/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:02:34,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:02:34,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 18:02:34,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:02:34,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:02:34,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:02:34,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:02:34,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:02:34,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:02:34,117 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:02:34,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:02:34,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:02:34,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:02:34,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:02:34,118 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:02:34,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:02:34,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:02:34,119 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 18:02:34,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 18:02:34,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:02:34,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:02:34,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:02:34,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:02:34,121 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 18:02:34,121 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 18:02:34,121 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:02:34,121 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 18:02:34,122 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 18:02:34,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:02:34,122 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:02:34,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:02:34,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:02:34,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:02:34,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:02:34,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:02:34,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:02:34,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:02:34,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:02:34,124 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 18:02:34,124 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 18:02:34,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:02:34,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:02:34,136 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:02:34,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:02:34,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:02:34,137 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 18:02:34,137 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 18:02:34,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:02:34,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:02:34,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:02:34,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:02:34,386 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:02:34,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-12-16 18:02:35,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:02:35,805 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:02:35,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-12-16 18:02:35,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641ec508a/fbdd57df22634444a89a18bf3b53e101/FLAG857151f70 [2023-12-16 18:02:35,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641ec508a/fbdd57df22634444a89a18bf3b53e101 [2023-12-16 18:02:35,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:02:35,834 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:02:35,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:02:35,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:02:35,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:02:35,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:35" (1/1) ... [2023-12-16 18:02:35,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66004223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:35, skipping insertion in model container [2023-12-16 18:02:35,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:35" (1/1) ... [2023-12-16 18:02:35,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:02:35,989 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-12-16 18:02:35,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:02:36,000 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:02:36,031 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-12-16 18:02:36,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:02:36,043 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:02:36,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36 WrapperNode [2023-12-16 18:02:36,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:02:36,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:02:36,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:02:36,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:02:36,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,078 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 316 [2023-12-16 18:02:36,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:02:36,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:02:36,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:02:36,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:02:36,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,107 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 18:02:36,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:02:36,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:02:36,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:02:36,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:02:36,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (1/1) ... [2023-12-16 18:02:36,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:02:36,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:02:36,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 18:02:36,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 18:02:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:02:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 18:02:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:02:36,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:02:36,314 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:02:36,316 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:02:36,573 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:02:36,615 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:02:36,615 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 18:02:36,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:36 BoogieIcfgContainer [2023-12-16 18:02:36,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:02:36,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:02:36,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:02:36,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:02:36,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:02:35" (1/3) ... [2023-12-16 18:02:36,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ccea46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:36, skipping insertion in model container [2023-12-16 18:02:36,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:36" (2/3) ... [2023-12-16 18:02:36,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ccea46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:36, skipping insertion in model container [2023-12-16 18:02:36,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:36" (3/3) ... [2023-12-16 18:02:36,621 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-12-16 18:02:36,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:02:36,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:02:36,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:02:36,663 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a8f5c2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:02:36,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:02:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 76 states have (on average 1.8026315789473684) internal successors, (137), 77 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 18:02:36,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:36,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:36,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:36,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -936899003, now seen corresponding path program 1 times [2023-12-16 18:02:36,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:36,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892908196] [2023-12-16 18:02:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:36,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:36,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:36,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:36,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 18:02:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:36,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 18:02:36,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:36,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:36,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892908196] [2023-12-16 18:02:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892908196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:36,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:36,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 18:02:36,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930129640] [2023-12-16 18:02:36,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 18:02:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:36,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 18:02:36,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 18:02:36,854 INFO L87 Difference]: Start difference. First operand has 78 states, 76 states have (on average 1.8026315789473684) internal successors, (137), 77 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:36,881 INFO L93 Difference]: Finished difference Result 122 states and 208 transitions. [2023-12-16 18:02:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 18:02:36,891 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-16 18:02:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:36,900 INFO L225 Difference]: With dead ends: 122 [2023-12-16 18:02:36,900 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 18:02:36,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 18:02:36,905 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:36,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:36,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 18:02:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-16 18:02:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.76) internal successors, (132), 75 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 132 transitions. [2023-12-16 18:02:36,940 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 132 transitions. Word has length 20 [2023-12-16 18:02:36,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:36,940 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 132 transitions. [2023-12-16 18:02:36,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:36,941 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 132 transitions. [2023-12-16 18:02:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 18:02:36,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:36,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:36,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 18:02:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:37,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:37,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1769720391, now seen corresponding path program 1 times [2023-12-16 18:02:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742433953] [2023-12-16 18:02:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:37,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:37,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 18:02:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:37,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:02:37,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:37,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:37,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:37,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742433953] [2023-12-16 18:02:37,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742433953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:37,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:37,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:02:37,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352322210] [2023-12-16 18:02:37,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:37,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:02:37,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:02:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:37,275 INFO L87 Difference]: Start difference. First operand 76 states and 132 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:37,322 INFO L93 Difference]: Finished difference Result 120 states and 201 transitions. [2023-12-16 18:02:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:02:37,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-16 18:02:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:37,323 INFO L225 Difference]: With dead ends: 120 [2023-12-16 18:02:37,323 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 18:02:37,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:37,324 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:37,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 353 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 18:02:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-16 18:02:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2023-12-16 18:02:37,328 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 20 [2023-12-16 18:02:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:37,328 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2023-12-16 18:02:37,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2023-12-16 18:02:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 18:02:37,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:37,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:37,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:37,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:37,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:37,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:37,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1805949634, now seen corresponding path program 1 times [2023-12-16 18:02:37,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:37,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213085557] [2023-12-16 