/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:00:30,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:00:31,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:00:31,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:00:31,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:00:31,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:00:31,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:00:31,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:00:31,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:00:31,067 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:00:31,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:00:31,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:00:31,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:00:31,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:00:31,070 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:00:31,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:00:31,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:00:31,071 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:00:31,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:00:31,071 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:00:31,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:00:31,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:00:31,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:00:31,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:00:31,073 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:00:31,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:00:31,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:00:31,073 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:00:31,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:00:31,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:00:31,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:00:31,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:00:31,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:00:31,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:00:31,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:00:31,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:00:31,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:00:31,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:00:31,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:00:31,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:00:31,076 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:00:31,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:00:31,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:00:31,077 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:00:31,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:00:31,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:00:31,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:00:31,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:00:31,280 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:00:31,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i [2023-12-15 21:00:32,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:00:32,611 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:00:32,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i [2023-12-15 21:00:32,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47467d8d3/21a0a00b1bbb4b5997093a9da348e00f/FLAGae694b4e4 [2023-12-15 21:00:32,640 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47467d8d3/21a0a00b1bbb4b5997093a9da348e00f [2023-12-15 21:00:32,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:00:32,644 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:00:32,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:00:32,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:00:32,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:00:32,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:32,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f70d7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32, skipping insertion in model container [2023-12-15 21:00:32,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:32,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:00:32,791 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i[915,928] [2023-12-15 21:00:32,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:00:32,866 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:00:32,876 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i[915,928] [2023-12-15 21:00:32,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:00:32,929 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:00:32,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32 WrapperNode [2023-12-15 21:00:32,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:00:32,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:00:32,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:00:32,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:00:32,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:32,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:32,994 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 168 [2023-12-15 21:00:32,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:00:32,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:00:32,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:00:32,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:00:33,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,033 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]. [2023-12-15 21:00:33,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:00:33,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:00:33,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:00:33,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:00:33,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (1/1) ... [2023-12-15 21:00:33,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:00:33,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:00:33,113 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) [2023-12-15 21:00:33,141 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 [2023-12-15 21:00:33,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:00:33,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:00:33,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:00:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:00:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:00:33,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:00:33,240 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:00:33,265 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:00:33,675 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:00:33,713 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:00:33,713 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:00:33,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:00:33 BoogieIcfgContainer [2023-12-15 21:00:33,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:00:33,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:00:33,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:00:33,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:00:33,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:00:32" (1/3) ... [2023-12-15 21:00:33,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af4f2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:00:33, skipping insertion in model container [2023-12-15 21:00:33,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:00:32" (2/3) ... [2023-12-15 21:00:33,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af4f2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:00:33, skipping insertion in model container [2023-12-15 21:00:33,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:00:33" (3/3) ... [2023-12-15 21:00:33,723 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-28.i [2023-12-15 21:00:33,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:00:33,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:00:33,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:00:33,791 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;@53d8faf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:00:33,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:00:33,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-15 21:00:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:00:33,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:00:33,815 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:00:33,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:00:33,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:00:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1436323329, now seen corresponding path program 1 times [2023-12-15 21:00:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:00:33,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102612258] [2023-12-15 21:00:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:00:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:00:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:00:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102612258] [2023-12-15 21:00:33,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:00:33,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136349078] [2023-12-15 21:00:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:33,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:33,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:00:34,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:00:34,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:00:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:00:34,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:00:34,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:00:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-12-15 21:00:34,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:00:34,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136349078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:00:34,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:00:34,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:00:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111264153] [2023-12-15 21:00:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:00:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:00:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:00:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:00:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:00:34,275 INFO L87 Difference]: Start difference. First operand has 69 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-15 21:00:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:00:34,306 