/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-patterns/array6_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:46:15,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:46:15,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:46:15,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 19:46:15,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:46:15,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:46:15,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:46:15,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:46:15,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:46:15,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:46:15,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:46:15,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:46:15,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:46:15,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:46:15,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:46:15,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:46:15,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 19:46:15,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:46:15,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:46:15,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:46:15,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 19:46:15,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:46:15,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:46:15,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:46:15,368 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:46:15,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:46:15,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:46:15,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:46:15,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:46:15,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:46:15,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:46:15,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:46:15,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:46:15,369 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:46:15,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:46:15,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:46:15,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:46:15,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:46:15,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:46:15,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:46:15,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:46:15,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:46:15,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:46:15,371 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:46:15,371 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:46:15,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:46:15,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:46:15,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:46:15,608 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:46:15,608 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:46:15,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array6_pattern.c [2022-01-31 19:46:15,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a97cd0bc/ff4e02ee84ac441d9d72a580a68cb0a9/FLAGab011606f [2022-01-31 19:46:16,008 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:46:16,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array6_pattern.c [2022-01-31 19:46:16,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a97cd0bc/ff4e02ee84ac441d9d72a580a68cb0a9/FLAGab011606f [2022-01-31 19:46:16,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a97cd0bc/ff4e02ee84ac441d9d72a580a68cb0a9 [2022-01-31 19:46:16,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:46:16,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:46:16,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:46:16,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:46:16,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:46:16,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0e6561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16, skipping insertion in model container [2022-01-31 19:46:16,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:46:16,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:46:16,539 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/array6_pattern.c[1356,1369] [2022-01-31 19:46:16,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:46:16,568 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:46:16,587 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/array6_pattern.c[1356,1369] [2022-01-31 19:46:16,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:46:16,612 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:46:16,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16 WrapperNode [2022-01-31 19:46:16,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:46:16,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:46:16,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:46:16,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:46:16,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:46:16,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:46:16,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:46:16,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:46:16,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (1/1) ... [2022-01-31 19:46:16,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:46:16,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:46:16,707 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) [2022-01-31 19:46:16,716 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 [2022-01-31 19:46:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:46:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:46:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:46:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 19:46:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 19:46:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:46:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:46:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:46:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:46:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:46:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 19:46:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 19:46:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 19:46:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 19:46:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:46:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 19:46:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:46:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:46:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:46:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:46:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:46:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:46:16,821 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:46:16,823 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:46:16,980 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:46:16,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:46:16,985 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 19:46:16,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:46:16 BoogieIcfgContainer [2022-01-31 19:46:16,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:46:16,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:46:16,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:46:17,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:46:17,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:46:16" (1/3) ... [2022-01-31 19:46:17,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536bf27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:46:17, skipping insertion in model container [2022-01-31 19:46:17,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:46:16" (2/3) ... [2022-01-31 19:46:17,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536bf27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:46:17, skipping insertion in model container [2022-01-31 19:46:17,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:46:16" (3/3) ... [2022-01-31 19:46:17,002 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-01-31 19:46:17,006 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:46:17,007 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:46:17,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:46:17,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=JORDAN [2022-01-31 19:46:17,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:46:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:46:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 19:46:17,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:17,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:17,063 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:17,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:17,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2099746046, now seen corresponding path program 1 times [2022-01-31 19:46:17,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:17,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385240846] [2022-01-31 19:46:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:17,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:17,130 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:46:17,310 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385240846] [2022-01-31 19:46:17,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385240846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:17,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:17,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:46:17,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296278167] [2022-01-31 19:46:17,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:17,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:46:17,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:17,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:46:17,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:46:17,348 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 19:46:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:17,429 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2022-01-31 19:46:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:46:17,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-01-31 19:46:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:17,443 INFO L225 Difference]: With dead ends: 59 [2022-01-31 19:46:17,443 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 19:46:17,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:46:17,452 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:17,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:46:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 19:46:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 