/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/nla-digbench-scaling/ps4-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 04:48:45,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 04:48:45,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 04:48:45,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 04:48:45,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 04:48:45,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 04:48:45,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 04:48:45,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 04:48:45,895 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 04:48:45,895 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 04:48:45,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 04:48:45,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 04:48:45,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 04:48:45,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 04:48:45,897 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 04:48:45,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 04:48:45,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 04:48:45,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 04:48:45,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 04:48:45,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 04:48:45,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 04:48:45,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 04:48:45,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 04:48:45,902 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 04:48:45,902 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 04:48:45,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 04:48:45,902 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 04:48:45,902 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 04:48:45,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 04:48:45,903 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 04:48:45,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 04:48:45,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 04:48:45,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 04:48:45,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 04:48:45,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:48:45,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 04:48:45,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 04:48:45,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 04:48:45,904 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 04:48:45,904 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 04:48:45,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 04:48:45,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 04:48:45,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 04:48:45,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 04:48:45,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 04:48:45,905 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 04:48:45,905 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 04:48:46,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 04:48:46,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 04:48:46,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 04:48:46,136 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 04:48:46,136 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 04:48:46,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound50.c [2023-12-25 04:48:47,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 04:48:47,324 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 04:48:47,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound50.c [2023-12-25 04:48:47,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5fa03df/3dc6904145eb4f69aad2d44bde710ebe/FLAGe46b51a87 [2023-12-25 04:48:47,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5fa03df/3dc6904145eb4f69aad2d44bde710ebe [2023-12-25 04:48:47,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 04:48:47,344 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 04:48:47,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 04:48:47,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 04:48:47,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 04:48:47,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78432588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47, skipping insertion in model container [2023-12-25 04:48:47,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 04:48:47,471 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound50.c[458,471] [2023-12-25 04:48:47,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:48:47,491 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 04:48:47,499 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound50.c[458,471] [2023-12-25 04:48:47,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:48:47,513 INFO L206 MainTranslator]: Completed translation [2023-12-25 04:48:47,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47 WrapperNode [2023-12-25 04:48:47,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 04:48:47,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 04:48:47,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 04:48:47,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 04:48:47,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,538 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-12-25 04:48:47,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 04:48:47,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 04:48:47,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 04:48:47,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 04:48:47,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,555 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]. [2023-12-25 04:48:47,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 04:48:47,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 04:48:47,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 04:48:47,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 04:48:47,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (1/1) ... [2023-12-25 04:48:47,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:48:47,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 04:48:47,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 04:48:47,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 04:48:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 04:48:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 04:48:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 04:48:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 04:48:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 04:48:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 04:48:47,707 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 04:48:47,708 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 04:48:47,906 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 04:48:47,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 04:48:47,927 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 04:48:47,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:48:47 BoogieIcfgContainer [2023-12-25 04:48:47,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 04:48:47,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 04:48:47,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 04:48:47,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 04:48:47,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 04:48:47" (1/3) ... [2023-12-25 04:48:47,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4b0aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:48:47, skipping insertion in model container [2023-12-25 04:48:47,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:47" (2/3) ... [2023-12-25 04:48:47,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4b0aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:48:47, skipping insertion in model container [2023-12-25 04:48:47,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:48:47" (3/3) ... [2023-12-25 04:48:47,933 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound50.c [2023-12-25 04:48:47,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 04:48:47,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 04:48:47,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 04:48:47,978 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;@4ed77141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 04:48:47,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 04:48:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 04:48:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-25 04:48:47,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:47,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-25 04:48:47,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:47,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2070802916, now seen corresponding path program 1 times [2023-12-25 04:48:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124729916] [2023-12-25 04:48:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:47,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:48,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:48:48,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 04:48:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:48,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 04:48:48,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:48,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:48:48,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:48:48,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124729916] [2023-12-25 04:48:48,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124729916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:48:48,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:48:48,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 04:48:48,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225199750] [2023-12-25 04:48:48,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:48:48,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 04:48:48,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:48:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 