/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/array-patterns/array7_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:12:58,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:12:58,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:12:58,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:12:58,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:12:58,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:12:58,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:12:58,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:12:58,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:12:58,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:12:58,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:12:58,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:12:58,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:12:58,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:12:58,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:12:58,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:12:58,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:12:58,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:12:58,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:12:58,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:12:58,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:12:58,538 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:12:58,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:12:58,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:12:58,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:12:58,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:12:58,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:12:58,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:12:58,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:12:58,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:12:58,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:12:58,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:12:58,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:12:58,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:12:58,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:12:58,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:12:58,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:58,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:12:58,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:12:58,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:12:58,543 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:12:58,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:12:58,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:12:58,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:12:58,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:12:58,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:12:58,741 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:12:58,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array7_pattern.c [2022-01-31 23:12:58,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6356abc0b/55cfe717195548da823b1e21f43e06ce/FLAG7ccfc1f49 [2022-01-31 23:12:59,112 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:12:59,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c [2022-01-31 23:12:59,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6356abc0b/55cfe717195548da823b1e21f43e06ce/FLAG7ccfc1f49 [2022-01-31 23:12:59,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6356abc0b/55cfe717195548da823b1e21f43e06ce [2022-01-31 23:12:59,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:12:59,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:12:59,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:59,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:12:59,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:12:59,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6862fe82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59, skipping insertion in model container [2022-01-31 23:12:59,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:12:59,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:12:59,677 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/array7_pattern.c[1375,1388] [2022-01-31 23:12:59,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:59,718 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:12:59,726 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/array7_pattern.c[1375,1388] [2022-01-31 23:12:59,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:59,744 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:12:59,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59 WrapperNode [2022-01-31 23:12:59,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:59,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:12:59,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:12:59,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:12:59,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:12:59,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:12:59,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:12:59,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:12:59,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (1/1) ... [2022-01-31 23:12:59,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:59,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:12:59,812 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 23:12:59,837 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 23:12:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:12:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:12:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:12:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:12:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:12:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:12:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:12:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:12:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:12:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:12:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:12:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:12:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:12:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 23:12:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:12:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:12:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:12:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:12:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:12:59,936 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:12:59,938 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:13:00,054 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:13:00,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:13:00,060 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 23:13:00,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:13:00 BoogieIcfgContainer [2022-01-31 23:13:00,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:13:00,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:13:00,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:13:00,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:13:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:12:59" (1/3) ... [2022-01-31 23:13:00,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341c998c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:13:00, skipping insertion in model container [2022-01-31 23:13:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:59" (2/3) ... [2022-01-31 23:13:00,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341c998c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:13:00, skipping insertion in model container [2022-01-31 23:13:00,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:13:00" (3/3) ... [2022-01-31 23:13:00,076 INFO L111 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2022-01-31 23:13:00,080 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:13:00,080 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:13:00,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:13:00,116 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=QVASR [2022-01-31 23:13:00,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:13:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 23:13:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 23:13:00,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:13:00,135 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 23:13:00,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:13:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:13:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1775130296, now seen corresponding path program 1 times [2022-01-31 23:13:00,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:13:00,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345037202] [2022-01-31 23:13:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:13:00,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:13:00,196 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:13:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:13:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:13:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,356 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 23:13:00,357 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:13:00,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345037202] [2022-01-31 23:13:00,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [345037202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:13:00,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:13:00,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:13:00,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589547444] [2022-01-31 23:13:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:13:00,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:13:00,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:13:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:13:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:13:00,384 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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 23:13:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:13:00,464 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2022-01-31 23:13:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:13:00,468 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 23:13:00,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:13:00,474 INFO L225 Difference]: With dead ends: 61 [2022-01-31 23:13:00,474 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 23:13:00,476 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 23:13:00,482 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:13:00,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:13:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 23:13:00,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 23:13:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:13:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-31 23:13:00,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 20 [2022-01-31 23:13:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:13:00,533 