/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 15:18:47,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 15:18:47,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 15:18:47,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 15:18:47,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 15:18:47,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 15:18:47,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 15:18:47,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 15:18:47,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 15:18:47,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 15:18:47,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 15:18:47,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 15:18:47,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 15:18:47,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 15:18:47,644 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 15:18:47,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 15:18:47,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 15:18:47,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 15:18:47,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 15:18:47,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 15:18:47,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 15:18:47,646 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 15:18:47,646 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 15:18:47,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 15:18:47,647 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 15:18:47,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 15:18:47,647 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 15:18:47,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 15:18:47,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 15:18:47,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 15:18:47,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 15:18:47,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:18:47,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 15:18:47,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 15:18:47,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 15:18:47,649 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 15:18:47,649 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 15:18:47,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 15:18:47,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 15:18:47,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 15:18:47,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 15:18:47,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:47,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 15:18:47,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 15:18:47,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 15:18:47,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 15:18:47,837 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 15:18:47,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-04 15:18:48,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 15:18:49,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 15:18:49,215 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-04 15:18:49,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd462e2ab/a8dbf6d5873b47c7a627c967b8819a8f/FLAG8b017cdce [2024-11-04 15:18:49,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd462e2ab/a8dbf6d5873b47c7a627c967b8819a8f [2024-11-04 15:18:49,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 15:18:49,557 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 15:18:49,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 15:18:49,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 15:18:49,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 15:18:49,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:49,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd762b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49, skipping insertion in model container [2024-11-04 15:18:49,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:49,599 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 15:18:49,719 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2024-11-04 15:18:49,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:18:49,870 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 15:18:49,878 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2024-11-04 15:18:49,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:18:49,994 INFO L204 MainTranslator]: Completed translation [2024-11-04 15:18:49,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49 WrapperNode [2024-11-04 15:18:49,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 15:18:49,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 15:18:49,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 15:18:49,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 15:18:50,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,066 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 959 [2024-11-04 15:18:50,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 15:18:50,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 15:18:50,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 15:18:50,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 15:18:50,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,118 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2024-11-04 15:18:50,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 15:18:50,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 15:18:50,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 15:18:50,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 15:18:50,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (1/1) ... [2024-11-04 15:18:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:18:50,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:50,195 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) [2024-11-04 15:18:50,196 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 [2024-11-04 15:18:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 15:18:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-04 15:18:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-04 15:18:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-04 15:18:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 15:18:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 15:18:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 15:18:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 15:18:50,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 15:18:50,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 15:18:50,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 15:18:50,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 15:18:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-04 15:18:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-04 15:18:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-04 15:18:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 15:18:50,381 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 15:18:50,383 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 15:18:50,955 INFO L? ?]: Removed 681 outVars from TransFormulas that were not future-live. [2024-11-04 15:18:50,955 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 15:18:50,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 15:18:50,965 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-04 15:18:50,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:18:50 BoogieIcfgContainer [2024-11-04 15:18:50,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 15:18:50,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 15:18:50,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 15:18:50,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 15:18:50,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:18:49" (1/3) ... [2024-11-04 15:18:50,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e5bdc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:18:50, skipping insertion in model container [2024-11-04 15:18:50,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:18:49" (2/3) ... [2024-11-04 15:18:50,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e5bdc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:18:50, skipping insertion in model container [2024-11-04 15:18:50,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:18:50" (3/3) ... [2024-11-04 15:18:50,974 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-04 15:18:50,985 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 15:18:50,985 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 15:18:51,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 15:18:51,031 INFO L333 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, 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;@211e47e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 15:18:51,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 15:18:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-04 15:18:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-04 15:18:51,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:51,040 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:18:51,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:51,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1919498836, now seen corresponding path program 1 times [2024-11-04 15:18:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52144172] [2024-11-04 15:18:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:51,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:51,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:51,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:51,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-04 15:18:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:51,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 15:18:51,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:18:51,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:18:51,444 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:51,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52144172] [2024-11-04 15:18:51,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [52144172] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:18:51,445 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:18:51,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-04 15:18:51,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363594063] [2024-11-04 15:18:51,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:18:51,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 15:18:51,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:51,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 15:18:51,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 15:18:51,471 