04:48:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 04:48:48,172 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:48:48,198 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2023-12-25 04:48:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 04:48:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-25 04:48:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:48:48,217 INFO L225 Difference]: With dead ends: 29 [2023-12-25 04:48:48,217 INFO L226 Difference]: Without dead ends: 13 [2023-12-25 04:48:48,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 04:48:48,231 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 04:48:48,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 04:48:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-25 04:48:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-25 04:48:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:48:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-12-25 04:48:48,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2023-12-25 04:48:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:48:48,262 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-12-25 04:48:48,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-12-25 04:48:48,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-25 04:48:48,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:48,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:48:48,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 04:48:48,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:48,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:48,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash -170804699, now seen corresponding path program 1 times [2023-12-25 04:48:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:48,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721512570] [2023-12-25 04:48:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:48,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:48,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:48:48,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 04:48:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:48,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 04:48:48,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:48,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:48:48,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:48:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721512570] [2023-12-25 04:48:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721512570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:48:48,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:48:48,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 04:48:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020752366] [2023-12-25 04:48:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:48:48,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 04:48:48,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:48:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 04:48:48,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 04:48:48,624 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:48:48,654 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-12-25 04:48:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 04:48:48,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-25 04:48:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:48:48,655 INFO L225 Difference]: With dead ends: 23 [2023-12-25 04:48:48,655 INFO L226 Difference]: Without dead ends: 15 [2023-12-25 04:48:48,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 04:48:48,656 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 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 [2023-12-25 04:48:48,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 04:48:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-25 04:48:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-25 04:48:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:48:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-25 04:48:48,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 7 [2023-12-25 04:48:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:48:48,660 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-25 04:48:48,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-25 04:48:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-25 04:48:48,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:48,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:48:48,669 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 (3)] Ended with exit code 0 [2023-12-25 04:48:48,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:48,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:48,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash -169017239, now seen corresponding path program 1 times [2023-12-25 04:48:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:48,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530586725] [2023-12-25 04:48:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:48,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:48,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:48,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:48:48,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 04:48:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:49,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 04:48:49,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:49,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:48:49,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:48:49,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530586725] [2023-12-25 04:48:49,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530586725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:48:49,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:48:49,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 04:48:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174959049] [2023-12-25 04:48:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:48:49,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 04:48:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:48:49,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 04:48:49,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 04:48:49,120 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:48:50,763 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2023-12-25 04:48:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 04:48:50,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-25 04:48:50,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:48:50,781 INFO L225 Difference]: With dead ends: 25 [2023-12-25 04:48:50,781 INFO L226 Difference]: Without dead ends: 21 [2023-12-25 04:48:50,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 04:48:50,782 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 04:48:50,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 04:48:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-25 04:48:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-25 04:48:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 04:48:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-12-25 04:48:50,787 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2023-12-25 04:48:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:48:50,787 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-12-25 04:48:50,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-12-25 04:48:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-25 04:48:50,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:50,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:48:50,806 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 [2023-12-25 04:48:50,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:50,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:50,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash 867499275, now seen corresponding path program 1 times [2023-12-25 04:48:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957015782] [2023-12-25 04:48:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:50,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:50,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:50,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:48:50,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 04:48:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:51,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 04:48:51,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:51,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:48:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:51,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:48:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957015782] [2023-12-25 04:48:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957015782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 04:48:51,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:48:51,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-25 04:48:51,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628316889] [2023-12-25 04:48:51,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:48:51,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 04:48:51,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:48:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 04:48:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 04:48:51,381 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:48:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:48:55,594 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2023-12-25 04:48:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 04:48:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-12-25 04:48:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:48:55,616 INFO L225 Difference]: With dead ends: 55 [2023-12-25 04:48:55,616 INFO L226 Difference]: Without dead ends: 47 [2023-12-25 04:48:55,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 04:48:55,617 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-25 04:48:55,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 73 