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-31 23:13:00,534 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 23:13:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-31 23:13:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 23:13:00,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:13:00,536 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] [2022-01-31 23:13:00,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:13:00,537 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:13:00,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:13:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1947580205, now seen corresponding path program 1 times [2022-01-31 23:13:00,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:13:00,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393611546] [2022-01-31 23:13:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:13:00,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:13:00,551 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:13:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:13:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:13:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 23:13:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 23:13:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 23:13:00,777 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:13:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393611546] [2022-01-31 23:13:00,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [393611546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:13:00,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:13:00,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:13:00,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727548479] [2022-01-31 23:13:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:13:00,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:13:00,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:13:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:13:00,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:13:00,780 INFO L87 Difference]: Start difference. First operand 27 states and 31 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, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:13:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:13:00,885 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-01-31 23:13:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:13:00,886 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, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 23:13:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:13:00,888 INFO L225 Difference]: With dead ends: 33 [2022-01-31 23:13:00,888 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 23:13:00,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 23:13:00,894 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:13:00,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:13:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 23:13:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-31 23:13:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:13:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 23:13:00,910 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2022-01-31 23:13:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:13:00,913 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 23:13:00,913 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, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:13:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 23:13:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 23:13:00,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:13:00,914 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] [2022-01-31 23:13:00,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:13:00,915 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:13:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:13:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1911564209, now seen corresponding path program 1 times [2022-01-31 23:13:00,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:13:00,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940653956] [2022-01-31 23:13:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:13:00,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:13:00,918 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:13:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:01,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:13:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:13:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 23:13:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 23:13:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 23:13:01,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:13:01,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940653956] [2022-01-31 23:13:01,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1940653956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:13:01,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:13:01,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:13:01,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045914403] [2022-01-31 23:13:01,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:13:01,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:13:01,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:13:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:13:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:13:01,034 INFO L87 Difference]: Start difference. First operand 28 states and 32 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, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:13:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:13:01,137 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-01-31 23:13:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:13:01,138 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, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-01-31 23:13:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:13:01,139 INFO L225 Difference]: With dead ends: 49 [2022-01-31 23:13:01,139 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 23:13:01,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 23:13:01,146 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:13:01,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 61 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:13:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 23:13:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-01-31 23:13:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:13:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 23:13:01,162 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2022-01-31 23:13:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:13:01,162 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 23:13:01,162 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, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:13:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 23:13:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 23:13:01,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:13:01,164 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] [2022-01-31 23:13:01,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:13:01,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:13:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:13:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1017660211, now seen corresponding path program 1 times [2022-01-31 23:13:01,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:13:01,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237482723] [2022-01-31 23:13:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:13:01,215 ERROR L252 FreeRefinementEngine]: Caught unknown exception: Undeclared function symbol (select Real Int) [2022-01-31 23:13:01,216 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-31 23:13:01,216 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (select Real Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:505) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:426) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.select(SmtUtils.java:1520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1465) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1374) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.convertApplicationTerm(SmtUtils.java:1363) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.convertApplicationTerm(Substitution.java:53) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.getUpdates(QvasrAbstractor.java:1229) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.computeAbstraction(QvasrAbstractor.java:106) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:133) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:79) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.accelerateNestedLoops(AcceleratedInterpolationCore.java:453) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:194) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 23:13:01,219 INFO L158 Benchmark]: Toolchain (without parser) took 1677.87ms. Allocated memory is still 190.8MB. Free memory was 135.6MB in the beginning and 87.9MB in the end (delta: 47.7MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. [2022-01-31 23:13:01,219 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:13:01,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.10ms. Allocated memory is still 190.8MB. Free memory was 135.3MB in the beginning and 161.8MB in the end (delta: -26.4MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2022-01-31 23:13:01,220 INFO L158 Benchmark]: Boogie Preprocessor took 25.62ms. Allocated memory is still 190.8MB. Free memory was 161.8MB in the beginning and 160.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:13:01,220 INFO L158 Benchmark]: RCFGBuilder took 289.34ms. Allocated memory is still 190.8MB. Free memory was 160.2MB in the beginning and 148.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:13:01,221 INFO L158 Benchmark]: TraceAbstraction took 1155.61ms. Allocated memory is still 190.8MB. Free memory was 147.7MB in the beginning and 87.9MB in the end (delta: 59.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2022-01-31 23:13:01,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 202.10ms. Allocated memory is still 190.8MB. Free memory was 135.3MB in the beginning and 161.8MB in the end (delta: -26.4MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.62ms. Allocated memory is still 190.8MB. Free memory was 161.8MB in the beginning and 160.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 289.34ms. Allocated memory is still 190.8MB. Free memory was 160.2MB in the beginning and 148.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1155.61ms. Allocated memory is still 190.8MB. Free memory was 147.7MB in the beginning and 87.9MB in the end (delta: 59.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (select Real Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (select Real Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:505) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 23:13:01,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...