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:51,486 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-04 15:18:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 15:18:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 39 [2024-11-04 15:18:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:51,492 INFO L225 Difference]: With dead ends: 77 [2024-11-04 15:18:51,492 INFO L226 Difference]: Without dead ends: 39 [2024-11-04 15:18:51,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 15:18:51,496 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:51,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-04 15:18:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-04 15:18:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-04 15:18:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-04 15:18:51,522 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 39 [2024-11-04 15:18:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:51,523 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-04 15:18:51,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-04 15:18:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-04 15:18:51,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:51,524 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:18:51,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-04 15:18:51,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:51,728 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:51,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1633554172, now seen corresponding path program 1 times [2024-11-04 15:18:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:51,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641516555] [2024-11-04 15:18:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:51,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:51,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:51,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:51,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-04 15:18:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:52,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:18:52,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:18:52,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:18:52,063 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:52,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641516555] [2024-11-04 15:18:52,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [641516555] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:18:52,063 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:18:52,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:18:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136924963] [2024-11-04 15:18:52,063 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:18:52,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:18:52,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:18:52,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:52,065 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:52,089 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-04 15:18:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:18:52,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 39 [2024-11-04 15:18:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:52,091 INFO L225 Difference]: With dead ends: 77 [2024-11-04 15:18:52,091 INFO L226 Difference]: Without dead ends: 42 [2024-11-04 15:18:52,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:52,092 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:52,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-04 15:18:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-04 15:18:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-04 15:18:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-04 15:18:52,099 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-04 15:18:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:52,099 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-04 15:18:52,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-04 15:18:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-04 15:18:52,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:52,100 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-04 15:18:52,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-04 15:18:52,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:52,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:52,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash -682782464, now seen corresponding path program 1 times [2024-11-04 15:18:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:52,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683496413] [2024-11-04 15:18:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:52,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:52,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:52,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:52,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-04 15:18:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:52,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:18:52,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:18:52,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:18:52,592 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:52,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683496413] [2024-11-04 15:18:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1683496413] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:18:52,592 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:18:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:18:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538435999] [2024-11-04 15:18:52,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:18:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:18:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:52,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:18:52,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:52,597 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:52,620 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2024-11-04 15:18:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:18:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 43 [2024-11-04 15:18:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:52,623 INFO L225 Difference]: With dead ends: 77 [2024-11-04 15:18:52,623 INFO L226 Difference]: Without dead ends: 45 [2024-11-04 15:18:52,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:52,624 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:52,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-04 15:18:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-04 15:18:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-04 15:18:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-04 15:18:52,632 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 43 [2024-11-04 15:18:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:52,632 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-04 15:18:52,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-04 15:18:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-04 15:18:52,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:52,635 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-04 15:18:52,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-04 15:18:52,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:52,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:52,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash -374357380, now seen corresponding path program 1 times [2024-11-04 15:18:52,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:52,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919178991] [2024-11-04 15:18:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:52,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:52,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:52,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-04 15:18:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:53,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:18:53,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:18:53,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:18:53,174 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:53,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919178991] [2024-11-04 15:18:53,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [919178991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:18:53,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:18:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:18:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164359995] [2024-11-04 15:18:53,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:18:53,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:18:53,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:18:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:18:53,176 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:53,236 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2024-11-04 15:18:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:18:53,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 47 [2024-11-04 15:18:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:53,237 INFO L225 Difference]: With dead ends: 91 [2024-11-04 15:18:53,237 INFO L226 Difference]: Without dead ends: 53 [2024-11-04 15:18:53,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:18:53,238 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:53,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 179 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-04 15:18:53,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-04 15:18:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-04 15:18:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2024-11-04 15:18:53,243 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 47 [2024-11-04 15:18:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:53,243 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2024-11-04 15:18:53,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2024-11-04 15:18:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-04 15:18:53,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:53,244 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 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] [2024-11-04 15:18:53,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-04 15:18:53,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:53,445 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:53,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1977166964, now seen corresponding path program 2 times [2024-11-04 15:18:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:53,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32197936] [2024-11-04 