]: Start difference. First operand 18992 states and 22700 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:33:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:01,460 INFO L93 Difference]: Finished difference Result 55977 states and 66865 transitions. [2023-12-22 02:33:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:33:01,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 246 [2023-12-22 02:33:01,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:01,516 INFO L225 Difference]: With dead ends: 55977 [2023-12-22 02:33:01,516 INFO L226 Difference]: Without dead ends: 37005 [2023-12-22 02:33:01,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:33:01,529 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 603 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:01,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1212 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:33:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37005 states. [2023-12-22 02:33:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37005 to 37001. [2023-12-22 02:33:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37001 states, 35183 states have (on average 1.1986186510530654) internal successors, (42171), 35242 states have internal predecessors, (42171), 921 states have call successors, (921), 833 states have call predecessors, (921), 896 states have return successors, (1055), 927 states have call predecessors, (1055), 919 states have call successors, (1055) [2023-12-22 02:33:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37001 states to 37001 states and 44147 transitions. [2023-12-22 02:33:03,425 INFO L78 Accepts]: Start accepts. Automaton has 37001 states and 44147 transitions. Word has length 246 [2023-12-22 02:33:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:03,426 INFO L495 AbstractCegarLoop]: Abstraction has 37001 states and 44147 transitions. [2023-12-22 02:33:03,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:33:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 37001 states and 44147 transitions. [2023-12-22 02:33:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-22 02:33:03,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:03,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:03,447 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 (56)] Forceful destruction successful, exit code 0 [2023-12-22 02:33:03,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:03,642 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:03,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1471544997, now seen corresponding path program 1 times [2023-12-22 02:33:03,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:03,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523665662] [2023-12-22 02:33:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:03,643 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 [2023-12-22 02:33:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:03,644 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2023-12-22 02:33:03,645 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 (57)] Waiting until timeout for monitored process [2023-12-22 02:33:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:03,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:33:03,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-22 02:33:03,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:03,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523665662] [2023-12-22 02:33:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523665662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:03,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:03,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:33:03,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349244201] [2023-12-22 02:33:03,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:03,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:33:03,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:03,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:33:03,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:03,878 INFO L87 Difference]: Start difference. First operand 37001 states and 44147 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:33:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:05,885 INFO L93 Difference]: Finished difference Result 73969 states and 88238 transitions. [2023-12-22 02:33:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:33:05,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 246 [2023-12-22 02:33:05,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:05,945 INFO L225 Difference]: With dead ends: 73969 [2023-12-22 02:33:05,945 INFO L226 Difference]: Without dead ends: 36988 [2023-12-22 02:33:05,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:05,973 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 457 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:05,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 423 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:33:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36988 states. [2023-12-22 02:33:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36988 to 36988. [2023-12-22 02:33:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36988 states, 35173 states have (on average 1.1984476729309415) internal successors, (42153), 35231 states have internal predecessors, (42153), 918 states have call successors, (918), 833 states have call predecessors, (918), 896 states have return successors, (1052), 924 states have call predecessors, (1052), 916 states have call successors, (1052) [2023-12-22 02:33:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36988 states to 36988 states and 44123 transitions. [2023-12-22 02:33:07,958 INFO L78 Accepts]: Start accepts. Automaton has 36988 states and 44123 transitions. Word has length 246 [2023-12-22 02:33:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:07,958 INFO L495 AbstractCegarLoop]: Abstraction has 36988 states and 44123 transitions. [2023-12-22 02:33:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:33:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 36988 states and 44123 transitions. [2023-12-22 02:33:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-22 02:33:07,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:07,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:07,978 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 (57)] Forceful destruction successful, exit code 0 [2023-12-22 02:33:08,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:08,173 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:08,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1493230946, now seen corresponding path program 1 times [2023-12-22 02:33:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:08,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951729327] [2023-12-22 02:33:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:08,175 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 [2023-12-22 02:33:08,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:08,176 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2023-12-22 02:33:08,176 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 (58)] Waiting until timeout for monitored process [2023-12-22 02:33:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:08,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:33:08,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-22 02:33:08,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:08,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951729327] [2023-12-22 02:33:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951729327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:33:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577964636] [2023-12-22 02:33:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:08,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:33:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:33:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:33:08,564 INFO L87 Difference]: Start difference. First operand 36988 states and 44123 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:33:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:12,527 INFO L93 Difference]: Finished difference Result 108964 states and 129921 transitions. [2023-12-22 02:33:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:33:12,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 248 [2023-12-22 02:33:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:12,639 INFO L225 Difference]: With dead ends: 108964 [2023-12-22 02:33:12,640 INFO L226 Difference]: Without dead ends: 71996 [2023-12-22 02:33:12,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:33:12,667 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 621 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:12,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 850 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:33:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71996 states. [2023-12-22 02:33:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71996 to 71992. [2023-12-22 02:33:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71992 states, 68465 states have (on average 1.196304681223983) internal successors, (81905), 68595 states have internal predecessors, (81905), 1766 states have call successors, (1766), 1601 states have call predecessors, (1766), 1760 states have return successors, (2092), 1796 states have call predecessors, (2092), 1764 states have call successors, (2092) [2023-12-22 02:33:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71992 states to 71992 states and 85763 transitions. [2023-12-22 02:33:16,288 INFO L78 Accepts]: Start accepts. Automaton has 71992 states and 85763 transitions. Word has length 248 [2023-12-22 02:33:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:16,288 INFO L495 AbstractCegarLoop]: Abstraction has 71992 states and 85763 transitions. [2023-12-22 02:33:16,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:33:16,288 INFO L276 IsEmpty]: Start isEmpty. Operand 71992 states and 85763 transitions. [2023-12-22 02:33:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-22 