18:02:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:37,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:37,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:37,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 18:02:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:37,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:02:37,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:38,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:38,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:38,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213085557] [2023-12-16 18:02:38,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213085557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:38,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:02:38,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951886455] [2023-12-16 18:02:38,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:38,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:02:38,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:02:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:02:38,144 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:38,283 INFO L93 Difference]: Finished difference Result 322 states and 497 transitions. [2023-12-16 18:02:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:02:38,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-16 18:02:38,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:38,285 INFO L225 Difference]: With dead ends: 322 [2023-12-16 18:02:38,285 INFO L226 Difference]: Without dead ends: 281 [2023-12-16 18:02:38,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:02:38,286 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 412 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:38,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 512 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:02:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-16 18:02:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 154. [2023-12-16 18:02:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4901960784313726) internal successors, (228), 153 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 228 transitions. [2023-12-16 18:02:38,297 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 228 transitions. Word has length 50 [2023-12-16 18:02:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:38,297 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 228 transitions. [2023-12-16 18:02:38,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 228 transitions. [2023-12-16 18:02:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 18:02:38,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:38,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:38,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 18:02:38,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:38,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:38,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1110513490, now seen corresponding path program 1 times [2023-12-16 18:02:38,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:38,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929247882] [2023-12-16 18:02:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:38,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:38,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:38,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:38,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 18:02:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:38,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:38,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:38,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:38,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:38,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929247882] [2023-12-16 18:02:38,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929247882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:38,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:38,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:38,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396047811] [2023-12-16 18:02:38,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:38,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:38,650 INFO L87 Difference]: Start difference. First operand 154 states and 228 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:38,671 INFO L93 Difference]: Finished difference Result 376 states and 586 transitions. [2023-12-16 18:02:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 18:02:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:38,673 INFO L225 Difference]: With dead ends: 376 [2023-12-16 18:02:38,673 INFO L226 Difference]: Without dead ends: 257 [2023-12-16 18:02:38,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:38,674 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 42 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:38,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 157 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-16 18:02:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-16 18:02:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.5236220472440944) internal successors, (387), 254 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 387 transitions. [2023-12-16 18:02:38,684 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 387 transitions. Word has length 52 [2023-12-16 18:02:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:38,685 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 387 transitions. [2023-12-16 18:02:38,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 387 transitions. [2023-12-16 18:02:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 18:02:38,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:38,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:38,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:38,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:38,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:38,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash -13730052, now seen corresponding path program 1 times [2023-12-16 18:02:38,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:38,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899171414] [2023-12-16 18:02:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:38,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:38,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:38,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:38,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 18:02:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:38,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:02:38,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:39,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:39,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899171414] [2023-12-16 18:02:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899171414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:39,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:02:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709675016] [2023-12-16 18:02:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:39,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:02:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:02:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:39,010 INFO L87 Difference]: Start difference. First operand 255 states and 387 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:39,029 INFO L93 Difference]: Finished difference Result 269 states and 404 transitions. [2023-12-16 18:02:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:02:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 18:02:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:39,031 INFO L225 Difference]: With dead ends: 269 [2023-12-16 18:02:39,031 INFO L226 Difference]: Without dead ends: 267 [2023-12-16 18:02:39,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:39,032 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:39,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 283 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-16 18:02:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2023-12-16 18:02:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.5038167938931297) internal successors, (394), 262 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 394 transitions. [2023-12-16 18:02:39,043 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 394 transitions. Word has length 53 [2023-12-16 18:02:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:39,044 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 394 transitions. [2023-12-16 18:02:39,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 394 transitions. [2023-12-16 18:02:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:02:39,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:39,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:39,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 18:02:39,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:39,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:39,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:39,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1384081850, now seen corresponding path program 1 times [2023-12-16 18:02:39,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:39,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433894776] [2023-12-16 18:02:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:39,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:39,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:39,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:39,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 18:02:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:39,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:39,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:39,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:39,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433894776] [2023-12-16 18:02:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433894776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:39,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:39,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:39,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851608748] [2023-12-16 18:02:39,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:39,372 INFO L87 Difference]: Start difference. First operand 263 states and 394 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:39,384 INFO L93 Difference]: Finished difference Result 503 states and 774 transitions. [2023-12-16 18:02:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:02:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:39,385 INFO L225 Difference]: With dead ends: 503 [2023-12-16 18:02:39,385 INFO L226 Difference]: Without dead ends: 378 [2023-12-16 18:02:39,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:39,386 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:39,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 214 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-16 18:02:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2023-12-16 18:02:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.52) internal successors, (570), 375 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 570 transitions. [2023-12-16 18:02:39,394 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 570 transitions. Word has length 54 [2023-12-16 18:02:39,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:39,394 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 570 transitions. [2023-12-16 18:02:39,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 570 transitions. [2023-12-16 18:02:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:02:39,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:39,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:39,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:39,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:39,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:39,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1612721082, now seen corresponding path program 1 times [2023-12-16 18:02:39,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:39,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854860514] [2023-12-16 18:02:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:39,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:39,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:39,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:39,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 18:02:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:39,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:39,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:39,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:39,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:39,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854860514] [2023-12-16 18:02:39,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854860514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:39,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:39,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088177817] [2023-12-16 18:02:39,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:39,681 INFO L87 Difference]: Start difference. First operand 376 states and 570 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:39,696 INFO L93 Difference]: Finished difference Result 1018 states and 1573 transitions. [2023-12-16 18:02:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:02:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:39,700 INFO L225 Difference]: With dead ends: 1018 [2023-12-16 18:02:39,700 INFO L226 Difference]: Without dead ends: 679 [2023-12-16 18:02:39,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:39,703 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 52 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:39,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 214 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-16 18:02:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2023-12-16 18:02:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.5236686390532543) internal successors, (1030), 676 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1030 transitions. [2023-12-16 18:02:39,716 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1030 transitions. Word has length 54 [2023-12-16 18:02:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:39,716 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1030 transitions. [2023-12-16 18:02:39,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1030 transitions. [2023-12-16 