15:18:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:53,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:53,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:53,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-04 15:18:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:53,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:18:53,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-04 15:18:53,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-04 15:18:53,842 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:53,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32197936] [2024-11-04 15:18:53,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [32197936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:18:53,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:18:53,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:18:53,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501135618] [2024-11-04 15:18:53,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:18:53,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:18:53,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:18:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:18:53,844 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:53,915 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2024-11-04 15:18:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:18:53,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 55 [2024-11-04 15:18:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:53,917 INFO L225 Difference]: With dead ends: 93 [2024-11-04 15:18:53,917 INFO L226 Difference]: Without dead ends: 61 [2024-11-04 15:18:53,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:18:53,918 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:53,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-04 15:18:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-04 15:18:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-04 15:18:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-04 15:18:53,924 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 55 [2024-11-04 15:18:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:53,924 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-04 15:18:53,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:18:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-04 15:18:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-04 15:18:53,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:53,925 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:18:53,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-04 15:18:54,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:54,126 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:54,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash 908574060, now seen corresponding path program 3 times [2024-11-04 15:18:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:54,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946841349] [2024-11-04 15:18:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:54,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:54,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:54,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:54,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-04 15:18:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:54,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-04 15:18:54,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-04 15:18:54,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-04 15:18:55,431 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946841349] [2024-11-04 15:18:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [946841349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:18:55,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:18:55,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-04 15:18:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208629288] [2024-11-04 15:18:55,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:18:55,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:18:55,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:18:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:18:55,433 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 17 states, 15 states have (on average 3.2) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-04 15:18:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:55,735 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2024-11-04 15:18:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-04 15:18:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) Word has length 63 [2024-11-04 15:18:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:55,739 INFO L225 Difference]: With dead ends: 75 [2024-11-04 15:18:55,739 INFO L226 Difference]: Without dead ends: 73 [2024-11-04 15:18:55,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-04 15:18:55,740 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 107 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:55,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 213 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 15:18:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-04 15:18:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-04 15:18:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:18:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-04 15:18:55,752 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 63 [2024-11-04 15:18:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:55,753 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-04 15:18:55,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-04 15:18:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-04 15:18:55,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-04 15:18:55,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:55,754 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 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] [2024-11-04 15:18:55,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-04 15:18:55,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:55,955 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:55,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash -791886709, now seen corresponding path program 1 times [2024-11-04 15:18:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424178446] [2024-11-04 15:18:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:55,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:55,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:55,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:55,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-04 15:18:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:56,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:18:56,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-04 15:18:56,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-04 15:18:56,499 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:56,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424178446] [2024-11-04 15:18:56,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [424178446] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:18:56,499 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:18:56,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:18:56,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926456173] [2024-11-04 15:18:56,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:18:56,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:18:56,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:18:56,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:56,500 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:56,535 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2024-11-04 15:18:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:18:56,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 104 [2024-11-04 15:18:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:56,538 INFO L225 Difference]: With dead ends: 107 [2024-11-04 15:18:56,538 INFO L226 Difference]: Without dead ends: 76 [2024-11-04 15:18:56,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:56,541 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:56,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-04 15:18:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-04 15:18:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.109375) internal successors, (71), 64 states have internal predecessors, (71), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:18:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-11-04 15:18:56,549 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 104 [2024-11-04 15:18:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:56,549 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-11-04 15:18:56,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-11-04 15:18:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-04 15:18:56,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:56,550 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 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] [2024-11-04 15:18:56,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-04 15:18:56,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:56,751 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:56,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 564524551, now seen corresponding path program 1 times [2024-11-04 15:18:56,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:56,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380161] [2024-11-04 15:18:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:56,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:56,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:56,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:56,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-04 15:18:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:57,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:18:57,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-04 15:18:57,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-04 15:18:57,282 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380161] [2024-11-04 15:18:57,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1380161] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:18:57,282 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:18:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:18:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606278483] [2024-11-04 15:18:57,282 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:18:57,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:18:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:18:57,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:57,283 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:57,308 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2024-11-04 15:18:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:18:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2024-11-04 15:18:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:57,311 INFO L225 Difference]: With dead ends: 113 [2024-11-04 15:18:57,311 INFO L226 Difference]: Without dead ends: 79 [2024-11-04 15:18:57,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:57,312 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:57,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-04 15:18:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-04 15:18:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:18:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2024-11-04 15:18:57,320 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 108 [2024-11-04 15:18:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:57,320 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2024-11-04 15:18:57,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2024-11-04 15:18:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-04 15:18:57,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:57,321 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 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] [2024-11-04 15:18:57,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-04 15:18:57,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:57,522 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:57,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash 269302019, now seen corresponding path program 1 times [2024-11-04 15:18:57,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:57,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723139121] [2024-11-04 15:18:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:57,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:57,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:57,524 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:57,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-04 15:18:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:58,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:18:58,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-04 15:18:58,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-04 15:18:58,086 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:58,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723139121] [2024-11-04 15:18:58,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1723139121] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:18:58,087 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:18:58,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:18:58,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938246659] [2024-11-04 15:18:58,087 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:18:58,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:18:58,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:58,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:18:58,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:58,088 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:58,109 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2024-11-04 15:18:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:18:58,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 112 [2024-11-04 15:18:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:58,110 INFO L225 Difference]: With dead ends: 119 [2024-11-04 15:18:58,110 INFO L226 Difference]: Without dead ends: 82 [2024-11-04 15:18:58,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:58,111 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:58,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-04 15:18:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-04 15:18:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.1) internal successors, (77), 70 states have internal predecessors, (77), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:18:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2024-11-04 15:18:58,118 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 112 [2024-11-04 15:18:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:58,118 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2024-11-04 15:18:58,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2024-11-04 15:18:58,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-04 15:18:58,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:58,119 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 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] [2024-11-04 15:18:58,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-04 15:18:58,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:58,324 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:58,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1201909119, now seen corresponding path program 1 times [2024-11-04 15:18:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343636213] [2024-11-04 15:18:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:58,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:58,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:58,326 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:58,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-04 15:18:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:58,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:18:58,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-04 15:18:58,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-04 15:18:58,868 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:58,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343636213] [2024-11-04 15:18:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [343636213] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:18:58,869 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:18:58,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:18:58,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437450435] [2024-11-04 15:18:58,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:18:58,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:18:58,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:18:58,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:58,870 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:58,895 INFO L93 Difference]: Finished difference Result 125 states and 150 transitions. [2024-11-04 15:18:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:18:58,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-04 15:18:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:58,896 INFO L225 Difference]: With dead ends: 125 [2024-11-04 15:18:58,896 INFO L226 Difference]: Without dead ends: 85 [2024-11-04 15:18:58,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:18:58,897 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:58,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:18:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-04 15:18:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-04 15:18:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:18:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2024-11-04 15:18:58,907 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 116 [2024-11-04 15:18:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:58,907 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2024-11-04 15:18:58,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2024-11-04 15:18:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-04 15:18:58,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:58,912 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 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] [2024-11-04 15:18:58,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-04 15:18:59,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:59,113 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:18:59,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:18:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2039319685, now seen corresponding path program 1 times [2024-11-04 15:18:59,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:18:59,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045652831] [2024-11-04 15:18:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:18:59,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:18:59,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:18:59,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:18:59,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-04 15:18:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:18:59,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:18:59,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:18:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-04 15:18:59,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:18:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-04 15:18:59,772 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:18:59,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045652831] [2024-11-04 15:18:59,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1045652831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:18:59,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:18:59,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:18:59,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299732293] [2024-11-04 15:18:59,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:18:59,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:18:59,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:18:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:18:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:18:59,773 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:18:59,865 INFO L93 Difference]: Finished difference Result 136 states and 163 transitions. [2024-11-04 15:18:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:18:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-11-04 15:18:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:18:59,867 INFO L225 Difference]: With dead ends: 136 [2024-11-04 15:18:59,867 INFO L226 Difference]: Without dead ends: 93 [2024-11-04 15:18:59,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:18:59,868 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:18:59,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:18:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-04 15:18:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-04 15:18:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:18:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2024-11-04 15:18:59,875 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 120 [2024-11-04 15:18:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:18:59,875 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2024-11-04 15:18:59,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:18:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2024-11-04 15:18:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-04 15:18:59,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:18:59,876 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 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] [2024-11-04 15:18:59,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:00,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:00,077 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:00,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 366667635, now seen corresponding path program 2 times [2024-11-04 15:19:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:00,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935349590] [2024-11-04 15:19:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:00,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:00,078 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:00,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-04 15:19:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:00,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:00,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-04 15:19:00,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-04 15:19:00,758 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:00,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935349590] [2024-11-04 15:19:00,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1935349590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:00,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:00,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:00,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770710299] [2024-11-04 15:19:00,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:00,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:00,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:00,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:00,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:00,759 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:00,845 INFO L93 Difference]: Finished difference Result 152 states and 179 transitions. [2024-11-04 15:19:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:19:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-04 15:19:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:00,849 INFO L225 Difference]: With dead ends: 152 [2024-11-04 15:19:00,849 INFO L226 Difference]: Without dead ends: 101 [2024-11-04 15:19:00,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:19:00,850 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:00,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 219 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-04 15:19:00,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-04 15:19:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 89 states have internal predecessors, (96), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-04 15:19:00,859 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 128 [2024-11-04 15:19:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:00,859 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-04 15:19:00,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-04 15:19:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-04 15:19:00,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:00,860 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-04 15:19:00,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-04 15:19:01,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:01,061 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:01,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1084146795, now seen corresponding path program 3 times [2024-11-04 15:19:01,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:01,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355292814] [2024-11-04 15:19:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:01,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:01,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:01,063 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:01,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-04 15:19:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:01,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:01,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-04 15:19:01,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-04 15:19:01,776 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:01,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355292814] [2024-11-04 15:19:01,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [355292814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:01,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:01,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590958743] [2024-11-04 15:19:01,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:01,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:01,777 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:01,845 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2024-11-04 15:19:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:19:01,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-04 15:19:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:01,848 INFO L225 Difference]: With dead ends: 168 [2024-11-04 15:19:01,848 INFO L226 Difference]: Without dead ends: 109 [2024-11-04 15:19:01,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:19:01,849 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:01,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:19:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-04 15:19:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-04 15:19:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2024-11-04 15:19:01,863 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 136 [2024-11-04 15:19:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:01,865 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2024-11-04 15:19:01,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2024-11-04 15:19:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-04 15:19:01,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:01,866 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-04 15:19:01,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-04 15:19:02,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:02,067 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:02,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 964601699, now seen corresponding path program 4 times [2024-11-04 15:19:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224387524] [2024-11-04 15:19:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:02,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:02,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:02,069 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:02,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-04 15:19:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:02,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:02,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-04 15:19:02,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-04 15:19:02,872 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224387524] [2024-11-04 15:19:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224387524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:02,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:02,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596015322] [2024-11-04 15:19:02,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:02,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:02,874 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:02,942 INFO L93 Difference]: Finished difference Result 184 states and 211 transitions. [2024-11-04 15:19:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:19:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2024-11-04 15:19:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:02,944 INFO L225 Difference]: With dead ends: 184 [2024-11-04 15:19:02,944 INFO L226 Difference]: Without dead ends: 117 [2024-11-04 15:19:02,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:19:02,945 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:02,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 305 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:19:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-04 15:19:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-04 15:19:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 105 states have (on average 1.0666666666666667) internal successors, (112), 105 states have internal predecessors, (112), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2024-11-04 15:19:02,953 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 144 [2024-11-04 15:19:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:02,953 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2024-11-04 15:19:02,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2024-11-04 15:19:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-04 15:19:02,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:02,954 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-04 15:19:02,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:03,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:03,155 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:03,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1459965605, now seen corresponding path program 5 times [2024-11-04 15:19:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:03,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236576187] [2024-11-04 15:19:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:03,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:03,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:03,157 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:03,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-04 15:19:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:03,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:19:03,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-04 15:19:03,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-04 15:19:04,016 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:04,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236576187] [2024-11-04 15:19:04,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [236576187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:04,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:04,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-04 15:19:04,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469956264] [2024-11-04 15:19:04,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:04,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:19:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:19:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:19:04,017 