INFO L93 Difference]: Finished difference Result 135 states and 234 transitions. [2023-12-15 21:00:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:00:34,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 142 [2023-12-15 21:00:34,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:00:34,314 INFO L225 Difference]: With dead ends: 135 [2023-12-15 21:00:34,314 INFO L226 Difference]: Without dead ends: 67 [2023-12-15 21:00:34,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:00:34,320 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:00:34,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:00:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-15 21:00:34,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-12-15 21:00:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-15 21:00:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 102 transitions. [2023-12-15 21:00:34,360 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 102 transitions. Word has length 142 [2023-12-15 21:00:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:00:34,361 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 102 transitions. [2023-12-15 21:00:34,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-15 21:00:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 102 transitions. [2023-12-15 21:00:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:00:34,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:00:34,366 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:00:34,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:00:34,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:00:34,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:00:34,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:00:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 115004999, now seen corresponding path program 1 times [2023-12-15 21:00:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:00:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277090286] [2023-12-15 21:00:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:00:34,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:00:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750074570] [2023-12-15 21:00:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:34,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:34,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:00:34,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:00:34,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:00:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:00:34,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:00:34,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:00:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:00:35,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:00:35,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:00:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277090286] [2023-12-15 21:00:35,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:00:35,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750074570] [2023-12-15 21:00:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750074570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:00:35,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:00:35,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:00:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476811573] [2023-12-15 21:00:35,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:00:35,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:00:35,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:00:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:00:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:00:35,073 INFO L87 Difference]: Start difference. First operand 67 states and 102 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:00:35,367 INFO L93 Difference]: Finished difference Result 300 states and 458 transitions. [2023-12-15 21:00:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:00:35,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:00:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:00:35,377 INFO L225 Difference]: With dead ends: 300 [2023-12-15 21:00:35,377 INFO L226 Difference]: Without dead ends: 234 [2023-12-15 21:00:35,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:00:35,383 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 288 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:00:35,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 369 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:00:35,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-15 21:00:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 135. [2023-12-15 21:00:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 88 states have internal predecessors, (118), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 21:00:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 206 transitions. [2023-12-15 21:00:35,435 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 206 transitions. Word has length 142 [2023-12-15 21:00:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:00:35,436 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 206 transitions. [2023-12-15 21:00:35,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 206 transitions. [2023-12-15 21:00:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:00:35,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:00:35,443 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:00:35,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:00:35,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:00:35,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:00:35,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:00:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1890012361, now seen corresponding path program 1 times [2023-12-15 21:00:35,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:00:35,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75338297] [2023-12-15 21:00:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:35,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:00:35,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:00:35,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723100778] [2023-12-15 21:00:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:35,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:35,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:00:35,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:00:35,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:00:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:00:35,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 21:00:35,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:00:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:00:43,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:00:43,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:00:43,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75338297] [2023-12-15 21:00:43,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:00:43,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723100778] [2023-12-15 21:00:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723100778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:00:43,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:00:43,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:00:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806824012] [2023-12-15 21:00:43,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:00:43,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:00:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:00:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:00:43,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:00:43,220 INFO L87 Difference]: Start difference. First operand 135 states and 206 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:00:44,591 INFO L93 Difference]: Finished difference Result 375 states and 559 transitions. [2023-12-15 21:00:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 21:00:44,593 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:00:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:00:44,595 INFO L225 Difference]: With dead ends: 375 [2023-12-15 21:00:44,595 INFO L226 Difference]: Without dead ends: 241 [2023-12-15 21:00:44,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:00:44,597 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 395 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:00:44,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 537 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:00:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-15 21:00:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 165. [2023-12-15 21:00:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 109 states have (on average 1.3211009174311927) internal successors, (144), 110 states have internal predecessors, (144), 52 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 21:00:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2023-12-15 21:00:44,628 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 142 [2023-12-15 21:00:44,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:00:44,630 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2023-12-15 21:00:44,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:44,630 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2023-12-15 21:00:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:00:44,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:00:44,633 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:00:44,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:00:44,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:44,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:00:44,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:00:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash -565053371, now seen corresponding path program 1 times [2023-12-15 21:00:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:00:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623405915] [2023-12-15 21:00:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:44,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:00:44,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:00:44,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14565736] [2023-12-15 21:00:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:44,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:44,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:00:44,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:00:44,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:00:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:00:44,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 