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-25 04:48:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-25 04:48:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2023-12-25 04:48:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 04:48:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2023-12-25 04:48:55,624 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 15 [2023-12-25 04:48:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:48:55,624 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2023-12-25 04:48:55,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:48:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2023-12-25 04:48:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-25 04:48:55,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:55,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:48:55,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 04:48:55,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:55,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:55,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:55,826 INFO L85 PathProgramCache]: Analyzing trace with hash 869286735, now seen corresponding path program 1 times [2023-12-25 04:48:55,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:55,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482528828] [2023-12-25 04:48:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:55,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:48:55,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:55,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:48:55,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 04:48:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:56,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 04:48:56,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:56,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:49:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 04:49:11,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:49:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482528828] [2023-12-25 04:49:11,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482528828] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 04:49:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 04:49:11,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-25 04:49:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107491372] [2023-12-25 04:49:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:49:11,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 04:49:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:49:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 04:49:11,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-25 04:49:11,963 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:49:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:49:14,821 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-12-25 04:49:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 04:49:14,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-25 04:49:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:49:14,852 INFO L225 Difference]: With dead ends: 57 [2023-12-25 04:49:14,852 INFO L226 Difference]: Without dead ends: 46 [2023-12-25 04:49:14,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-25 04:49:14,853 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 04:49:14,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 04:49:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-25 04:49:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2023-12-25 04:49:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 04:49:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-12-25 04:49:14,880 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 15 [2023-12-25 04:49:14,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:49:14,880 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-12-25 04:49:14,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:49:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-12-25 04:49:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 04:49:14,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:49:14,881 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 04:49:14,906 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 [2023-12-25 04:49:15,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:49:15,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:49:15,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:49:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash 24753612, now seen corresponding path program 1 times [2023-12-25 04:49:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:49:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849152923] [2023-12-25 04:49:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:49:15,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:49:15,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:49:15,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:49:15,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 04:49:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:49:15,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 04:49:15,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:49:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 04:49:15,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:49:28,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:49:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849152923] [2023-12-25 04:49:28,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849152923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:49:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [57204311] [2023-12-25 04:49:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:49:28,742 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 04:49:28,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 04:49:28,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 04:49:28,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-25 04:49:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:49:29,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 04:49:29,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:49:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 04:49:29,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:49:34,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [57204311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:49:34,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:49:34,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-25 04:49:34,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61656500] [2023-12-25 04:49:34,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:49:34,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 04:49:34,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:49:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 04:49:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-25 04:49:34,615 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:49:36,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:49:36,426 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2023-12-25 04:49:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 04:49:36,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-12-25 04:49:36,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:49:36,427 INFO L225 Difference]: With dead ends: 45 [2023-12-25 04:49:36,428 INFO L226 Difference]: Without dead ends: 40 [2023-12-25 04:49:36,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-25 04:49:36,428 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 04:49:36,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 04:49:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-25 04:49:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-25 04:49:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 04:49:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-12-25 04:49:36,438 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 21 [2023-12-25 04:49:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:49:36,438 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-12-25 04:49:36,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:49:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-12-25 04:49:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-25 04:49:36,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:49:36,439 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-12-25 04:49:36,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 04:49:36,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-25 04:49:36,855 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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 04:49:36,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:49:36,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:49:36,855 INFO L85 PathProgramCache]: Analyzing trace with hash 44232242, now seen corresponding path program 2 times [2023-12-25 04:49:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:49:36,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342090541] [2023-12-25 04:49:36,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 04:49:36,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:49:36,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:49:36,858 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:49:36,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 04:49:37,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 04:49:37,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:49:37,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 04:49:37,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:49:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 04:49:37,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:49:57,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:49:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342090541] [2023-12-25 04:49:57,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342090541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:49:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673575740] [2023-12-25 04:49:57,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 04:49:57,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 