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:04,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:04,306 INFO L93 Difference]: Finished difference Result 208 states and 239 transitions. [2024-11-04 15:19:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:19:04,307 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 152 [2024-11-04 15:19:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:04,308 INFO L225 Difference]: With dead ends: 208 [2024-11-04 15:19:04,308 INFO L226 Difference]: Without dead ends: 133 [2024-11-04 15:19:04,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-04 15:19:04,309 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:04,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 347 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-04 15:19:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-04 15:19:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 121 states have (on average 1.0661157024793388) internal successors, (129), 121 states have internal predecessors, (129), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2024-11-04 15:19:04,319 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 152 [2024-11-04 15:19:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:04,319 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2024-11-04 15:19:04,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2024-11-04 15:19:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-04 15:19:04,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:04,320 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-04 15:19:04,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:04,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:04,521 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:04,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:04,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1142035881, now seen corresponding path program 6 times [2024-11-04 15:19:04,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:04,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555314490] [2024-11-04 15:19:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:04,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:04,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:04,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-04 15:19:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:05,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:19:05,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-04 15:19:05,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-04 15:19:05,473 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555314490] [2024-11-04 15:19:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1555314490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:05,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:05,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-04 15:19:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965266788] [2024-11-04 15:19:05,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:05,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:19:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:19:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:19:05,475 INFO L87 Difference]: Start difference. First operand 133 states and 149 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:19:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:05,699 INFO L93 Difference]: Finished difference Result 267 states and 306 transitions. [2024-11-04 15:19:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:19:05,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 156 [2024-11-04 15:19:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:05,700 INFO L225 Difference]: With dead ends: 267 [2024-11-04 15:19:05,700 INFO L226 Difference]: Without dead ends: 149 [2024-11-04 15:19:05,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-04 15:19:05,701 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:05,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 442 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-04 15:19:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-04 15:19:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 137 states have (on average 1.0656934306569343) internal successors, (146), 137 states have internal predecessors, (146), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 166 transitions. [2024-11-04 15:19:05,710 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 166 transitions. Word has length 156 [2024-11-04 15:19:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:05,710 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 166 transitions. [2024-11-04 15:19:05,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:19:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 166 transitions. [2024-11-04 15:19:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-04 15:19:05,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:05,712 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-04 15:19:05,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-04 15:19:05,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:05,913 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:05,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash 803876827, now seen corresponding path program 7 times [2024-11-04 15:19:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940283992] [2024-11-04 15:19:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:05,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:05,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:05,915 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:05,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-04 15:19:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:06,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:19:06,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-11-04 15:19:06,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-11-04 15:19:06,884 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940283992] [2024-11-04 15:19:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1940283992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:06,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-04 15:19:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625858758] [2024-11-04 15:19:06,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:06,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:19:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:19:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:19:06,888 INFO L87 Difference]: Start difference. First operand 149 states and 166 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:19:07,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:07,127 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-11-04 15:19:07,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:19:07,127 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 160 [2024-11-04 15:19:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:07,128 INFO L225 Difference]: With dead ends: 269 [2024-11-04 15:19:07,128 INFO L226 Difference]: Without dead ends: 165 [2024-11-04 15:19:07,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-04 15:19:07,129 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:07,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 562 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:07,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-04 15:19:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-04 15:19:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 153 states have (on average 1.065359477124183) internal successors, (163), 153 states have internal predecessors, (163), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 183 transitions. [2024-11-04 15:19:07,139 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 183 transitions. Word has length 160 [2024-11-04 15:19:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:07,139 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 183 transitions. [2024-11-04 15:19:07,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-04 15:19:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 183 transitions. [2024-11-04 15:19:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-04 15:19:07,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:07,140 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 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] [2024-11-04 15:19:07,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-04 15:19:07,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:07,340 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:07,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:07,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1500550111, now seen corresponding path program 8 times [2024-11-04 15:19:07,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:07,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125750888] [2024-11-04 15:19:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:07,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:07,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:07,343 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:07,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-04 15:19:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:08,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:19:08,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-04 15:19:08,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2024-11-04 15:19:08,334 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125750888] [2024-11-04 15:19:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [125750888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:08,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:08,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-04 15:19:08,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019979469] [2024-11-04 15:19:08,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:08,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:19:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:19:08,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:19:08,335 INFO L87 Difference]: Start difference. First operand 165 states and 183 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:08,607 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2024-11-04 15:19:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:19:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 164 [2024-11-04 15:19:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:08,608 INFO L225 Difference]: With dead ends: 272 [2024-11-04 15:19:08,608 INFO L226 Difference]: Without dead ends: 181 [2024-11-04 15:19:08,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-04 15:19:08,609 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:08,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-04 15:19:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-04 15:19:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 169 states have (on average 1.0650887573964498) internal successors, (180), 169 states have internal predecessors, (180), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2024-11-04 15:19:08,619 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 164 [2024-11-04 15:19:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:08,620 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2024-11-04 15:19:08,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2024-11-04 15:19:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-04 15:19:08,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:08,621 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 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] [2024-11-04 15:19:08,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:08,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:08,821 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:08,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:08,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2010039461, now seen corresponding path program 9 times [2024-11-04 15:19:08,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548667661] [2024-11-04 15:19:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:08,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:08,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:08,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-04 15:19:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:09,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:19:09,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-04 15:19:09,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-11-04 15:19:09,876 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:09,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548667661] [2024-11-04 15:19:09,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1548667661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:09,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:09,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-04 15:19:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18944395] [2024-11-04 15:19:09,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:09,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:19:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:09,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:19:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:19:09,877 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:10,092 INFO L93 Difference]: Finished difference Result 304 states and 341 transitions. [2024-11-04 15:19:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:19:10,093 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2024-11-04 15:19:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:10,094 INFO L225 Difference]: With dead ends: 304 [2024-11-04 15:19:10,094 INFO L226 Difference]: Without dead ends: 197 [2024-11-04 15:19:10,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-04 15:19:10,095 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:10,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 390 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-04 15:19:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-04 15:19:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 185 states have (on average 1.0648648648648649) internal successors, (197), 185 states have internal predecessors, (197), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 217 transitions. [2024-11-04 15:19:10,105 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 217 transitions. Word has length 168 [2024-11-04 15:19:10,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:10,106 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 217 transitions. [2024-11-04 15:19:10,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:10,106 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 217 transitions. [2024-11-04 15:19:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-04 15:19:10,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:10,106 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 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] [2024-11-04 15:19:10,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:10,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:10,307 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:10,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash -952499241, now seen corresponding path program 10 times [2024-11-04 15:19:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:10,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501972931] [2024-11-04 15:19:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:10,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:10,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:10,309 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:10,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-04 15:19:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:11,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:19:11,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-04 15:19:11,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-04 15:19:11,327 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501972931] [2024-11-04 15:19:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1501972931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:11,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:11,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-04 15:19:11,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946015756] [2024-11-04 15:19:11,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:11,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:19:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:19:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:19:11,329 INFO L87 Difference]: Start difference. First operand 197 states and 217 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:11,554 INFO L93 Difference]: Finished difference Result 336 states and 375 transitions. [2024-11-04 15:19:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:19:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 172 [2024-11-04 15:19:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:11,555 INFO L225 Difference]: With dead ends: 336 [2024-11-04 15:19:11,555 INFO L226 Difference]: Without dead ends: 213 [2024-11-04 15:19:11,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-04 15:19:11,556 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:11,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-04 15:19:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-04 15:19:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 201 states have (on average 1.064676616915423) internal successors, (214), 201 states have internal predecessors, (214), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 15:19:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2024-11-04 15:19:11,568 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 172 [2024-11-04 15:19:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:11,568 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2024-11-04 15:19:11,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-04 15:19:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2024-11-04 15:19:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-04 15:19:11,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:11,569 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2024-11-04 15:19:11,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-04 15:19:11,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:11,769 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:11,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash 197516755, now seen corresponding path program 11 times [2024-11-04 15:19:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:11,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822176929] [2024-11-04 15:19:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:11,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:11,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:11,771 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:11,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-04 15:19:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:12,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-04 15:19:12,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 12 proven. 49 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-04 15:19:13,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-04 15:19:15,574 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822176929] [2024-11-04 15:19:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [822176929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:15,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:15,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2024-11-04 15:19:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407317802] [2024-11-04 15:19:15,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:15,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-04 15:19:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:15,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-04 15:19:15,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-11-04 15:19:15,576 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 26 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-04 15:19:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:16,595 INFO L93 Difference]: Finished difference Result 409 states and 447 transitions. [2024-11-04 15:19:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-04 15:19:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 176 [2024-11-04 15:19:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:16,597 INFO L225 Difference]: With dead ends: 409 [2024-11-04 15:19:16,597 INFO L226 Difference]: Without dead ends: 407 [2024-11-04 15:19:16,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2024-11-04 15:19:16,598 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 207 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:16,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 562 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-04 15:19:16,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-04 15:19:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 346. [2024-11-04 15:19:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 329 states have (on average 1.0638297872340425) internal successors, (350), 329 states have internal predecessors, (350), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-04 15:19:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 380 transitions. [2024-11-04 15:19:16,620 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 380 transitions. Word has length 176 [2024-11-04 15:19:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:16,621 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 380 transitions. [2024-11-04 15:19:16,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-04 15:19:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 380 transitions. [2024-11-04 15:19:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-04 15:19:16,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:16,622 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:19:16,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-04 15:19:16,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:16,823 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:16,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1897711676, now seen corresponding path program 12 times [2024-11-04 15:19:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:16,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119786517] [2024-11-04 15:19:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:16,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:16,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:16,825 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:19:16,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-04 15:19:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:18,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 163 conjuncts are in the unsatisfiable core [2024-11-04 15:19:18,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 72 proven. 679 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-04 15:19:22,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:32,570 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse13 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse24 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_15~0#1|)) (.cse35 (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_109~0#1|)))))))))))) (.cse36 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_110~0#1|))) (let ((.cse32 (and (or .cse35 (forall ((v_subst_2 (_ BitVec 8))) (or (= .cse36 ((_ zero_extend 24) v_subst_2)) (= (_ bv0 8) v_subst_2)))) (forall ((v_subst_1 (_ BitVec 8))) (or (not (= ((_ zero_extend 24) v_subst_1) .cse36)) (= (_ bv0 8) v_subst_1))))) (.cse33 (forall ((|v_ULTIMATE.start_main_~var_115_arg_0~0#1_67| (_ BitVec 8)) (|ULTIMATE.start_main_~state_85~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_107_arg_1~0#1_66| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_88_arg_1~0#1_66| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_88_arg_1~0#1_66|) ((_ zero_extend 24) |ULTIMATE.start_main_~state_85~0#1|))))))) (_ bv255 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_107_arg_1~0#1_66|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_115_arg_0~0#1_67|))))))))) (.cse34 (forall ((|v_ULTIMATE.start_main_~var_100_arg_1~0#1_65| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_100_arg_1~0#1_65|))) .cse24))) (_ bv0 32)))))) (let ((.cse20 (or .cse32 .cse33 .cse34 (forall ((|v_ULTIMATE.start_main_~var_450_arg_1~0#1_43| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_450_arg_1~0#1_43|))) .cse24))) (_ bv0 32))))) (.cse18 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_11~0#1|)) (.cse19 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse24 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_27~0#1|))))) (.cse21 (and .cse35 (not (= (_ bv0 32) .cse36)))) (.cse27 (or .cse32 .cse33 .cse34 (forall ((|v_ULTIMATE.start_main_~var_450_arg_2~0#1_43| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_450_arg_2~0#1_43|))) .cse24)))))))) (let ((.cse7 (and (or (forall ((|v_ULTIMATE.start_main_~var_115_arg_0~0#1_67| (_ BitVec 8)) (|ULTIMATE.start_main_~state_85~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_94_arg_0~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_107_arg_1~0#1_66| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_58_arg_0~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_60_arg_1~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_450_arg_2~0#1_43| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_88_arg_1~0#1_66| (_ BitVec 8))) (let ((.cse31 ((_ zero_extend 24) |ULTIMATE.start_main_~state_85~0#1|)) (.cse30 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_450_arg_2~0#1_43|))) .cse24))))) (or (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse24 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_60_arg_1~0#1_65|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_58_arg_0~0#1_65|) (_ bv1 32)))))))))) .cse13)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse30 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_94_arg_0~0#1_65|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse31)))))))))))))))))))))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_88_arg_1~0#1_66|) .cse31)))))) (_ bv255 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_107_arg_1~0#1_66|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_115_arg_0~0#1_67|))))))) (= (_ bv0 32) .cse30)))) .cse21) .cse27)) (.cse8 (and .cse27 (or (forall ((|v_ULTIMATE.start_main_~var_115_arg_0~0#1_67| (_ BitVec 8)) (|ULTIMATE.start_main_~state_85~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_94_arg_0~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_107_arg_1~0#1_66| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_450_arg_2~0#1_43| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_88_arg_1~0#1_66| (_ BitVec 8))) (let ((.cse29 ((_ zero_extend 24) |ULTIMATE.start_main_~state_85~0#1|)) (.cse28 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_450_arg_2~0#1_43|))) .cse24))))) (or (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse28 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_94_arg_0~0#1_65|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse29)))))))))))))))) .cse24))))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_88_arg_1~0#1_66|) .cse29)))))) (_ bv255 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_107_arg_1~0#1_66|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_115_arg_0~0#1_67|))))))) (= (_ bv0 32) .cse28)))) .cse21))) (.cse10 (bvsge ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse18 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_184~0#1|)))))))) .cse19)) (.cse15 (= (_ bv0 8) |c_ULTIMATE.start_main_~input_9~0#1|)) (.cse17 (forall ((|v_ULTIMATE.start_main_~var_442_arg_1~0#1_44| (_ BitVec 8))) (bvsge ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse18 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_442_arg_1~0#1_44|)))))) .cse19))) (.cse3 (and (or (forall ((|v_ULTIMATE.start_main_~var_115_arg_0~0#1_67| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_450_arg_1~0#1_43| (_ BitVec 8)) (|ULTIMATE.start_main_~state_85~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_94_arg_0~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_107_arg_1~0#1_66| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_88_arg_1~0#1_66| (_ BitVec 8))) (let ((.cse25 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_450_arg_1~0#1_43|))) .cse24)))) (.cse26 ((_ zero_extend 24) |ULTIMATE.start_main_~state_85~0#1|))) (or (= .cse25 (_ bv0 32)) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_88_arg_1~0#1_66|) .cse26)))))) (_ bv255 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_107_arg_1~0#1_66|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_115_arg_0~0#1_67|))))))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse25 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_94_arg_0~0#1_65|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse26)))))))))))))))) .cse24)))))))) .cse21) .cse20)) (.cse4 (and .cse20 (or .cse21 (forall ((|v_ULTIMATE.start_main_~var_115_arg_0~0#1_67| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_450_arg_1~0#1_43| (_ BitVec 8)) (|ULTIMATE.start_main_~state_85~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_94_arg_0~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_107_arg_1~0#1_66| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_58_arg_0~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_60_arg_1~0#1_65| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_88_arg_1~0#1_66| (_ BitVec 8))) (let ((.cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_450_arg_1~0#1_43|))) .cse24)))) (.cse23 ((_ zero_extend 24) |ULTIMATE.start_main_~state_85~0#1|))) (or (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_60_arg_1~0#1_65|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_58_arg_0~0#1_65|) (_ bv1 32)))))))))) .cse13)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_94_arg_0~0#1_65|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse23))))))))))))))))) .cse24))))) (= .cse22 (_ bv0 32)) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_88_arg_1~0#1_66|) .cse23)))))) (_ bv255 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_107_arg_1~0#1_66|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_115_arg_0~0#1_67|))))))))))))) (.cse16 (forall ((|v_ULTIMATE.start_main_~var_442_arg_1~0#1_44| (_ BitVec 8))) (not (bvsge ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse18 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_442_arg_1~0#1_44|)))))) .cse19)))) (.cse14 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_59~0#1|))) (let ((.cse0 (forall ((|v_ULTIMATE.start_main_~var_188_arg_0~0#1_43| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_188_arg_0~0#1_43|) .cse14))))) (_ bv0 8))))) (.cse5 (forall ((|v_ULTIMATE.start_main_~var_441_arg_2~0#1_43| (_ BitVec 8))) (not (bvsge ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_441_arg_2~0#1_43|))))) .cse18))) .cse19)))) (.cse2 (forall ((|v_ULTIMATE.start_main_~var_441_arg_2~0#1_43| (_ BitVec 8))) (bvsge ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_441_arg_2~0#1_43|))))) .cse18))) .cse19))) (.cse6 (or .cse15 (and (or .cse17 .cse3) (or .cse4 .cse16)))) (.cse1 (not .cse15)) (.cse11 (not .cse10)) (.cse9 (or .cse15 (and (or .cse16 .cse7) (or .cse17 .cse8)))) (.cse12 (forall ((|v_ULTIMATE.start_main_~var_188_arg_0~0#1_43| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_188_arg_0~0#1_43|) .cse14))))) (_ bv0 8))))) (and (or .cse0 (and (or .cse1 (and (or .cse2 .cse3) (or .cse4 .cse5))) .cse6)) (or .cse0 (and (or (and (or .cse5 .cse7) (or .cse2 .cse8)) .cse1) .cse9)) (or (and (or .cse1 (and (or .cse3 .cse10) (or .cse4 .cse11))) .cse6) .cse12) (or (and (or .cse1 (and (or .cse11 .cse7) (or .cse8 .cse10))) .cse9) .cse12)))))))) is different from false [2024-11-04 15:20:19,030 WARN L286 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 333 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)