21:00:44,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:00:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:00:49,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:00:49,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:00:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623405915] [2023-12-15 21:00:49,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:00:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14565736] [2023-12-15 21:00:49,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14565736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:00:49,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:00:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 21:00:49,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320347728] [2023-12-15 21:00:49,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:00:49,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:00:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:00:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:00:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:00:49,673 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:00:50,893 INFO L93 Difference]: Finished difference Result 404 states and 591 transitions. [2023-12-15 21:00:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 21:00:50,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:00:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:00:50,898 INFO L225 Difference]: With dead ends: 404 [2023-12-15 21:00:50,898 INFO L226 Difference]: Without dead ends: 252 [2023-12-15 21:00:50,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:00:50,907 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 313 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:00:50,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 583 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:00:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-15 21:00:50,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 174. [2023-12-15 21:00:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.3220338983050848) internal successors, (156), 119 states have internal predecessors, (156), 52 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 21:00:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 260 transitions. [2023-12-15 21:00:50,931 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 260 transitions. Word has length 142 [2023-12-15 21:00:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:00:50,934 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 260 transitions. [2023-12-15 21:00:50,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 260 transitions. [2023-12-15 21:00:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:00:50,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:00:50,936 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:00:50,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:00:51,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:51,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:00:51,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:00:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1303206347, now seen corresponding path program 1 times [2023-12-15 21:00:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:00:51,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203446573] [2023-12-15 21:00:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:00:51,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:00:51,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056376042] [2023-12-15 21:00:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:51,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:51,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:00:51,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:00:51,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:00:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:00:51,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:00:51,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:00:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:00:57,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:00:57,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:00:57,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203446573] [2023-12-15 21:00:57,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:00:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056376042] [2023-12-15 21:00:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056376042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:00:57,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:00:57,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 21:00:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046464607] [2023-12-15 21:00:57,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:00:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:00:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:00:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:00:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:00:57,422 INFO L87 Difference]: Start difference. First operand 174 states and 260 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:00:58,743 INFO L93 Difference]: Finished difference Result 406 states and 593 transitions. [2023-12-15 21:00:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 21:00:58,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:00:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:00:58,745 INFO L225 Difference]: With dead ends: 406 [2023-12-15 21:00:58,745 INFO L226 Difference]: Without dead ends: 245 [2023-12-15 21:00:58,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:00:58,746 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 280 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:00:58,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 581 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:00:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-15 21:00:58,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 181. [2023-12-15 21:00:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 125 states have (on average 1.336) internal successors, (167), 126 states have internal predecessors, (167), 52 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 21:00:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 271 transitions. [2023-12-15 21:00:58,774 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 271 transitions. Word has length 142 [2023-12-15 21:00:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:00:58,774 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 271 transitions. [2023-12-15 21:00:58,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:00:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 271 transitions. [2023-12-15 21:00:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:00:58,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:00:58,781 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:00:58,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:00:58,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:58,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:00:58,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:00:58,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1151859385, now seen corresponding path program 1 times [2023-12-15 21:00:58,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:00:58,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917139951] [2023-12-15 21:00:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:58,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:00:59,026 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:00:59,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750812568] [2023-12-15 21:00:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:00:59,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:00:59,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:00:59,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:00:59,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:00:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:00:59,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:00:59,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:04,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:04,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917139951] [2023-12-15 21:01:04,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750812568] [2023-12-15 21:01:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750812568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:04,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:04,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 21:01:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292823199] [2023-12-15 21:01:04,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:01:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:01:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:01:04,947 INFO L87 Difference]: Start difference. First operand 181 states and 271 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:05,963 INFO L93 Difference]: Finished difference Result 494 states and 723 transitions. [2023-12-15 21:01:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 21:01:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:01:05,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:05,966 INFO L225 Difference]: With dead ends: 494 [2023-12-15 21:01:05,966 INFO L226 Difference]: Without dead ends: 326 [2023-12-15 21:01:05,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:01:05,967 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 205 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:05,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 525 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:01:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-12-15 21:01:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 229. [2023-12-15 21:01:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 164 states have (on average 1.3475609756097562) internal successors, (221), 166 states have internal predecessors, (221), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 21:01:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 341 transitions. [2023-12-15 21:01:05,984 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 341 transitions. Word has length 142 [2023-12-15 21:01:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:05,985 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 341 transitions. [2023-12-15 21:01:05,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 341 transitions. [2023-12-15 21:01:05,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:01:05,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:05,986 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:05,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:06,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:06,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 610148683, now seen corresponding path program 1 times [2023-12-15 21:01:06,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:06,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484817953] [2023-12-15 21:01:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:06,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:06,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574106943] [2023-12-15 21:01:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:06,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:06,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:06,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:06,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:01:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:06,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 21:01:06,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:08,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484817953] [2023-12-15 21:01:08,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574106943] [2023-12-15 21:01:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574106943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:08,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:01:08,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722127969] [2023-12-15 21:01:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:08,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:01:08,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:01:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:01:08,817 INFO L87 Difference]: Start difference. First operand 229 states and 341 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:09,242 INFO L93 Difference]: Finished difference Result 516 states and 755 transitions. [2023-12-15 21:01:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 21:01:09,243 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:01:09,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:09,250 INFO L225 Difference]: With dead ends: 516 [2023-12-15 21:01:09,251 INFO L226 Difference]: Without dead ends: 300 [2023-12-15 21:01:09,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:01:09,253 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 226 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:09,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 581 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:01:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-15 21:01:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 236. [2023-12-15 21:01:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 171 states have (on average 1.3567251461988303) internal successors, (232), 173 states have internal predecessors, (232), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 21:01:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 352 transitions. [2023-12-15 21:01:09,275 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 352 transitions. Word has length 142 [2023-12-15 21:01:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:09,276 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 352 transitions. [2023-12-15 21:01:09,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 352 transitions. [2023-12-15 21:01:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:01:09,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:09,278 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:09,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:09,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:09,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:09,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1844917049, now seen corresponding path program 1 times [2023-12-15 21:01:09,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032870786] [2023-12-15 21:01:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:09,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:09,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462139023] [2023-12-15 21:01:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:09,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:09,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:09,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:09,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:01:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:09,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 21:01:09,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:13,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:13,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032870786] [2023-12-15 21:01:13,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462139023] [2023-12-15 21:01:13,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462139023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:13,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:13,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:01:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639137263] [2023-12-15 21:01:13,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:01:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:01:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:01:13,278 INFO L87 Difference]: Start difference. First operand 236 states and 352 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:14,055 INFO L93 Difference]: Finished difference Result 545 states and 797 transitions. [2023-12-15 21:01:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:01:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:01:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:14,058 INFO L225 Difference]: With dead ends: 545 [2023-12-15 21:01:14,058 INFO L226 Difference]: Without dead ends: 322 [2023-12-15 21:01:14,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:01:14,059 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 156 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:14,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 517 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:01:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-15 21:01:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 247. [2023-12-15 21:01:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 182 states have (on average 1.3681318681318682) internal successors, (249), 184 states have internal predecessors, (249), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 21:01:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 369 transitions. [2023-12-15 21:01:14,076 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 369 transitions. Word has length 142 [2023-12-15 21:01:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:14,077 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 369 transitions. [2023-12-15 21:01:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 369 transitions. [2023-12-15 21:01:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:01:14,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:14,078 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:14,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:01:14,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:14,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash 23342669, now seen corresponding path program 1 times [2023-12-15 21:01:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:14,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851739903] [2023-12-15 21:01:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:14,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:14,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664868027] [2023-12-15 21:01:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:14,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:14,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:14,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:01:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:14,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:01:14,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:17,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:17,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:17,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851739903] [2023-12-15 21:01:17,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:17,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664868027] [2023-12-15 21:01:17,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664868027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:17,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:17,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:01:17,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832644357] [2023-12-15 21:01:17,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:17,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:01:17,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:17,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:01:17,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:01:17,640 INFO L87 Difference]: Start difference. First operand 247 states and 369 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:17,971 INFO L93 Difference]: Finished difference Result 561 states and 820 transitions. [2023-12-15 21:01:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:01:17,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:01:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:17,974 INFO L225 Difference]: With dead ends: 561 [2023-12-15 21:01:17,974 INFO L226 Difference]: Without dead ends: 327 [2023-12-15 21:01:17,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:01:17,975 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 152 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:17,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 619 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:01:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-15 21:01:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 255. [2023-12-15 21:01:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 190 states have (on average 1.368421052631579) internal successors, (260), 192 states have internal predecessors, (260), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 