04:49:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 04:49:57,554 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 04:49:57,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-25 04:49:58,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 04:49:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:49:58,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 04:49:58,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:49:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 04:49:58,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:50:07,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [673575740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:50:07,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:50:07,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-25 04:50:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114562354] [2023-12-25 04:50:07,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:50:07,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 04:50:07,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:50:07,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 04:50:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-25 04:50:07,224 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 04:50:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:50:09,330 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2023-12-25 04:50:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 04:50:09,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-12-25 04:50:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:50:09,331 INFO L225 Difference]: With dead ends: 45 [2023-12-25 04:50:09,331 INFO L226 Difference]: Without dead ends: 40 [2023-12-25 04:50:09,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 04:50:09,332 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 04:50:09,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 107 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 04:50:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-25 04:50:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-25 04:50:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 04:50:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-12-25 04:50:09,337 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2023-12-25 04:50:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:50:09,337 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-12-25 04:50:09,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 04:50:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-12-25 04:50:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-25 04:50:09,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:50:09,338 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2023-12-25 04:50:09,352 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 [2023-12-25 04:50:09,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-25 04:50:09,746 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=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 04:50:09,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:50:09,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:50:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash -698851176, now seen corresponding path program 3 times [2023-12-25 04:50:09,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:50:09,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135607010] [2023-12-25 04:50:09,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 04:50:09,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:50:09,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:50:09,760 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:50:09,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 04:50:10,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 04:50:10,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:50:10,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 04:50:10,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:50:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 04:50:11,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:50:33,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:50:33,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135607010] [2023-12-25 04:50:33,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135607010] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:50:33,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1026238471] [2023-12-25 04:50:33,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 04:50:33,651 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 04:50:33,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 04:50:33,652 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 04:50:33,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-25 04:50:34,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 04:50:34,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:50:34,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 04:50:34,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:50:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 04:50:35,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:50:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1026238471] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:50:46,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:50:46,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-25 04:50:46,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370501820] [2023-12-25 04:50:46,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:50:46,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 04:50:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:50:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 04:50:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-25 04:50:46,153 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 04:50:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:50:48,869 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2023-12-25 04:50:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 04:50:48,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-12-25 04:50:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:50:48,870 INFO L225 Difference]: With dead ends: 47 [2023-12-25 04:50:48,870 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 04:50:48,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-25 04:50:48,871 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 04:50:48,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 147 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 04:50:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 04:50:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-25 04:50:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 04:50:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2023-12-25 04:50:48,877 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2023-12-25 04:50:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:50:48,877 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2023-12-25 04:50:48,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 04:50:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2023-12-25 04:50:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 04:50:48,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:50:48,878 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-25 04:50:48,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 04:50:49,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-25 04:50:49,278 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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 04:50:49,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:50:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:50:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash -795795011, now seen corresponding path program 2 times [2023-12-25 04:50:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:50:49,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857064287] [2023-12-25 04:50:49,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 04:50:49,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:50:49,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:50:49,280 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:50:49,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 04:50:50,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 04:50:50,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:50:50,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 04:50:50,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:50:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:50:50,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:50:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 04:50:50,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:50:50,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857064287] [2023-12-25 04:50:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857064287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 04:50:50,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:50:50,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-25 04:50:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855356591] [2023-12-25 04:50:50,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:50:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 04:50:50,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:50:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 04:50:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-25 04:50:50,884 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 04:51:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:51:02,103 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2023-12-25 04:51:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 04:51:02,104 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 39 [2023-12-25 04:51:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:51:02,105 INFO L225 Difference]: With dead ends: 118 [2023-12-25 04:51:02,105 INFO L226 Difference]: Without dead ends: 113 [2023-12-25 04:51:02,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2023-12-25 04:51:02,106 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 94 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-25 04:51:02,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 208 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-25 04:51:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-25 04:51:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2023-12-25 04:51:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 04:51:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2023-12-25 04:51:02,116 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 39 [2023-12-25 04:51:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:51:02,117 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2023-12-25 04:51:02,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 04:51:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2023-12-25 04:51:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 04:51:02,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:51:02,118 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2023-12-25 04:51:02,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 04:51:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:51:02,343 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:51:02,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:51:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1312813826, now seen corresponding path program 4 times [2023-12-25 04:51:02,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:51:02,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716918836] [2023-12-25 04:51:02,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 04:51:02,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:51:02,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:51:02,347 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:51:02,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 04:51:03,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 04:51:03,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:51:03,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 04:51:03,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:51:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-25 04:51:03,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:51:47,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:51:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716918836] [2023-12-25 04:51:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716918836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:51:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1603879782] [2023-12-25 04:51:47,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 04:51:47,915 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 04:51:47,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 04:51:47,916 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 04:51:47,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-25 04:51:49,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 04:51:49,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:51:49,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 04:51:49,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:51:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-25 04:51:49,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:52:05,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1603879782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:52:05,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:52:05,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2023-12-25 04:52:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541022160] [2023-12-25 04:52:05,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:52:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 04:52:05,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:52:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 04:52:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=271, Unknown=1, NotChecked=0, Total=342 [2023-12-25 04:52:05,022 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-25 04:52:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:52:08,799 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2023-12-25 04:52:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 04:52:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 45 [2023-12-25 04:52:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:52:08,800 INFO L225 Difference]: With dead ends: 93 [2023-12-25 04:52:08,800 INFO L226 Difference]: Without dead ends: 88 [2023-12-25 04:52:08,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=86, Invalid=333, Unknown=1, NotChecked=0, Total=420 [2023-12-25 04:52:08,801 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 04:52:08,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 213 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 04:52:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-25 04:52:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-25 04:52:08,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 04:52:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2023-12-25 04:52:08,820 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 45 [2023-12-25 04:52:08,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:52:08,820 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2023-12-25 04:52:08,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-25 04:52:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2023-12-25 04:52:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 04:52:08,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:52:08,821 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1] [2023-12-25 04:52:08,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2023-12-25 04:52:09,053 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 [2023-12-25 04:52:09,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:52:09,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:52:09,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:52:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1140847460, now seen corresponding path program 5 times [2023-12-25 04:52:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:52:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691203248] [2023-12-25 04:52:09,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 04:52:09,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:52:09,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:52:09,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:52:09,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 04:52:10,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 04:52:10,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:52:10,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 04:52:10,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:52:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-25 04:52:11,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:53:16,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:53:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691203248] [2023-12-25 04:53:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691203248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:53:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [437125813] [2023-12-25 04:53:16,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 04:53:16,237 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 04:53:16,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 04:53:16,238 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 04:53:16,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-25 04:53:19,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 04:53:19,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:53:19,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 04:53:19,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:53:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-25 04:53:20,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:53:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [437125813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:53:42,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:53:42,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2023-12-25 04:53:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895907653] [2023-12-25 04:53:42,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:53:42,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 04:53:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:53:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 04:53:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=331, Unknown=4, NotChecked=0, Total=420 [2023-12-25 04:53:42,153 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 04:53:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:53:47,212 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2023-12-25 04:53:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 04:53:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 53 [2023-12-25 04:53:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:53:47,213 INFO L225 Difference]: With dead ends: 93 [2023-12-25 04:53:47,213 INFO L226 Difference]: Without dead ends: 88 [2023-12-25 04:53:47,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=102, Invalid=400, Unknown=4, NotChecked=0, Total=506 [2023-12-25 04:53:47,214 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 04:53:47,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 268 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 04:53:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-25 04:53:47,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-25 04:53:47,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 04:53:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2023-12-25 04:53:47,222 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 53 [2023-12-25 04:53:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:53:47,223 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2023-12-25 04:53:47,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 04:53:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2023-12-25 04:53:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-25 04:53:47,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:53:47,224 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1] [2023-12-25 