19:46:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:46:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-31 19:46:17,503 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 20 [2022-01-31 19:46:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:17,503 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-31 19:46:17,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 19:46:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-31 19:46:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 19:46:17,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:17,505 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:46:17,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:46:17,506 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:17,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:17,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1248922269, now seen corresponding path program 1 times [2022-01-31 19:46:17,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:17,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075943102] [2022-01-31 19:46:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:17,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:17,517 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 19:46:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 19:46:17,694 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:17,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075943102] [2022-01-31 19:46:17,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1075943102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:17,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:17,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:46:17,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073749971] [2022-01-31 19:46:17,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:17,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:46:17,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:17,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:46:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:46:17,697 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:46:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:17,789 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-01-31 19:46:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 19:46:17,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-01-31 19:46:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:17,792 INFO L225 Difference]: With dead ends: 32 [2022-01-31 19:46:17,792 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 19:46:17,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:46:17,797 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:17,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:46:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 19:46:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 19:46:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:46:17,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-31 19:46:17,804 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 27 [2022-01-31 19:46:17,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:17,805 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-31 19:46:17,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:46:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-31 19:46:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 19:46:17,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:17,806 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 19:46:17,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:46:17,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:17,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1388943525, now seen corresponding path program 1 times [2022-01-31 19:46:17,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:17,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414345864] [2022-01-31 19:46:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:17,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:17,810 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:46:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:46:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 19:46:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:46:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 19:46:17,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:46:17,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414345864] [2022-01-31 19:46:17,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [414345864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:46:17,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:46:17,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:46:17,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057815506] [2022-01-31 19:46:17,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:46:17,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:46:17,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:46:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:46:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:46:17,960 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:46:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:46:18,063 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-01-31 19:46:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 19:46:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-01-31 19:46:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:46:18,064 INFO L225 Difference]: With dead ends: 47 [2022-01-31 19:46:18,064 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 19:46:18,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:46:18,072 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:46:18,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 50 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:46:18,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 19:46:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-31 19:46:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:46:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-31 19:46:18,086 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 29 [2022-01-31 19:46:18,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:46:18,087 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-31 19:46:18,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 19:46:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-31 19:46:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 19:46:18,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:46:18,088 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 19:46:18,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:46:18,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:46:18,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:46:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1359228967, now seen corresponding path program 1 times [2022-01-31 19:46:18,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:46:18,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288632164] [2022-01-31 19:46:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:46:18,133 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:46:18,134 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:46:18,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:46:18,139 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:46:18,161 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 19:46:18,161 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 19:46:18,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 19:46:18,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:46:18,175 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 19:46:18,176 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 19:46:18,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 07:46:18 BoogieIcfgContainer [2022-01-31 19:46:18,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 19:46:18,189 INFO L158 Benchmark]: Toolchain (without parser) took 1779.47ms. Allocated memory was 184.5MB in the beginning and 254.8MB in the end (delta: 70.3MB). Free memory was 129.3MB in the beginning and 154.6MB in the end (delta: -25.3MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2022-01-31 19:46:18,189 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 19:46:18,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.60ms. Allocated memory was 184.5MB in the beginning and 254.8MB in the end (delta: 70.3MB). Free memory was 129.1MB in the beginning and 229.1MB in the end (delta: -100.0MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2022-01-31 19:46:18,191 INFO L158 Benchmark]: Boogie Preprocessor took 43.85ms. Allocated memory is still 254.8MB. Free memory was 229.1MB in the beginning and 227.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 19:46:18,191 INFO L158 Benchmark]: RCFGBuilder took 320.56ms. Allocated memory is still 254.8MB. Free memory was 226.7MB in the beginning and 214.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 19:46:18,192 INFO L158 Benchmark]: TraceAbstraction took 1197.11ms. Allocated memory is still 254.8MB. Free memory was 213.9MB in the beginning and 154.6MB in the end (delta: 59.2MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2022-01-31 19:46:18,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.60ms. Allocated memory was 184.5MB in the beginning and 254.8MB in the end (delta: 70.3MB). Free memory was 129.1MB in the beginning and 229.1MB in the end (delta: -100.0MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.85ms. Allocated memory is still 254.8MB. Free memory was 229.1MB in the beginning and 227.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 320.56ms. Allocated memory is still 254.8MB. Free memory was 226.7MB in the beginning and 214.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1197.11ms. Allocated memory is still 254.8MB. Free memory was 213.9MB in the beginning and 154.6MB in the end (delta: 59.2MB). Peak memory consumption was 59.8MB. 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 - UnprovableResult [Line: 33]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L37] signed long long ARR_SIZE ; [L41] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L42] CALL assume_abort_if_not(ARR_SIZE > 0) [L31] COND FALSE !(!cond) [L42] RET assume_abort_if_not(ARR_SIZE > 0) [L44] int array1[ARR_SIZE] ; [L45] int array2[ARR_SIZE] ; [L46] int count = 0, num = -1 ; [L47] signed long long sum = 0 ; [L48] int temp ; [L49] short index ; [L51] count=0 [L51] COND TRUE count 0 && index < ARR_SIZE-1) [L31] COND FALSE !(!cond) [L61] RET assume_abort_if_not(index > 0 && index < ARR_SIZE-1) [L63] EXPR array1[index-1] [L63] EXPR array1[index+1] [L63] array1[index] = array1[index-1] + array1[index+1] [L64] EXPR array2[index-1] [L64] EXPR array2[index+1] [L64] array2[index] = array2[index-1] + array2[index+1] [L66] temp = __VERIFIER_nondet_int() [L67] COND TRUE temp == 0 [L70] count=0 [L70] COND TRUE count