18:02:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:02:39,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:39,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:39,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:39,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:39,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:39,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2056590150, now seen corresponding path program 1 times [2023-12-16 18:02:39,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:39,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939610711] [2023-12-16 18:02:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:39,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:39,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:39,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 18:02:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:39,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:39,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:40,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:40,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:40,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939610711] [2023-12-16 18:02:40,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939610711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:40,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:40,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732712750] [2023-12-16 18:02:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:40,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:40,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:40,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:40,012 INFO L87 Difference]: Start difference. First operand 677 states and 1030 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:40,032 INFO L93 Difference]: Finished difference Result 1885 states and 2890 transitions. [2023-12-16 18:02:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:02:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:40,035 INFO L225 Difference]: With dead ends: 1885 [2023-12-16 18:02:40,035 INFO L226 Difference]: Without dead ends: 1245 [2023-12-16 18:02:40,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:40,036 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 50 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:40,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 216 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-16 18:02:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1243. [2023-12-16 18:02:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 1.5120772946859904) internal successors, (1878), 1242 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1878 transitions. [2023-12-16 18:02:40,055 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1878 transitions. Word has length 54 [2023-12-16 18:02:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:40,055 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 1878 transitions. [2023-12-16 18:02:40,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1878 transitions. [2023-12-16 18:02:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:02:40,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:40,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:40,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:40,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:40,258 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:40,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1349643706, now seen corresponding path program 1 times [2023-12-16 18:02:40,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:40,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825441840] [2023-12-16 18:02:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:40,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:40,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:40,260 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:40,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 18:02:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:40,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:40,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:40,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:40,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:40,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825441840] [2023-12-16 18:02:40,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825441840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:40,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791282888] [2023-12-16 18:02:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:40,349 INFO L87 Difference]: Start difference. First operand 1243 states and 1878 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:40,394 INFO L93 Difference]: Finished difference Result 3511 states and 5308 transitions. [2023-12-16 18:02:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:02:40,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:40,400 INFO L225 Difference]: With dead ends: 3511 [2023-12-16 18:02:40,400 INFO L226 Difference]: Without dead ends: 2305 [2023-12-16 18:02:40,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:40,401 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 48 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:40,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 218 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2023-12-16 18:02:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2303. [2023-12-16 18:02:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 1.4900086880973067) internal successors, (3430), 2302 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3430 transitions. [2023-12-16 18:02:40,436 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3430 transitions. Word has length 54 [2023-12-16 18:02:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:40,436 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 3430 transitions. [2023-12-16 18:02:40,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3430 transitions. [2023-12-16 18:02:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:02:40,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:40,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:40,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-16 18:02:40,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:40,639 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:40,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1652665018, now seen corresponding path program 1 times [2023-12-16 18:02:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:40,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801738994] [2023-12-16 18:02:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:40,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:40,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:40,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 18:02:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:40,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:40,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:40,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:40,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801738994] [2023-12-16 18:02:40,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801738994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:40,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:40,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478099255] [2023-12-16 18:02:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:40,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:40,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:40,753 INFO L87 Difference]: Start difference. First operand 2303 states and 3430 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:40,805 INFO L93 Difference]: Finished difference Result 6547 states and 9712 transitions. [2023-12-16 18:02:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:40,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:02:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:40,817 INFO L225 Difference]: With dead ends: 6547 [2023-12-16 18:02:40,817 INFO L226 Difference]: Without dead ends: 4281 [2023-12-16 18:02:40,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:40,823 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 54 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:40,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 220 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2023-12-16 18:02:40,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4279. [2023-12-16 18:02:40,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.4600280504908836) internal successors, (6246), 4278 states have internal predecessors, (6246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6246 transitions. [2023-12-16 18:02:40,919 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6246 transitions. Word has length 54 [2023-12-16 18:02:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:40,919 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6246 transitions. [2023-12-16 18:02:40,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6246 transitions. [2023-12-16 18:02:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 18:02:40,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:40,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:40,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-16 18:02:41,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:41,123 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:41,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash 824044613, now seen corresponding path program 1 times [2023-12-16 18:02:41,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:41,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727722423] [2023-12-16 18:02:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:41,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:41,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:41,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:41,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 18:02:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:41,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:41,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:41,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:41,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:41,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727722423] [2023-12-16 18:02:41,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727722423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:41,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:41,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727690885] [2023-12-16 18:02:41,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:41,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:41,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:41,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:41,913 INFO L87 Difference]: Start difference. First operand 4279 states and 6246 transitions. Second operand has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:43,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:43,191 INFO L93 Difference]: Finished difference Result 13617 states and 19755 transitions. [2023-12-16 18:02:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 18:02:43,192 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-16 18:02:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:43,214 INFO L225 Difference]: With dead ends: 13617 [2023-12-16 18:02:43,214 INFO L226 Difference]: Without dead ends: 10639 [2023-12-16 18:02:43,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-16 18:02:43,217 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 613 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:43,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 953 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:02:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10639 states. [2023-12-16 18:02:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10639 to 8519. [2023-12-16 18:02:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8519 states, 8518 states have (on average 1.456445174923691) internal successors, (12406), 8518 states have internal predecessors, (12406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8519 states to 8519 states and 12406 transitions. [2023-12-16 18:02:43,465 INFO L78 Accepts]: Start accepts. Automaton has 8519 states and 12406 transitions. Word has length 72 [2023-12-16 18:02:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:43,466 INFO L495 AbstractCegarLoop]: Abstraction has 8519 states and 12406 transitions. [2023-12-16 18:02:43,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8519 states and 12406 transitions. [2023-12-16 18:02:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 18:02:43,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:43,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:43,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:43,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:43,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 595405381, now seen corresponding path program 1 times [2023-12-16 18:02:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848869818] [2023-12-16 18:02:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:43,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:43,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:43,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:43,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 18:02:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:43,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:43,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:43,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:43,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:43,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848869818] [2023-12-16 18:02:43,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848869818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:43,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:43,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:43,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329269212] [2023-12-16 18:02:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:43,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:43,756 INFO L87 Difference]: Start difference. First operand 8519 states and 12406 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:43,844 INFO L93 Difference]: Finished difference Result 14493 states and 21211 transitions. [2023-12-16 18:02:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-16 18:02:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:43,858 INFO L225 Difference]: With dead ends: 14493 [2023-12-16 18:02:43,858 INFO L226 Difference]: Without dead ends: 6011 [2023-12-16 18:02:43,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:43,866 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 47 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 226 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2023-12-16 18:02:44,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6004. [2023-12-16 18:02:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6004 states, 6003 states have (on average 1.4557721139430284) internal successors, (8739), 6003 states have internal predecessors, (8739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 8739 transitions. [2023-12-16 18:02:44,091 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 8739 transitions. Word has length 72 [2023-12-16 18:02:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:44,091 INFO L495 AbstractCegarLoop]: Abstraction has 6004 states and 8739 transitions. [2023-12-16 18:02:44,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 8739 transitions. [2023-12-16 18:02:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 18:02:44,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:44,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:44,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-16 18:02:44,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:44,304 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:44,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash -265147731, now seen corresponding path program 1 times [2023-12-16 18:02:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:44,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348852737] [2023-12-16 18:02:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:44,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:44,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:44,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:44,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 18:02:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:44,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:44,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:44,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:44,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348852737] [2023-12-16 18:02:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348852737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:44,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:44,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169212565] [2023-12-16 18:02:44,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:44,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:44,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:44,407 INFO L87 Difference]: Start difference. First operand 6004 states and 8739 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:44,473 INFO L93 Difference]: Finished difference Result 8984 states and 13085 transitions. [2023-12-16 18:02:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:44,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 18:02:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:44,485 INFO L225 Difference]: With dead ends: 8984 [2023-12-16 18:02:44,485 INFO L226 Difference]: Without dead ends: 3030 [2023-12-16 18:02:44,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:44,490 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 43 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:44,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 211 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2023-12-16 18:02:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3028. [2023-12-16 18:02:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 3027 states have (on average 1.4360753221010902) internal successors, (4347), 3027 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 4347 transitions. [2023-12-16 18:02:44,563 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 4347 transitions. Word has length 74 [2023-12-16 18:02:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:44,563 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 4347 transitions. [2023-12-16 18:02:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 4347 transitions. [2023-12-16 18:02:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 18:02:44,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:44,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:44,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:44,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:44,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:44,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash 740089334, now seen corresponding path program 1 times [2023-12-16 18:02:44,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350159965] [2023-12-16 18:02:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:44,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:44,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:44,770 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:44,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 18:02:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:44,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:44,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:45,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:45,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:45,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350159965] [2023-12-16 18:02:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350159965] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:45,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:45,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258775301] [2023-12-16 18:02:45,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:45,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:45,557 INFO L87 Difference]: Start difference. First operand 3028 states and 4347 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:46,049 INFO L93 Difference]: Finished difference Result 6118 states and 8760 transitions. [2023-12-16 18:02:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 18:02:46,050 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 18:02:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:46,054 INFO L225 Difference]: With dead ends: 6118 [2023-12-16 18:02:46,054 INFO L226 Difference]: Without dead ends: 3140 [2023-12-16 18:02:46,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:02:46,057 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 188 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:46,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 440 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:02:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2023-12-16 18:02:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3042. [2023-12-16 18:02:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 3041 states have (on average 1.434725419269977) internal successors, (4363), 3041 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4363 transitions. [2023-12-16 18:02:46,129 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4363 transitions. Word has length 75 [2023-12-16 18:02:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:46,129 INFO L495 AbstractCegarLoop]: Abstraction has 3042 states and 4363 transitions. [2023-12-16 18:02:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4363 transitions. [2023-12-16 18:02:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 18:02:46,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:46,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:46,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-16 18:02:46,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:46,333 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:46,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1992426602, now seen corresponding path program 1 times [2023-12-16 18:02:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:46,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900517932] [2023-12-16 18:02:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:46,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:46,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:46,349 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:46,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 18:02:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:46,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:46,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:46,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:46,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900517932] [2023-12-16 18:02:46,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900517932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:46,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:46,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405553309] [2023-12-16 18:02:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:46,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:46,454 INFO L87 Difference]: Start difference. First operand 3042 states and 4363 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:46,487 INFO L93 Difference]: Finished difference Result 4534 states and 6513 transitions. [2023-12-16 18:02:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:46,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 18:02:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:46,489 INFO L225 Difference]: With dead ends: 4534 [2023-12-16 18:02:46,489 INFO L226 Difference]: Without dead ends: 1556 [2023-12-16 18:02:46,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:46,493 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 39 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:46,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 196 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-16 18:02:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1554. [2023-12-16 18:02:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1553 states have (on average 1.4108177720540889) internal successors, (2191), 1553 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2191 transitions. [2023-12-16 18:02:46,529 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2191 transitions. Word has length 77 [2023-12-16 18:02:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:46,529 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2191 transitions. [2023-12-16 18:02:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2191 transitions. [2023-12-16 18:02:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 18:02:46,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:46,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:46,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:46,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:46,733 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:46,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2045360857, now seen corresponding path program 1 times [2023-12-16 18:02:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163525180] [2023-12-16 18:02:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:46,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:46,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:46,735 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:46,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 18:02:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:46,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:46,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:47,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:47,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:47,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163525180] [2023-12-16 18:02:47,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163525180] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:47,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:47,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:47,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521961865] [2023-12-16 18:02:47,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:47,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:47,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:47,516 INFO L87 Difference]: Start difference. First operand 1554 states and 2191 transitions. Second operand has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:48,413 INFO L93 Difference]: Finished difference Result 5618 states and 7907 transitions. [2023-12-16 18:02:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 18:02:48,414 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-16 18:02:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:48,418 INFO L225 Difference]: With dead ends: 5618 [2023-12-16 18:02:48,418 INFO L226 Difference]: Without dead ends: 4128 [2023-12-16 18:02:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-16 18:02:48,421 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 575 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:48,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 820 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:02:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2023-12-16 18:02:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3186. [2023-12-16 18:02:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 1.3924646781789638) internal successors, (4435), 3185 states have internal predecessors, (4435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4435 transitions. [2023-12-16 18:02:48,516 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4435 transitions. Word has length 78 [2023-12-16 18:02:48,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:48,516 INFO L495 AbstractCegarLoop]: Abstraction has 3186 states and 4435 transitions. [2023-12-16 18:02:48,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4435 transitions. [2023-12-16 18:02:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 18:02:48,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:48,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:48,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-16 18:02:48,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:48,720 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:48,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash -854497319, now seen corresponding path program 1 times [2023-12-16 18:02:48,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:48,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964122532] [2023-12-16 18:02:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:48,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:48,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:48,722 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:48,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 18:02:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:48,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:48,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:48,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:48,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964122532] [2023-12-16 18:02:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964122532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:48,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:48,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:48,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113274494] [2023-12-16 18:02:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:48,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:48,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:48,808 INFO L87 Difference]: Start difference. First operand 3186 states and 4435 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:48,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:48,839 INFO L93 Difference]: Finished difference Result 4750 states and 6621 transitions. [2023-12-16 18:02:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:48,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-16 18:02:48,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:48,843 INFO L225 Difference]: With dead ends: 4750 [2023-12-16 18:02:48,843 INFO L226 Difference]: Without dead ends: 1628 [2023-12-16 18:02:48,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:48,845 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 35 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:48,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 181 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2023-12-16 18:02:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1626. [2023-12-16 18:02:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 1.3704615384615384) internal successors, (2227), 1625 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2227 transitions. [2023-12-16 18:02:48,875 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2227 transitions. Word has length 80 [2023-12-16 18:02:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:48,875 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 2227 transitions. [2023-12-16 18:02:48,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2227 transitions. [2023-12-16 18:02:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 18:02:48,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:48,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:48,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-16 18:02:49,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:49,079 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:49,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:49,079 INFO L85 PathProgramCache]: Analyzing trace with hash -935590838, now seen corresponding path program 1 times [2023-12-16 18:02:49,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:49,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219773478] [2023-12-16 18:02:49,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:49,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:49,081 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:49,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 18:02:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:49,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:49,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:49,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:49,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219773478] [2023-12-16 18:02:49,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219773478] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:49,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:49,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:49,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234182204] [2023-12-16 18:02:49,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:49,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:49,868 INFO L87 Difference]: Start difference. First operand 1626 states and 2227 transitions. Second operand has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:50,548 INFO L93 Difference]: Finished difference Result 5690 states and 7775 transitions. [2023-12-16 18:02:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 18:02:50,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-16 18:02:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:50,554 INFO L225 Difference]: With dead ends: 5690 [2023-12-16 18:02:50,554 INFO L226 Difference]: Without dead ends: 4128 [2023-12-16 18:02:50,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-16 18:02:50,556 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 685 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:50,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 639 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:02:50,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2023-12-16 18:02:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3330. [2023-12-16 18:02:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3329 states have (on average 1.3538600180234304) internal successors, (4507), 3329 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 4507 transitions. [2023-12-16 18:02:50,629 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 4507 transitions. Word has length 81 [2023-12-16 18:02:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:50,629 INFO L495 AbstractCegarLoop]: Abstraction has 3330 states and 4507 transitions. [2023-12-16 18:02:50,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 4507 transitions. [2023-12-16 18:02:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 18:02:50,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:50,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:50,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:50,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:50,832 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:50,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:50,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1921625942, now seen corresponding path program 1 times [2023-12-16 18:02:50,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:50,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243250191] [2023-12-16 18:02:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:50,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:50,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:50,834 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:50,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 18:02:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:50,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:50,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:50,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:50,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:50,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243250191] [2023-12-16 18:02:50,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243250191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:50,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:50,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:50,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327090628] [2023-12-16 18:02:50,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:50,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:50,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:50,956 INFO L87 Difference]: Start difference. First operand 3330 states and 4507 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:50,996 INFO L93 Difference]: Finished difference Result 4966 states and 6717 transitions. [2023-12-16 18:02:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:50,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-16 18:02:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:51,000 INFO L225 Difference]: With dead ends: 4966 [2023-12-16 18:02:51,000 INFO L226 Difference]: Without dead ends: 1700 [2023-12-16 18:02:51,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:51,003 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 31 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:51,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 166 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-12-16 18:02:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1698. [2023-12-16 18:02:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 1.3264584560989983) internal successors, (2251), 1697 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2251 transitions. [2023-12-16 18:02:51,039 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2251 transitions. Word has length 83 [2023-12-16 18:02:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:51,039 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2251 transitions. [2023-12-16 18:02:51,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2251 transitions. [2023-12-16 18:02:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-16 18:02:51,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:51,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:51,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:51,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:51,243 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:51,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash 113617773, now seen corresponding path program 1 times [2023-12-16 18:02:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:51,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484778041] [2023-12-16 18:02:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:51,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:51,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:51,244 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:51,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 18:02:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:51,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:51,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:51,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:52,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484778041] [2023-12-16 18:02:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484778041] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:52,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750881969] [2023-12-16 18:02:52,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:52,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:52,058 INFO L87 Difference]: Start difference. First operand 1698 states and 2251 transitions. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:52,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:52,791 INFO L93 Difference]: Finished difference Result 4786 states and 6323 transitions. [2023-12-16 18:02:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 18:02:52,792 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-16 18:02:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:52,796 INFO L225 Difference]: With dead ends: 4786 [2023-12-16 18:02:52,796 INFO L226 Difference]: Without dead ends: 3152 [2023-12-16 18:02:52,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-16 18:02:52,799 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 353 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:52,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 731 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:02:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2023-12-16 18:02:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 2882. [2023-12-16 18:02:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2881 states have (on average 1.308920513710517) internal successors, (3771), 2881 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3771 transitions. [2023-12-16 18:02:52,875 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3771 transitions. Word has length 84 [2023-12-16 18:02:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:52,875 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 3771 transitions. [2023-12-16 18:02:52,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3771 transitions. [2023-12-16 18:02:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 18:02:52,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:52,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:52,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-16 18:02:53,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:53,079 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:53,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 266457861, now seen corresponding path program 1 times [2023-12-16 18:02:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535111662] [2023-12-16 18:02:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:53,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:53,080 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:53,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 18:02:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:53,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 18:02:53,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:02:53,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:02:53,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:53,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535111662] [2023-12-16 18:02:53,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535111662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:53,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:53,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 18:02:53,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195015577] [2023-12-16 18:02:53,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:53,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:02:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:02:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:02:53,328 INFO L87 Difference]: Start difference. First operand 2882 states and 3771 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:53,531 INFO L93 Difference]: Finished difference Result 11004 states and 14228 transitions. [2023-12-16 18:02:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:02:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-16 18:02:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:53,539 INFO L225 Difference]: With dead ends: 11004 [2023-12-16 18:02:53,539 INFO L226 Difference]: Without dead ends: 8186 [2023-12-16 18:02:53,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:02:53,542 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 169 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:53,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 376 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8186 states. [2023-12-16 18:02:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8186 to 7966. [2023-12-16 18:02:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7966 states, 7965 states have (on average 1.2465787821720025) internal successors, (9929), 7965 states have internal predecessors, (9929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 9929 transitions. [2023-12-16 18:02:53,770 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 9929 transitions. Word has length 86 [2023-12-16 18:02:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:53,772 INFO L495 AbstractCegarLoop]: Abstraction has 7966 states and 9929 transitions. [2023-12-16 18:02:53,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 9929 transitions. [2023-12-16 18:02:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 18:02:53,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:53,778 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:53,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-16 18:02:53,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:53,981 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:53,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:53,982 INFO L85 PathProgramCache]: Analyzing trace with hash 632869156, now seen corresponding path program 1 times [2023-12-16 18:02:53,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:53,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089362205] [2023-12-16 18:02:53,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:53,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:53,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:53,983 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:53,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 18:02:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:54,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:02:54,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:54,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:55,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089362205] [2023-12-16 18:02:55,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089362205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:55,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:55,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:02:55,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798883762] [2023-12-16 18:02:55,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:55,260 INFO L87 Difference]: Start difference. First operand 7966 states and 9929 transitions. Second operand has 26 states, 26 states have (on average 9.153846153846153) internal successors, (238), 25 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:56,832 INFO L93 Difference]: Finished difference Result 13294 states and 16645 transitions. [2023-12-16 18:02:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 18:02:56,834 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.153846153846153) internal successors, (238), 25 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-16 18:02:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:56,842 INFO L225 Difference]: With dead ends: 13294 [2023-12-16 18:02:56,843 INFO L226 Difference]: Without dead ends: 8084 [2023-12-16 18:02:56,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 18:02:56,849 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 802 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:56,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 765 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:02:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2023-12-16 18:02:57,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 7966. [2023-12-16 18:02:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7966 states, 7965 states have (on average 1.2325172630257375) internal successors, (9817), 7965 states have internal predecessors, (9817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 9817 transitions. [2023-12-16 18:02:57,139 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 9817 transitions. Word has length 131 [2023-12-16 18:02:57,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:57,140 INFO L495 AbstractCegarLoop]: Abstraction has 7966 states and 9817 transitions. [2023-12-16 18:02:57,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.153846153846153) internal successors, (238), 25 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 9817 transitions. [2023-12-16 18:02:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 18:02:57,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:57,143 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:57,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:57,346 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:57,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1436289269, now seen corresponding path program 1 times [2023-12-16 18:02:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842091608] [2023-12-16 18:02:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:57,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:57,348 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:57,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 18:02:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:57,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:02:57,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:58,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:58,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842091608] [2023-12-16 18:02:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842091608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:58,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:58,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:02:58,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384940312] [2023-12-16 18:02:58,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:58,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:58,638 INFO L87 Difference]: Start difference. First operand 7966 states and 9817 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:59,921 INFO L93 Difference]: Finished difference Result 14842 states and 18364 transitions. [2023-12-16 18:02:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 18:02:59,922 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-16 18:02:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:59,928 INFO L225 Difference]: With dead ends: 14842 [2023-12-16 18:02:59,928 INFO L226 Difference]: Without dead ends: 7968 [2023-12-16 18:02:59,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=378, Invalid=1428, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 18:02:59,934 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 791 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:59,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 665 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:02:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2023-12-16 18:03:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7966. [2023-12-16 18:03:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7966 states, 7965 states have (on average 1.2194601381042058) internal successors, (9713), 7965 states have internal predecessors, (9713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 9713 transitions. [2023-12-16 18:03:00,200 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 9713 transitions. Word has length 132 [2023-12-16 18:03:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:00,200 INFO L495 AbstractCegarLoop]: Abstraction has 7966 states and 9713 transitions. [2023-12-16 18:03:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 9713 transitions. [2023-12-16 18:03:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 18:03:00,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:00,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:00,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:00,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:00,406 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:00,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1285607124, now seen corresponding path program 1 times [2023-12-16 18:03:00,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:00,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406002260] [2023-12-16 18:03:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:03:00,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:00,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:00,408 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:00,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-16 18:03:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:03:00,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:03:00,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:01,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:03:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:01,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406002260] [2023-12-16 18:03:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406002260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:03:01,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:03:01,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:03:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680782114] [2023-12-16 18:03:01,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:03:01,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:03:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:03:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:03:01,787 INFO L87 Difference]: Start difference. First operand 7966 states and 9713 transitions. Second operand has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:05,381 INFO L93 Difference]: Finished difference Result 35598 states and 44170 transitions. [2023-12-16 18:03:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-16 18:03:05,384 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-16 18:03:05,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:05,410 INFO L225 Difference]: With dead ends: 35598 [2023-12-16 18:03:05,410 INFO L226 Difference]: Without dead ends: 32316 [2023-12-16 18:03:05,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2620 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1444, Invalid=7486, Unknown=0, NotChecked=0, Total=8930 [2023-12-16 18:03:05,416 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1832 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:05,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 928 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 18:03:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32316 states. [2023-12-16 18:03:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32316 to 7966. [2023-12-16 18:03:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7966 states, 7965 states have (on average 1.2124293785310734) internal successors, (9657), 7965 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 9657 transitions. [2023-12-16 18:03:05,898 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 9657 transitions. Word has length 133 [2023-12-16 18:03:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:05,898 INFO L495 AbstractCegarLoop]: Abstraction has 7966 states and 9657 transitions. [2023-12-16 18:03:05,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 9657 transitions. [2023-12-16 18:03:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 18:03:05,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:05,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:05,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:06,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:06,105 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:06,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1201270683, now seen corresponding path program 1 times [2023-12-16 18:03:06,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:06,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940174053] [2023-12-16 18:03:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:03:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:06,107 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:06,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-16 18:03:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:03:06,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:03:06,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:07,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:03:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:07,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:07,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940174053] [2023-12-16 18:03:07,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940174053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:03:07,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:03:07,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:03:07,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82100382] [2023-12-16 18:03:07,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:03:07,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:03:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:03:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:03:07,457 INFO L87 Difference]: Start difference. First operand 7966 states and 9657 transitions. Second operand has 26 states, 26 states have (on average 9.846153846153847) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:08,786 INFO L93 Difference]: Finished difference Result 11710 states and 14253 transitions. [2023-12-16 18:03:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 18:03:08,786 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.846153846153847) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-16 18:03:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:08,793 INFO L225 Difference]: With dead ends: 11710 [2023-12-16 18:03:08,793 INFO L226 Difference]: Without dead ends: 8572 [2023-12-16 18:03:08,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=391, Invalid=1501, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 18:03:08,798 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 909 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:08,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 860 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:03:08,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2023-12-16 18:03:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 7966. [2023-12-16 18:03:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7966 states, 7965 states have (on average 1.205398618957941) internal successors, (9601), 7965 states have internal predecessors, (9601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 9601 transitions. [2023-12-16 18:03:09,135 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 9601 transitions. Word has length 134 [2023-12-16 18:03:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:09,135 INFO L495 AbstractCegarLoop]: Abstraction has 7966 states and 9601 transitions. [2023-12-16 18:03:09,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.846153846153847) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 9601 transitions. [2023-12-16 18:03:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 18:03:09,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:09,138 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:09,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:09,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:09,341 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:09,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1385075844, now seen corresponding path program 1 times [2023-12-16 18:03:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:09,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543978664] [2023-12-16 18:03:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:03:09,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:09,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:09,342 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:09,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-16 18:03:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:03:09,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:03:09,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:10,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:03:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:10,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543978664] [2023-12-16 18:03:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543978664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:03:10,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:03:10,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:03:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379609911] [2023-12-16 18:03:10,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:03:10,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:03:10,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:10,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:03:10,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:03:10,825 INFO L87 Difference]: Start difference. First operand 7966 states and 9601 transitions. Second operand has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 26 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:14,385 INFO L93 Difference]: Finished difference Result 13452 states and 16140 transitions. [2023-12-16 18:03:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-16 18:03:14,385 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 26 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-16 18:03:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:14,393 INFO L225 Difference]: With dead ends: 13452 [2023-12-16 18:03:14,393 INFO L226 Difference]: Without dead ends: 9826 [2023-12-16 18:03:14,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-16 18:03:14,401 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 712 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:14,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1781 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 18:03:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9826 states. [2023-12-16 18:03:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9826 to 4966. [2023-12-16 18:03:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4965 states have (on average 1.2006042296072508) internal successors, (5961), 4965 states have internal predecessors, (5961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 5961 transitions. [2023-12-16 18:03:14,677 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 5961 transitions. Word has length 135 [2023-12-16 18:03:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:14,677 INFO L495 AbstractCegarLoop]: Abstraction has 4966 states and 5961 transitions. [2023-12-16 18:03:14,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 26 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 5961 transitions. [2023-12-16 18:03:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 18:03:14,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:14,679 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:14,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:14,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:14,882 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:14,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1739781416, now seen corresponding path program 1 times [2023-12-16 18:03:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:14,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661086570] [2023-12-16 18:03:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:03:14,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:14,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:14,883 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:14,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-16 18:03:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:03:14,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:03:14,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:16,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:03:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:16,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:16,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661086570] [2023-12-16 18:03:16,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661086570] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:03:16,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:03:16,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:03:16,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736854013] [2023-12-16 18:03:16,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:03:16,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:03:16,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:16,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:03:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:03:16,518 INFO L87 Difference]: Start difference. First operand 4966 states and 5961 transitions. Second operand has 26 states, 26 states have (on average 9.961538461538462) internal successors, (259), 26 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:20,697 INFO L93 Difference]: Finished difference Result 9030 states and 10850 transitions. [2023-12-16 18:03:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-16 18:03:20,697 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.961538461538462) internal successors, (259), 26 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-16 18:03:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:20,704 INFO L225 Difference]: With dead ends: 9030 [2023-12-16 18:03:20,704 INFO L226 Difference]: Without dead ends: 7968 [2023-12-16 18:03:20,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 18:03:20,706 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 828 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:20,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2348 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 18:03:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2023-12-16 18:03:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 6529. [2023-12-16 18:03:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6529 states, 6528 states have (on average 1.1994485294117647) internal successors, (7830), 6528 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6529 states to 6529 states and 7830 transitions. [2023-12-16 18:03:21,032 INFO L78 Accepts]: Start accepts. Automaton has 6529 states and 7830 transitions. Word has length 135 [2023-12-16 18:03:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:21,032 INFO L495 AbstractCegarLoop]: Abstraction has 6529 states and 7830 transitions. [2023-12-16 18:03:21,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.961538461538462) internal successors, (259), 26 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 6529 states and 7830 transitions. [2023-12-16 18:03:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 18:03:21,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:21,034 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:21,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-16 18:03:21,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:21,237 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:21,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -769303804, now seen corresponding path program 1 times [2023-12-16 18:03:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112167285] [2023-12-16 18:03:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:03:21,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:21,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:21,238 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:21,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-16 18:03:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:03:21,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:03:21,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:22,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:03:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:22,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:22,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112167285] [2023-12-16 18:03:22,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112167285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:03:22,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:03:22,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:03:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893235093] [2023-12-16 18:03:22,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:03:22,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:03:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:03:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:03:22,867 INFO L87 Difference]: Start difference. First operand 6529 states and 7830 transitions. Second operand has 26 states, 26 states have (on average 9.76923076923077) internal successors, (254), 26 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:24,847 INFO L93 Difference]: Finished difference Result 12528 states and 15139 transitions. [2023-12-16 18:03:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 18:03:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.76923076923077) internal successors, (254), 26 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-16 18:03:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:24,856 INFO L225 Difference]: With dead ends: 12528 [2023-12-16 18:03:24,856 INFO L226 Difference]: Without dead ends: 11082 [2023-12-16 18:03:24,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=321, Invalid=2031, Unknown=0, NotChecked=0, Total=2352 [2023-12-16 18:03:24,858 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 553 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:24,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1307 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:03:24,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2023-12-16 18:03:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 10166. [2023-12-16 18:03:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10166 states, 10165 states have (on average 1.1989178553861288) internal successors, (12187), 10165 states have internal predecessors, (12187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10166 states to 10166 states and 12187 transitions. [2023-12-16 18:03:25,375 INFO L78 Accepts]: Start accepts. Automaton has 10166 states and 12187 transitions. Word has length 135 [2023-12-16 18:03:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:25,376 INFO L495 AbstractCegarLoop]: Abstraction has 10166 states and 12187 transitions. [2023-12-16 18:03:25,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.76923076923077) internal successors, (254), 26 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 10166 states and 12187 transitions. [2023-12-16 18:03:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 18:03:25,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:25,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:25,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:25,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:25,596 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:25,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash -271303000, now seen corresponding path program 1 times [2023-12-16 18:03:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018787357] [2023-12-16 18:03:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:03:25,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:25,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:25,598 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:25,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-16 18:03:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:03:25,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:03:25,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:26,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:03:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:27,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:27,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018787357] [2023-12-16 18:03:27,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018787357] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:03:27,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:03:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:03:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824644663] [2023-12-16 18:03:27,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:03:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:03:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:03:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:03:27,026 INFO L87 Difference]: Start difference. First operand 10166 states and 12187 transitions. Second operand has 26 states, 26 states have (on average 9.576923076923077) internal successors, (249), 26 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:31,842 INFO L93 Difference]: Finished difference Result 18670 states and 22477 transitions. [2023-12-16 18:03:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-16 18:03:31,843 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.576923076923077) internal successors, (249), 26 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-16 18:03:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:31,855 INFO L225 Difference]: With dead ends: 18670 [2023-12-16 18:03:31,855 INFO L226 Difference]: Without dead ends: 14592 [2023-12-16 18:03:31,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 18:03:31,860 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 568 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:31,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 2895 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 18:03:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14592 states. [2023-12-16 18:03:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14592 to 12321. [2023-12-16 18:03:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12321 states, 12320 states have (on average 1.1905032467532468) internal successors, (14667), 12320 states have internal predecessors, (14667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12321 states to 12321 states and 14667 transitions. [2023-12-16 18:03:32,552 INFO L78 Accepts]: Start accepts. Automaton has 12321 states and 14667 transitions. Word has length 135 [2023-12-16 18:03:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:32,553 INFO L495 AbstractCegarLoop]: Abstraction has 12321 states and 14667 transitions. [2023-12-16 18:03:32,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.576923076923077) internal successors, (249), 26 