04:53:47,252 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 (16)] Ended with exit code 0 [2023-12-25 04:53:47,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-25 04:53:47,641 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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 04:53:47,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:53:47,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:53:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1237445686, now seen corresponding path program 6 times [2023-12-25 04:53:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:53:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541090004] [2023-12-25 04:53:47,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 04:53:47,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:53:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:53:47,643 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:53:47,645 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 (18)] Waiting until timeout for monitored process [2023-12-25 04:53:49,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 04:53:49,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:53:49,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 04:53:49,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:53:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-25 04:53:51,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:55:03,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:55:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541090004] [2023-12-25 04:55:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541090004] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:55:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1221809962] [2023-12-25 04:55:03,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 04:55:03,779 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 04:55:03,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 04:55:03,781 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 04:55:03,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-25 04:55:05,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 04:55:05,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:55:05,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 04:55:05,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:55:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 16 proven. 100 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-25 04:55:08,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:56:33,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1221809962] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:56:33,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:56:33,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 16 [2023-12-25 04:56:33,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000943293] [2023-12-25 04:56:33,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:56:33,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 04:56:33,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:56:33,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 04:56:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=610, Unknown=2, NotChecked=0, Total=756 [2023-12-25 04:56:33,863 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-25 04:56:44,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:56:44,332 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2023-12-25 04:56:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 04:56:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Word has length 61 [2023-12-25 04:56:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:56:44,334 INFO L225 Difference]: With dead ends: 93 [2023-12-25 04:56:44,334 INFO L226 Difference]: Without dead ends: 88 [2023-12-25 04:56:44,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 101.7s TimeCoverageRelationStatistics Valid=173, Invalid=755, Unknown=2, NotChecked=0, Total=930 [2023-12-25 04:56:44,334 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-25 04:56:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 330 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-25 04:56:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-25 04:56:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-25 04:56:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 04:56:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2023-12-25 04:56:44,344 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 61 [2023-12-25 04:56:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:56:44,344 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2023-12-25 04:56:44,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-25 04:56:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2023-12-25 04:56:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-25 04:56:44,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:56:44,345 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1] [2023-12-25 04:56:44,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-25 04:56:44,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 04:56:44,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:56:44,775 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:56:44,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:56:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1415549392, now seen corresponding path program 7 times [2023-12-25 04:56:44,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:56:44,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119445295] [2023-12-25 04:56:44,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 04:56:44,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:56:44,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:56:44,777 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:56:44,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 04:56:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:56:46,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-25 04:56:46,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:56:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-25 04:56:47,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:58:21,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:58:21,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119445295] [2023-12-25 04:58:21,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119445295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:58:21,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [12746979] [2023-12-25 04:58:21,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 04:58:21,938 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 04:58:21,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 04:58:21,940 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 04:58:21,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-25 04:58:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:58:23,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 04:58:23,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:58:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-25 04:58:24,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:58:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [12746979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 04:58:56,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:58:56,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 16 [2023-12-25 04:58:56,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769257058] [2023-12-25 04:58:56,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:58:56,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 04:58:56,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:58:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 04:58:56,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=555, Unknown=4, NotChecked=0, Total=702 [2023-12-25 04:58:56,055 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-25 04:59:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:59:02,634 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2023-12-25 04:59:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 04:59:02,634 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 69 [2023-12-25 04:59:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:59:02,635 INFO L225 Difference]: With dead ends: 93 [2023-12-25 04:59:02,635 INFO L226 Difference]: Without dead ends: 88 [2023-12-25 04:59:02,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 68.0s TimeCoverageRelationStatistics Valid=162, Invalid=646, Unknown=4, NotChecked=0, Total=812 [2023-12-25 04:59:02,636 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-25 04:59:02,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 425 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-25 04:59:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-25 04:59:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-25 04:59:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 04:59:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2023-12-25 04:59:02,646 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 69 [2023-12-25 04:59:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:59:02,646 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2023-12-25 04:59:02,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-25 04:59:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2023-12-25 04:59:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 04:59:02,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:59:02,647 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1] [2023-12-25 04:59:02,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 04:59:02,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-25 04:59:03,076 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=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 04:59:03,076 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:59:03,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:59:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1095565974, now seen corresponding path program 8 times [2023-12-25 04:59:03,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:59:03,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255932556] [2023-12-25 