02:33:16,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:16,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:16,322 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 (58)] Ended with exit code 0 [2023-12-22 02:33:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:16,517 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:16,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1129782681, now seen corresponding path program 1 times [2023-12-22 02:33:16,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987289119] [2023-12-22 02:33:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:16,518 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 [2023-12-22 02:33:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:16,519 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2023-12-22 02:33:16,520 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 (59)] Waiting until timeout for monitored process [2023-12-22 02:33:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:16,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:33:16,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-22 02:33:16,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:16,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:16,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987289119] [2023-12-22 02:33:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987289119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:33:16,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066018218] [2023-12-22 02:33:16,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:16,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:33:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:16,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:33:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:33:16,882 INFO L87 Difference]: Start difference. First operand 71992 states and 85763 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:33:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:23,626 INFO L93 Difference]: Finished difference Result 211971 states and 252477 transitions. [2023-12-22 02:33:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:33:23,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 250 [2023-12-22 02:33:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:24,037 INFO L225 Difference]: With dead ends: 211971 [2023-12-22 02:33:24,037 INFO L226 Difference]: Without dead ends: 139999 [2023-12-22 02:33:24,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:33:24,110 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 590 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:24,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1150 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:33:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139999 states. [2023-12-22 02:33:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139999 to 139995. [2023-12-22 02:33:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139995 states, 133137 states have (on average 1.1950321848922538) internal successors, (159103), 133428 states have internal predecessors, (159103), 3401 states have call successors, (3401), 3073 states have call predecessors, (3401), 3456 states have return successors, (4143), 3495 states have call predecessors, (4143), 3399 states have call successors, (4143) [2023-12-22 02:33:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139995 states to 139995 states and 166647 transitions. [2023-12-22 02:33:31,652 INFO L78 Accepts]: Start accepts. Automaton has 139995 states and 166647 transitions. Word has length 250 [2023-12-22 02:33:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:31,653 INFO L495 AbstractCegarLoop]: Abstraction has 139995 states and 166647 transitions. [2023-12-22 02:33:31,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:33:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 139995 states and 166647 transitions. [2023-12-22 02:33:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-22 02:33:31,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:31,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:31,703 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 (59)] Forceful destruction successful, exit code 0 [2023-12-22 02:33:31,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:31,904 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:31,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1212634661, now seen corresponding path program 1 times [2023-12-22 02:33:31,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:31,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636419932] [2023-12-22 02:33:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:31,905 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 [2023-12-22 02:33:31,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:31,906 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2023-12-22 02:33:31,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-12-22 02:33:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:32,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:33:32,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-22 02:33:32,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:32,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636419932] [2023-12-22 02:33:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636419932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:33:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379792964] [2023-12-22 02:33:32,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:32,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:33:32,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:33:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:32,097 INFO L87 Difference]: Start difference. First operand 139995 states and 166647 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:33:39,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:39,346 INFO L93 Difference]: Finished difference Result 279959 states and 333242 transitions. [2023-12-22 02:33:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:33:39,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 250 [2023-12-22 02:33:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:39,766 INFO L225 Difference]: With dead ends: 279959 [2023-12-22 02:33:39,767 INFO L226 Difference]: Without dead ends: 139984 [2023-12-22 02:33:39,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:39,866 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 454 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:39,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 422 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:33:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139984 states. [2023-12-22 02:33:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139984 to 139984. [2023-12-22 02:33:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139984 states, 133129 states have (on average 1.194991324204343) internal successors, (159088), 133419 states have internal predecessors, (159088), 3398 states have call successors, (3398), 3073 states have call predecessors, (3398), 3456 states have return successors, (4140), 3492 states have call predecessors, (4140), 3396 states have call successors, (4140) [2023-12-22 02:33:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139984 states to 139984 states and 166626 transitions. [2023-12-22 02:33:47,341 INFO L78 Accepts]: Start accepts. Automaton has 139984 states and 166626 transitions. Word has length 250 [2023-12-22 02:33:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:47,341 INFO L495 AbstractCegarLoop]: Abstraction has 139984 states and 166626 transitions. [2023-12-22 02:33:47,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:33:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 139984 states and 166626 transitions. [2023-12-22 02:33:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-22 02:33:47,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:47,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:47,398 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 (60)] Ended with exit code 0 [2023-12-22 02:33:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:47,593 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:47,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:47,595 INFO L85 PathProgramCache]: Analyzing trace with hash 130052898, now seen corresponding path program 1 times [2023-12-22 02:33:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972248734] [2023-12-22 02:33:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:47,596 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 [2023-12-22 02:33:47,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:47,597 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2023-12-22 02:33:47,598 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 (61)] Waiting until timeout for monitored process [2023-12-22 02:33:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:47,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:33:47,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-22 02:33:47,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:47,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972248734] [2023-12-22 02:33:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972248734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:47,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:47,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:33:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130250791] [2023-12-22 02:33:47,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:33:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:33:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:33:47,951 INFO L87 Difference]: Start difference. First operand 139984 states and 166626 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:00,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:00,900 INFO L93 Difference]: Finished difference Result 415618 states and 494634 transitions. [2023-12-22 02:34:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:00,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 252 [2023-12-22 02:34:00,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted.