/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-patterns/array21_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:15:46,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:15:46,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:15:46,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:15:46,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:15:46,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:15:46,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:15:46,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 23:15:46,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:15:46,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:15:46,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:15:46,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:15:46,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:15:46,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:15:46,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:15:46,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:15:46,911 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:15:46,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:15:46,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:15:46,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:15:46,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:15:46,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:15:46,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:15:46,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:15:46,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:15:46,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:15:46,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:15:46,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:15:46,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:15:46,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:15:46,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:15:46,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:15:46,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:15:46,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:15:46,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:15:46,915 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:15:46,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:15:46,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:15:46,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:15:47,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:15:47,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:15:47,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:15:47,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:15:47,145 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:15:47,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array21_pattern.c [2022-01-09 23:15:47,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64c03ddd/c139a184697b43e1b86e9f021eeeda18/FLAGa2a5138e6 [2022-01-09 23:15:47,582 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:15:47,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array21_pattern.c [2022-01-09 23:15:47,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64c03ddd/c139a184697b43e1b86e9f021eeeda18/FLAGa2a5138e6 [2022-01-09 23:15:47,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64c03ddd/c139a184697b43e1b86e9f021eeeda18 [2022-01-09 23:15:47,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:15:47,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:15:47,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:15:47,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:15:47,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:15:47,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:15:47" (1/1) ... [2022-01-09 23:15:47,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fd2035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:47, skipping insertion in model container [2022-01-09 23:15:47,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:15:47" (1/1) ... [2022-01-09 23:15:47,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:15:48,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:15:48,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array21_pattern.c[1340,1353] [2022-01-09 23:15:48,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:15:48,171 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:15:48,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array21_pattern.c[1340,1353] [2022-01-09 23:15:48,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:15:48,220 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:15:48,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48 WrapperNode [2022-01-09 23:15:48,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:15:48,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:15:48,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:15:48,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:15:48,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,251 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2022-01-09 23:15:48,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:15:48,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:15:48,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:15:48,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:15:48,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:15:48,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:15:48,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:15:48,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:15:48,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (1/1) ... [2022-01-09 23:15:48,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:15:48,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:48,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 23:15:48,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 23:15:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-01-09 23:15:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-01-09 23:15:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:15:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 23:15:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 23:15:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:15:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:15:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:15:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:15:48,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:15:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:15:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:15:48,389 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:15:48,390 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:15:48,627 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:15:48,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:15:48,632 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-09 23:15:48,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:15:48 BoogieIcfgContainer [2022-01-09 23:15:48,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:15:48,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:15:48,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:15:48,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:15:48,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:15:47" (1/3) ... [2022-01-09 23:15:48,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa4b142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:15:48, skipping insertion in model container [2022-01-09 23:15:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:48" (2/3) ... [2022-01-09 23:15:48,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa4b142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:15:48, skipping insertion in model container [2022-01-09 23:15:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:15:48" (3/3) ... [2022-01-09 23:15:48,667 INFO L111 eAbstractionObserver]: Analyzing ICFG array21_pattern.c [2022-01-09 23:15:48,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:15:48,671 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:15:48,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:15:48,733 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 23:15:48,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:15:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-09 23:15:48,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:48,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:48,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2022-01-09 23:15:48,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:48,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107729961] [2022-01-09 23:15:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:48,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 23:15:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:15:48,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:48,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107729961] [2022-01-09 23:15:48,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107729961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:15:48,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:15:48,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:15:48,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214304144] [2022-01-09 23:15:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:15:48,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:15:48,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:15:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:15:48,991 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 23:15:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:49,015 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2022-01-09 23:15:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:15:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-09 23:15:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:49,023 INFO L225 Difference]: With dead ends: 77 [2022-01-09 23:15:49,024 INFO L226 Difference]: Without dead ends: 36 [2022-01-09 23:15:49,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:15:49,032 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:49,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:15:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-09 23:15:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-09 23:15:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-01-09 23:15:49,073 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2022-01-09 23:15:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:49,074 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-01-09 23:15:49,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 23:15:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-01-09 23:15:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-09 23:15:49,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:49,079 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:49,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:15:49,080 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2022-01-09 23:15:49,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:49,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692546076] [2022-01-09 23:15:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:49,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:49,116 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:49,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732161284] [2022-01-09 23:15:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:49,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:49,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:49,118 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) [2022-01-09 23:15:49,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:15:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:49,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 23:15:49,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:15:49,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:15:49,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:49,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692546076] [2022-01-09 23:15:49,398 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:49,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732161284] [2022-01-09 23:15:49,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732161284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:15:49,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:15:49,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-09 23:15:49,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100905256] [2022-01-09 23:15:49,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:15:49,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-09 23:15:49,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-09 23:15:49,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:15:49,407 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:49,533 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-01-09 23:15:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-09 23:15:49,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-01-09 23:15:49,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:49,534 INFO L225 Difference]: With dead ends: 76 [2022-01-09 23:15:49,535 INFO L226 Difference]: Without dead ends: 48 [2022-01-09 23:15:49,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:15:49,536 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:49,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-09 23:15:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-01-09 23:15:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-01-09 23:15:49,545 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2022-01-09 23:15:49,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:49,546 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-01-09 23:15:49,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:49,546 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-01-09 23:15:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-09 23:15:49,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:49,548 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:49,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:49,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:49,772 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:49,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:49,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2022-01-09 23:15:49,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:49,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875225767] [2022-01-09 23:15:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:49,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:49,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:49,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155629919] [2022-01-09 23:15:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:49,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:49,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:49,788 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) [2022-01-09 23:15:49,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:15:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:49,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:15:49,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-09 23:15:49,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:15:49,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:49,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875225767] [2022-01-09 23:15:49,960 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:49,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155629919] [2022-01-09 23:15:49,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155629919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:15:49,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:15:49,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:15:49,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699280750] [2022-01-09 23:15:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:15:49,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:15:49,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:15:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:15:49,963 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:50,026 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-01-09 23:15:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:15:50,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-01-09 23:15:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:50,028 INFO L225 Difference]: With dead ends: 79 [2022-01-09 23:15:50,028 INFO L226 Difference]: Without dead ends: 46 [2022-01-09 23:15:50,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:15:50,031 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:50,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:15:50,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-09 23:15:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-01-09 23:15:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-01-09 23:15:50,047 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2022-01-09 23:15:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:50,048 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-01-09 23:15:50,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-01-09 23:15:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-09 23:15:50,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:50,051 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:50,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:50,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-09 23:15:50,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2022-01-09 23:15:50,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:50,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833707469] [2022-01-09 23:15:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:50,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:50,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:50,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702459171] [2022-01-09 23:15:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:50,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:50,285 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) [2022-01-09 23:15:50,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:15:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:50,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-09 23:15:50,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:15:50,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-09 23:15:50,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:50,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833707469] [2022-01-09 23:15:50,677 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:50,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702459171] [2022-01-09 23:15:50,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702459171] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:50,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:50,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-01-09 23:15:50,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610321940] [2022-01-09 23:15:50,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:50,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-09 23:15:50,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-09 23:15:50,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-09 23:15:50,681 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-09 23:15:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:50,891 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2022-01-09 23:15:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:15:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2022-01-09 23:15:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:50,893 INFO L225 Difference]: With dead ends: 85 [2022-01-09 23:15:50,893 INFO L226 Difference]: Without dead ends: 50 [2022-01-09 23:15:50,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-01-09 23:15:50,894 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:50,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 151 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:15:50,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-09 23:15:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-01-09 23:15:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-01-09 23:15:50,901 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2022-01-09 23:15:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:50,902 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-01-09 23:15:50,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-09 23:15:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-01-09 23:15:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-09 23:15:50,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:50,903 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:50,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:51,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:51,124 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:51,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2022-01-09 23:15:51,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:51,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949495155] [2022-01-09 23:15:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:51,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:51,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:51,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871874620] [2022-01-09 23:15:51,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:15:51,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:51,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:51,138 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) [2022-01-09 23:15:51,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:15:51,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:15:51,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:51,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:15:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 23:15:51,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-09 23:15:51,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949495155] [2022-01-09 23:15:51,463 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:51,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871874620] [2022-01-09 23:15:51,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871874620] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:51,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:51,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-09 23:15:51,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002257091] [2022-01-09 23:15:51,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:51,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-09 23:15:51,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-09 23:15:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-09 23:15:51,467 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-09 23:15:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:51,627 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2022-01-09 23:15:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 23:15:51,628 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-01-09 23:15:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:51,630 INFO L225 Difference]: With dead ends: 106 [2022-01-09 23:15:51,631 INFO L226 Difference]: Without dead ends: 74 [2022-01-09 23:15:51,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-09 23:15:51,632 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:51,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-09 23:15:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2022-01-09 23:15:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-01-09 23:15:51,642 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2022-01-09 23:15:51,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:51,642 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-01-09 23:15:51,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-09 23:15:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-01-09 23:15:51,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-09 23:15:51,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:51,643 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:51,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:51,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:51,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:51,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2022-01-09 23:15:51,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:51,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900483930] [2022-01-09 23:15:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:51,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:51,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:51,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545998707] [2022-01-09 23:15:51,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:15:51,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:51,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:51,859 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) [2022-01-09 23:15:51,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:15:52,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-09 23:15:52,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:52,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-09 23:15:52,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:52,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-01-09 23:15:52,579 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-01-09 23:15:52,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-01-09 23:15:52,699 INFO L353 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-01-09 23:15:52,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 51 [2022-01-09 23:15:52,853 INFO L353 Elim1Store]: treesize reduction 162, result has 26.4 percent of original size [2022-01-09 23:15:52,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 83 [2022-01-09 23:15:53,263 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:04,196 INFO L353 Elim1Store]: treesize reduction 229, result has 36.4 percent of original size [2022-01-09 23:16:04,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 159 [2022-01-09 23:16:05,230 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:05,291 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:05,452 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:06,371 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:06,428 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:06,610 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:07,012 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:07,231 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:07,330 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:08,052 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:08,108 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:08,495 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:10,003 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:10,102 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:10,249 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:10,545 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:10,816 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:10,905 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:11,700 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:11,760 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:12,162 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:13,547 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:13,619 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:13,727 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:14,058 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:14,256 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:14,380 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:15,337 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:15,409 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:15,783 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:17,237 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:17,309 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:17,443 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:17,863 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:18,128 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:18,223 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:18,997 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:19,058 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:19,391 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:20,869 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:21,019 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:21,072 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:21,542 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:21,610 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:21,949 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:22,748 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:23,009 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:23,129 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:24,597 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:24,689 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:24,757 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:25,233 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:25,283 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:25,583 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:26,135 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:26,324 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:26,434 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:27,736 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:27,776 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:28,250 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:28,292 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:28,613 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:30,160 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:30,214 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:30,716 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:30,770 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:31,083 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:32,615 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:32,674 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:33,131 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:33,193 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:33,530 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:35,239 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:35,322 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:35,750 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:35,805 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:36,201 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:37,697 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:37,791 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:38,279 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:38,333 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:38,740 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:40,339 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:40,488 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:40,982 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:41,082 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:41,477 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:43,338 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:43,436 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:43,975 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:44,085 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:44,453 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:16:45,847 INFO L353 Elim1Store]: treesize reduction 740, result has 26.7 percent of original size [2022-01-09 23:16:45,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 249 treesize of output 368