04:59:03,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 04:59:03,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:59:03,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:59:03,078 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:59:03,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 04:59:04,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 04:59:04,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 04:59:04,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 04:59:04,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:59:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 04:59:06,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 05:00:47,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 05:00:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255932556] [2023-12-25 05:00:47,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255932556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 05:00:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1646434510] [2023-12-25 05:00:47,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 05:00:47,478 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 05:00:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 05:00:47,480 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 05:00:47,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-25 05:00:49,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 05:00:49,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 05:00:49,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 05:00:49,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:00:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 05:00:51,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 05:01:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1646434510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 05:01:25,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 05:01:25,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2023-12-25 05:01:25,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003335926] [2023-12-25 05:01:25,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 05:01:25,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 05:01:25,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 05:01:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 05:01:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=645, Unknown=2, NotChecked=0, Total=812 [2023-12-25 05:01:25,400 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-25 05:01:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 05:01:33,932 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2023-12-25 05:01:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 05:01:33,933 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 77 [2023-12-25 05:01:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 05:01:33,933 INFO L225 Difference]: With dead ends: 93 [2023-12-25 05:01:33,933 INFO L226 Difference]: Without dead ends: 88 [2023-12-25 05:01:33,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 73.3s TimeCoverageRelationStatistics Valid=185, Invalid=743, Unknown=2, NotChecked=0, Total=930 [2023-12-25 05:01:33,934 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-25 05:01:33,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 469 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-25 05:01:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-25 05:01:33,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-25 05:01:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 05:01:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2023-12-25 05:01:33,943 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 77 [2023-12-25 05:01:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 05:01:33,944 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2023-12-25 05:01:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-25 05:01:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2023-12-25 05:01:33,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 05:01:33,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 05:01:33,948 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2023-12-25 05:01:34,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-12-25 05:01:34,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-25 05:01:34,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 05:01:34,357 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 05:01:34,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 05:01:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash 241815804, now seen corresponding path program 9 times [2023-12-25 05:01:34,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 05:01:34,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856520743] [2023-12-25 05:01:34,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 05:01:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 05:01:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 05:01:34,360 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 05:01:34,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-25 05:01:36,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-25 05:01:36,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 05:01:37,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 05:01:37,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 05:01:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-25 05:01:39,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-25 05:03:35,362 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 (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 05:03:35,362 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 05:03:36,410 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 (24)] Ended with exit code 0 [2023-12-25 05:03:36,562 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-25 05:03:36,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-25 05:03:36,582 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 05:03:36,583 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 86 with TraceHistMax 11,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-25 05:03:36,587 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1, 1] [2023-12-25 05:03:36,588 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 05:03:36,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 05:03:36 BoogieIcfgContainer [2023-12-25 05:03:36,589 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 05:03:36,590 INFO L158 Benchmark]: Toolchain (without parser) took 889246.19ms. Allocated memory is still 250.6MB. Free memory was 198.8MB in the beginning and 109.9MB in the end (delta: 89.0MB). Peak memory consumption was 89.8MB. Max. memory is 8.0GB. [2023-12-25 05:03:36,590 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 208.7MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 05:03:36,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.96ms. Allocated memory is still 250.6MB. Free memory was 198.6MB in the beginning and 187.2MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 05:03:36,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.08ms. Allocated memory is still 250.6MB. Free memory was 187.2MB in the beginning and 185.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 05:03:36,590 INFO L158 Benchmark]: Boogie Preprocessor took 24.72ms. Allocated memory is still 250.6MB. Free memory was 185.5MB in the beginning and 183.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 05:03:36,590 INFO L158 Benchmark]: RCFGBuilder took 363.87ms. Allocated memory is still 250.6MB. Free memory was 183.6MB in the beginning and 171.9MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 05:03:36,591 INFO L158 Benchmark]: TraceAbstraction took 888660.29ms. Allocated memory is still 250.6MB. Free memory was 171.0MB in the beginning and 109.9MB in the end (delta: 61.1MB). Peak memory consumption was 62.5MB. Max. memory is 8.0GB. [2023-12-25 05:03:36,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 208.7MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.96ms. Allocated memory is still 250.6MB. Free memory was 198.6MB in the beginning and 187.2MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.08ms. Allocated memory is still 250.6MB. Free memory was 187.2MB in the beginning and 185.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.72ms. Allocated memory is still 250.6MB. Free memory was 185.5MB in the beginning and 183.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 363.87ms. Allocated memory is still 250.6MB. Free memory was 183.6MB in the beginning and 171.9MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 888660.29ms. Allocated memory is still 250.6MB. Free memory was 171.0MB in the beginning and 109.9MB in the end (delta: 61.1MB). Peak memory consumption was 62.5MB. 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: 12]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 12). Cancelled while NwaCegarLoop was analyzing trace of length 86 with TraceHistMax 11,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 888.6s, OverallIterations: 15, TraceHistogramMax: 11, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 61.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 45.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 2447 SdHoareTripleChecker+Invalid, 40.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2131 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1422 IncrementalHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 316 mSDtfsCounter, 1422 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1614 GetRequests, 1398 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 362.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=9, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 35 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 21.9s SatisfiabilityAnalysisTime, 677.7s InterpolantComputationTime, 873 NumberOfCodeBlocks, 873 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 917 ConstructedInterpolants, 0 QuantifiedInterpolants, 5163 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1768 ConjunctsInSsa, 314 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 1171/2242 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