21:01:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 380 transitions. [2023-12-15 21:01:17,991 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 380 transitions. Word has length 142 [2023-12-15 21:01:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:17,992 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 380 transitions. [2023-12-15 21:01:17,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 380 transitions. [2023-12-15 21:01:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:01:17,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:17,993 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:18,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:18,204 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:18,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1863244233, now seen corresponding path program 1 times [2023-12-15 21:01:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503313075] [2023-12-15 21:01:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:18,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:18,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084661808] [2023-12-15 21:01:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:18,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:18,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:18,231 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:18,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:01:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:18,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:01:18,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:22,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503313075] [2023-12-15 21:01:22,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084661808] [2023-12-15 21:01:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084661808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:22,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:01:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368146576] [2023-12-15 21:01:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:01:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:01:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:01:22,131 INFO L87 Difference]: Start difference. First operand 255 states and 380 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:22,477 INFO L93 Difference]: Finished difference Result 569 states and 827 transitions. [2023-12-15 21:01:22,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:01:22,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 21:01:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:22,481 INFO L225 Difference]: With dead ends: 569 [2023-12-15 21:01:22,481 INFO L226 Difference]: Without dead ends: 327 [2023-12-15 21:01:22,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:01:22,482 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 164 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:22,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 583 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:01:22,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-15 21:01:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 243. [2023-12-15 21:01:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 178 states have (on average 1.353932584269663) internal successors, (241), 180 states have internal predecessors, (241), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 21:01:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 361 transitions. [2023-12-15 21:01:22,499 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 361 transitions. Word has length 142 [2023-12-15 21:01:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:22,500 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 361 transitions. [2023-12-15 21:01:22,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 361 transitions. [2023-12-15 21:01:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 21:01:22,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:22,501 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:22,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:22,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:01:22,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:22,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:22,707 INFO L85 PathProgramCache]: Analyzing trace with hash -675470308, now seen corresponding path program 1 times [2023-12-15 21:01:22,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:22,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485467377] [2023-12-15 21:01:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:22,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:22,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:22,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556554405] [2023-12-15 21:01:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:22,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:22,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:22,734 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:22,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:01:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:22,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 21:01:22,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:25,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:25,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:25,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485467377] [2023-12-15 21:01:25,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:25,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556554405] [2023-12-15 21:01:25,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556554405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:25,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:25,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 21:01:25,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984555938] [2023-12-15 21:01:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:25,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:01:25,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:01:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:01:25,697 INFO L87 Difference]: Start difference. First operand 243 states and 361 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:26,661 INFO L93 Difference]: Finished difference Result 486 states and 701 transitions. [2023-12-15 21:01:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 21:01:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 21:01:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:26,663 INFO L225 Difference]: With dead ends: 486 [2023-12-15 21:01:26,664 INFO L226 Difference]: Without dead ends: 343 [2023-12-15 21:01:26,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:01:26,665 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 273 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:26,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 476 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:01:26,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-15 21:01:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 246. [2023-12-15 21:01:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 194 states have (on average 1.3505154639175259) internal successors, (262), 195 states have internal predecessors, (262), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 21:01:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 354 transitions. [2023-12-15 21:01:26,680 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 354 transitions. Word has length 143 [2023-12-15 21:01:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:26,680 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 354 transitions. [2023-12-15 21:01:26,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 354 transitions. [2023-12-15 21:01:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 21:01:26,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:26,682 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:26,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:26,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:01:26,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:26,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1355528678, now seen corresponding path program 1 times [2023-12-15 21:01:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153220027] [2023-12-15 21:01:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:26,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:26,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106826342] [2023-12-15 21:01:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:26,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:26,918 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:26,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:01:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:27,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:01:27,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:31,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153220027] [2023-12-15 21:01:31,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106826342] [2023-12-15 21:01:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106826342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 21:01:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133680886] [2023-12-15 21:01:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:31,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:01:31,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:01:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:01:31,639 INFO L87 Difference]: Start difference. First operand 246 states and 354 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:32,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:32,575 INFO L93 Difference]: Finished difference Result 494 states and 700 transitions. [2023-12-15 21:01:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 21:01:32,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 21:01:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:32,578 INFO L225 Difference]: With dead ends: 494 [2023-12-15 21:01:32,578 INFO L226 Difference]: Without dead ends: 336 [2023-12-15 21:01:32,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:01:32,579 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 244 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:32,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 551 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:01:32,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-15 21:01:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 248. [2023-12-15 21:01:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 196 states have (on average 1.3520408163265305) internal successors, (265), 197 states have internal predecessors, (265), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 21:01:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 357 transitions. [2023-12-15 21:01:32,595 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 357 transitions. Word has length 143 [2023-12-15 21:01:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:32,596 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 357 transitions. [2023-12-15 21:01:32,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:32,596 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 357 transitions. [2023-12-15 21:01:32,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 21:01:32,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:32,598 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:32,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:01:32,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:32,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1262276322, now seen corresponding path program 1 times [2023-12-15 21:01:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:32,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48230772] [2023-12-15 21:01:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:32,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:32,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571857140] [2023-12-15 21:01:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:32,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:32,833 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:32,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:01:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:32,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:01:32,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:01:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 21:01:32,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:01:32,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:01:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48230772] [2023-12-15 21:01:32,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:01:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571857140] [2023-12-15 21:01:32,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571857140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:01:32,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:01:32,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:01:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428387044] [2023-12-15 21:01:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:01:32,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:01:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:01:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:01:32,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:01:32,963 INFO L87 Difference]: Start difference. First operand 248 states and 357 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:01:33,069 INFO L93 Difference]: Finished difference Result 807 states and 1169 transitions. [2023-12-15 21:01:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:01:33,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 21:01:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:01:33,072 INFO L225 Difference]: With dead ends: 807 [2023-12-15 21:01:33,072 INFO L226 Difference]: Without dead ends: 647 [2023-12-15 21:01:33,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:01:33,073 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 182 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:01:33,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 315 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:01:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-15 21:01:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 270. [2023-12-15 21:01:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 218 states have (on average 1.3577981651376148) internal successors, (296), 219 states have internal predecessors, (296), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 21:01:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 388 transitions. [2023-12-15 21:01:33,100 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 388 transitions. Word has length 143 [2023-12-15 21:01:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:01:33,101 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 388 transitions. [2023-12-15 21:01:33,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 21:01:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 388 transitions. [2023-12-15 21:01:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 21:01:33,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:01:33,102 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:33,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:01:33,308 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:01:33,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:01:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash 512731040, now seen corresponding path program 1 times [2023-12-15 21:01:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:01:33,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858910849] [2023-12-15 21:01:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:01:33,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:01:33,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541270956] [2023-12-15 21:01:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:01:33,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:33,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:01:33,324 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:01:33,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:01:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:01:33,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:01:33,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 21:01:36,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:01:36,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:01:36,262 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:01:36,262 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 [2023-12-15 21:01:36,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:01:36,457 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 144 with TraceHistMax 22,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-7-6-5-4-4-3-3-3-3-3-3-2-2-1 context. [2023-12-15 21:01:36,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:01:36,463 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:01:36,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:01:36 BoogieIcfgContainer [2023-12-15 21:01:36,465 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:01:36,465 INFO L158 Benchmark]: Toolchain (without parser) took 63821.78ms. Allocated memory was 184.5MB in the beginning and 958.4MB in the end (delta: 773.8MB). Free memory was 138.1MB in the beginning and 572.4MB in the end (delta: -434.2MB). Peak memory consumption was 564.8MB. Max. memory is 8.0GB. [2023-12-15 21:01:36,466 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:01:36,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.14ms. Allocated memory is still 184.5MB. Free memory was 137.8MB in the beginning and 122.3MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:01:36,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.83ms. Allocated memory is still 184.5MB. Free memory was 122.3MB in the beginning and 116.5MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:01:36,466 INFO L158 Benchmark]: Boogie Preprocessor took 87.09ms. Allocated memory is still 184.5MB. Free memory was 116.5MB in the beginning and 105.3MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 21:01:36,467 INFO L158 Benchmark]: RCFGBuilder took 630.38ms. Allocated memory is still 184.5MB. Free memory was 105.3MB in the beginning and 135.1MB in the end (delta: -29.8MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2023-12-15 21:01:36,467 INFO L158 Benchmark]: TraceAbstraction took 62749.98ms. Allocated memory was 184.5MB in the beginning and 958.4MB in the end (delta: 773.8MB). Free memory was 134.5MB in the beginning and 572.4MB in the end (delta: -437.8MB). Peak memory consumption was 560.9MB. Max. memory is 8.0GB. [2023-12-15 21:01:36,475 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 285.14ms. Allocated memory is still 184.5MB. Free memory was 137.8MB in the beginning and 122.3MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.83ms. Allocated memory is still 184.5MB. Free memory was 122.3MB in the beginning and 116.5MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 87.09ms. Allocated memory is still 184.5MB. Free memory was 116.5MB in the beginning and 105.3MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 630.38ms. Allocated memory is still 184.5MB. Free memory was 105.3MB in the beginning and 135.1MB in the end (delta: -29.8MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * TraceAbstraction took 62749.98ms. Allocated memory was 184.5MB in the beginning and 958.4MB in the end (delta: 773.8MB). Free memory was 134.5MB in the beginning and 572.4MB in the end (delta: -437.8MB). Peak memory consumption was 560.9MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 144 with TraceHistMax 22,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-7-6-5-4-4-3-3-3-3-3-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.7s, OverallIterations: 14, TraceHistogramMax: 22, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2878 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2878 mSDsluCounter, 6336 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4757 mSDsCounter, 472 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3136 IncrementalHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 472 mSolverCounterUnsat, 1579 mSDtfsCounter, 3136 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1942 GetRequests, 1744 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=13, InterpolantAutomatonStates: 203, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1271 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 44.8s InterpolantComputationTime, 1991 NumberOfCodeBlocks, 1991 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1836 ConstructedInterpolants, 0 QuantifiedInterpolants, 15977 SizeOfPredicates, 211 NumberOfNonLiveVariables, 4379 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 12012/12012 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