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 12321 states and 14667 transitions. [2023-12-16 18:03:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 18:03:32,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:32,554 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:32,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-16 18:03:32,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:32,760 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:32,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1563033212, now seen corresponding path program 1 times [2023-12-16 18:03:32,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:32,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40038817] [2023-12-16 18:03:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:03:32,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:32,763 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:32,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-16 18:03:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:03:32,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:03:32,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:33,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:03:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:03:34,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40038817] [2023-12-16 18:03:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40038817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:03:34,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:03:34,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:03:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37084595] [2023-12-16 18:03:34,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:03:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:03:34,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:03:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:03:34,285 INFO L87 Difference]: Start difference. First operand 12321 states and 14667 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:40,037 INFO L93 Difference]: Finished difference Result 36606 states and 43230 transitions. [2023-12-16 18:03:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-16 18:03:40,037 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-16 18:03:40,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:40,067 INFO L225 Difference]: With dead ends: 36606 [2023-12-16 18:03:40,067 INFO L226 Difference]: Without dead ends: 32428 [2023-12-16 18:03:40,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-16 18:03:40,075 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 855 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:40,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2341 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 18:03:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32428 states. [2023-12-16 18:03:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32428 to 23161. [2023-12-16 18:03:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23161 states, 23160 states have (on average 1.1798359240069085) internal successors, (27325), 23160 states have internal predecessors, (27325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23161 states to 23161 states and 27325 transitions. [2023-12-16 18:03:41,542 INFO L78 Accepts]: Start accepts. Automaton has 23161 states and 27325 transitions. Word has length 135 [2023-12-16 18:03:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:41,543 INFO L495 AbstractCegarLoop]: Abstraction has 23161 states and 27325 transitions. [2023-12-16 18:03:41,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 23161 states and 27325 transitions. [2023-12-16 18:03:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-16 18:03:41,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:41,552 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:41,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:41,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:41,757 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:41,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash 79489549, now seen corresponding path program 2 times [2023-12-16 18:03:41,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:41,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082481963] [2023-12-16 18:03:41,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:03:41,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:41,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:41,759 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:41,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-16 18:03:41,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 18:03:41,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:03:41,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:03:41,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-12-16 18:03:43,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:03:43,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082481963] [2023-12-16 18:03:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082481963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:03:43,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:03:43,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:03:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806610479] [2023-12-16 18:03:43,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:03:43,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:03:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:03:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:03:43,143 INFO L87 Difference]: Start difference. First operand 23161 states and 27325 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:03:44,605 INFO L93 Difference]: Finished difference Result 32849 states and 39369 transitions. [2023-12-16 18:03:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:03:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-12-16 18:03:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:03:44,637 INFO L225 Difference]: With dead ends: 32849 [2023-12-16 18:03:44,637 INFO L226 Difference]: Without dead ends: 28088 [2023-12-16 18:03:44,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:03:44,644 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 319 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:44,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 440 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:03:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28088 states. [2023-12-16 18:03:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28088 to 23121. [2023-12-16 18:03:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23121 states, 23120 states have (on average 1.1725778546712802) internal successors, (27110), 23120 states have internal predecessors, (27110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23121 states to 23121 states and 27110 transitions. [2023-12-16 18:03:46,161 INFO L78 Accepts]: Start accepts. Automaton has 23121 states and 27110 transitions. Word has length 186 [2023-12-16 18:03:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:03:46,161 INFO L495 AbstractCegarLoop]: Abstraction has 23121 states and 27110 transitions. [2023-12-16 18:03:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:03:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 23121 states and 27110 transitions. [2023-12-16 18:03:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-16 18:03:46,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:03:46,171 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:46,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:46,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:46,373 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:03:46,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:03:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash 434195121, now seen corresponding path program 2 times [2023-12-16 18:03:46,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:03:46,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964202309] [2023-12-16 18:03:46,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:03:46,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:46,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:03:46,376 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:03:46,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-16 18:03:46,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 18:03:46,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:03:46,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:03:46,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:03:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-16 18:03:47,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:03:47,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:03:47,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964202309] [2023-12-16 18:03:47,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964202309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:03:47,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:03:47,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:03:47,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699042869] [2023-12-16 18:03:47,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:03:47,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:03:47,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:03:47,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:03:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:03:47,688 INFO L87 Difference]: Start difference. First operand 23121 states and 27110 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 18:03:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:03:48,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:03:48,466 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 205 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:48,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 368 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:03:48,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:03:48,472 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:03:48,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:48,498 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:03:48,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:48,671 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (23121states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (13872 states constructed, input type IntersectNwa). [2023-12-16 18:03:48,690 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:48,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:03:48,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:03:48 BoogieIcfgContainer [2023-12-16 18:03:48,695 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:03:48,696 INFO L158 Benchmark]: Toolchain (without parser) took 72862.11ms. Allocated memory was 320.9MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 268.0MB in the beginning and 972.8MB in the end (delta: -704.8MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 18:03:48,696 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 226.5MB. Free memory was 177.2MB in the beginning and 177.1MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:03:48,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.97ms. Allocated memory is still 320.9MB. Free memory was 267.6MB in the beginning and 251.5MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 18:03:48,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.36ms. Allocated memory is still 320.9MB. Free memory was 251.5MB in the beginning and 249.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 18:03:48,715 INFO L158 Benchmark]: Boogie Preprocessor took 44.32ms. Allocated memory is still 320.9MB. Free memory was 249.1MB in the beginning and 246.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 18:03:48,719 INFO L158 Benchmark]: RCFGBuilder took 492.42ms. Allocated memory is still 320.9MB. Free memory was 246.0MB in the beginning and 283.8MB in the end (delta: -37.8MB). Peak memory consumption was 30.9MB. Max. memory is 8.0GB. [2023-12-16 18:03:48,719 INFO L158 Benchmark]: TraceAbstraction took 72078.00ms. Allocated memory was 320.9MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 283.3MB in the beginning and 972.8MB in the end (delta: -689.6MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 18:03:48,721 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 226.5MB. Free memory was 177.2MB in the beginning and 177.1MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.97ms. Allocated memory is still 320.9MB. Free memory was 267.6MB in the beginning and 251.5MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.36ms. Allocated memory is still 320.9MB. Free memory was 251.5MB in the beginning and 249.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.32ms. Allocated memory is still 320.9MB. Free memory was 249.1MB in the beginning and 246.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 492.42ms. Allocated memory is still 320.9MB. Free memory was 246.0MB in the beginning and 283.8MB in the end (delta: -37.8MB). Peak memory consumption was 30.9MB. Max. memory is 8.0GB. * TraceAbstraction took 72078.00ms. Allocated memory was 320.9MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 283.3MB in the beginning and 972.8MB in the end (delta: -689.6MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 427]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 427). Cancelled while NwaCegarLoop was constructing difference of abstraction (23121states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (13872 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.0s, OverallIterations: 32, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 35.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11867 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11867 mSDsluCounter, 22154 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18174 mSDsCounter, 258 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17559 IncrementalHoareTripleChecker+Invalid, 17817 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 258 mSolverCounterUnsat, 3980 mSDtfsCounter, 17559 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4922 GetRequests, 4218 SyntacticMatches, 0 SemanticMatches, 704 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8945 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23161occurred in iteration=30, InterpolantAutomatonStates: 505, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.6s AutomataMinimizationTime, 31 MinimizatonAttempts, 53402 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 2904 NumberOfCodeBlocks, 2664 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 4538 ConstructedInterpolants, 1259 QuantifiedInterpolants, 52891 SizeOfPredicates, 135 NumberOfNonLiveVariables, 5845 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 47 InterpolantComputations, 17 PerfectInterpolantSequences, 1340/2818 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown