/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/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:24:18,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:24:18,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:24:18,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:24:18,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:24:18,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:24:18,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:24:18,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:24:18,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:24:18,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:24:18,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:24:18,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:24:18,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:24:18,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:24:18,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:24:18,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:24:18,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:24:18,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:24:18,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:24:18,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:24:18,184 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 23:24:18,195 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:24:18,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:24:18,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:24:18,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:24:18,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:24:18,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:24:18,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:24:18,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:24:18,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:24:18,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:24:18,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:24:18,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:24:18,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:24:18,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:24:18,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:24:18,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:24:18,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:24:18,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:24:18,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:24:18,198 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:24:18,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:24:18,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:24:18,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:24:18,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:24:18,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:24:18,403 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:24:18,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2022-01-31 23:24:18,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eb515b3/5bed734ab14245c6a4a8aa9e57b0144b/FLAG1c5b79d32 [2022-01-31 23:24:18,779 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:24:18,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2022-01-31 23:24:18,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eb515b3/5bed734ab14245c6a4a8aa9e57b0144b/FLAG1c5b79d32 [2022-01-31 23:24:19,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eb515b3/5bed734ab14245c6a4a8aa9e57b0144b [2022-01-31 23:24:19,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:24:19,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:24:19,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:24:19,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:24:19,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:24:19,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7ca12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19, skipping insertion in model container [2022-01-31 23:24:19,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:24:19,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:24:19,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2022-01-31 23:24:19,378 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2022-01-31 23:24:19,384 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2022-01-31 23:24:19,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:24:19,434 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:24:19,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2022-01-31 23:24:19,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2022-01-31 23:24:19,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2022-01-31 23:24:19,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:24:19,456 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:24:19,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19 WrapperNode [2022-01-31 23:24:19,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:24:19,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:24:19,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:24:19,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:24:19,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:24:19,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:24:19,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:24:19,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:24:19,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (1/1) ... [2022-01-31 23:24:19,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:24:19,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:24:19,504 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 23:24:19,506 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 23:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:24:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:24:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:24:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:24:19,576 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:24:19,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:24:19,674 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:24:19,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:24:19,678 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 23:24:19,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:24:19 BoogieIcfgContainer [2022-01-31 23:24:19,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:24:19,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:24:19,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:24:19,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:24:19,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:24:19" (1/3) ... [2022-01-31 23:24:19,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d28064e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:24:19, skipping insertion in model container [2022-01-31 23:24:19,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:24:19" (2/3) ... [2022-01-31 23:24:19,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d28064e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:24:19, skipping insertion in model container [2022-01-31 23:24:19,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:24:19" (3/3) ... [2022-01-31 23:24:19,685 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2022-01-31 23:24:19,689 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:24:19,689 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-31 23:24:19,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:24:19,722 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 23:24:19,723 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-31 23:24:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 23:24:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-31 23:24:19,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:24:19,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:24:19,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:24:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:24:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash 557366739, now seen corresponding path program 1 times [2022-01-31 23:24:19,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:24:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748981038] [2022-01-31 23:24:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:24:19,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:24:19,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:24:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:24:19,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:24:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:24:19,897 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 23:24:19,898 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:24:19,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748981038] [2022-01-31 23:24:19,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1748981038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:24:19,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:24:19,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 23:24:19,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403356791] [2022-01-31 23:24:19,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:24:19,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 23:24:19,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:24:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 23:24:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:24:19,925 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:24:20,000 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-01-31 23:24:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:24:20,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-01-31 23:24:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:24:20,007 INFO L225 Difference]: With dead ends: 30 [2022-01-31 23:24:20,007 INFO L226 Difference]: Without dead ends: 18 [2022-01-31 23:24:20,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:24:20,012 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:24:20,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 39 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 23:24:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-31 23:24:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-31 23:24:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-01-31 23:24:20,037 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2022-01-31 23:24:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:24:20,037 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-01-31 23:24:20,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-01-31 23:24:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 23:24:20,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:24:20,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:24:20,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:24:20,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:24:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:24:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1241381707, now seen corresponding path program 1 times [2022-01-31 23:24:20,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:24:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599091649] [2022-01-31 23:24:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:24:20,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:24:20,042 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:24:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:24:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:24:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:24:20,146 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 23:24:20,147 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:24:20,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599091649] [2022-01-31 23:24:20,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1599091649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:24:20,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:24:20,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 23:24:20,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255480179] [2022-01-31 23:24:20,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:24:20,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 23:24:20,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:24:20,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 23:24:20,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:24:20,149 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:24:20,208 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-01-31 23:24:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:24:20,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-31 23:24:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:24:20,210 INFO L225 Difference]: With dead ends: 19 [2022-01-31 23:24:20,210 INFO L226 Difference]: Without dead ends: 17 [2022-01-31 23:24:20,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 23:24:20,211 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:24:20,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 23:24:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-31 23:24:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-01-31 23:24:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-31 23:24:20,221 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2022-01-31 23:24:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:24:20,221 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-31 23:24:20,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-31 23:24:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 23:24:20,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:24:20,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:24:20,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:24:20,222 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:24:20,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:24:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1033184217, now seen corresponding path program 1 times [2022-01-31 23:24:20,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:24:20,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153139835] [2022-01-31 23:24:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:24:20,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:24:20,231 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:24:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:24:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:24:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:24:20,329 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 23:24:20,330 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:24:20,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153139835] [2022-01-31 23:24:20,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153139835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:24:20,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:24:20,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:24:20,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537873668] [2022-01-31 23:24:20,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:24:20,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:24:20,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:24:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:24:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:24:20,334 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:24:20,474 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-01-31 23:24:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 23:24:20,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 23:24:20,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:24:20,475 INFO L225 Difference]: With dead ends: 25 [2022-01-31 23:24:20,475 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 23:24:20,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:24:20,482 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:24:20,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 23:24:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 23:24:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 23:24:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-31 23:24:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 23:24:20,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-01-31 23:24:20,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:24:20,485 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 23:24:20,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 23:24:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 23:24:20,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 23:24:20,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-31 23:24:20,495 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-31 23:24:20,495 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-31 23:24:20,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:24:20,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-31 23:24:20,698 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-01-31 23:24:20,698 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-01-31 23:24:20,698 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-01-31 23:24:20,698 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-01-31 23:24:20,698 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-01-31 23:24:20,698 INFO L858 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-01-31 23:24:20,698 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-01-31 23:24:20,699 INFO L854 garLoopResultBuilder]: At program point L33(lines 33 89) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (= main_~__VERIFIER_assert__cond~0 1))) [2022-01-31 23:24:20,699 INFO L854 garLoopResultBuilder]: At program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) the Hoare annotation is: false [2022-01-31 23:24:20,699 INFO L854 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: false [2022-01-31 23:24:20,699 INFO L854 garLoopResultBuilder]: At program point L95(lines 14 102) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2022-01-31 23:24:20,699 INFO L854 garLoopResultBuilder]: At program point L62(lines 62 70) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (not (= main_~__VERIFIER_assert__cond~1 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~2 0)))) [2022-01-31 23:24:20,699 INFO L854 garLoopResultBuilder]: At program point mainEXIT(lines 13 102) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (= |old(~__return_100~0)| ~__return_100~0)) [2022-01-31 23:24:20,699 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: false [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point L79(lines 52 87) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (not (= main_~__VERIFIER_assert__cond~1 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point L46(lines 46 87) the Hoare annotation is: (let ((.cse4 (+ main_~main__i~0 1))) (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~1 0))) (.cse1 (<= .cse4 main_~main__nlen~0)) (.cse2 (= |old(~__return_100~0)| ~__return_100~0)) (.cse3 (< 0 .cse4))) (or (and .cse0 (not (= main_~__VERIFIER_assert__cond~0 0)) .cse1 .cse2 .cse3 (not (= main_~__VERIFIER_assert__cond~2 0))) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1))))) [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point mainFINAL(lines 13 102) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (= |old(~__return_100~0)| ~__return_100~0)) [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse4 (+ main_~main__i~0 1))) (let ((.cse0 (not (= main_~__VERIFIER_assert__cond~0 0))) (.cse1 (<= .cse4 main_~main__nlen~0)) (.cse2 (= |old(~__return_100~0)| ~__return_100~0)) (.cse3 (< 0 .cse4))) (or (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1)) (and .cse0 .cse1 .cse2 .cse3 (not (= main_~__VERIFIER_assert__cond~2 0)))))) [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) the Hoare annotation is: false [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) the Hoare annotation is: false [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2022-01-31 23:24:20,700 INFO L854 garLoopResultBuilder]: At program point L26(lines 26 96) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2022-01-31 23:24:20,701 INFO L854 garLoopResultBuilder]: At program point L76(lines 76 85) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~1 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2022-01-31 23:24:20,701 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: false [2022-01-31 23:24:20,701 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-01-31 23:24:20,701 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_100~0)| ~__return_100~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-01-31 23:24:20,701 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-01-31 23:24:20,701 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-01-31 23:24:20,701 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-01-31 23:24:20,701 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-01-31 23:24:20,701 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-01-31 23:24:20,704 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 23:24:20,705 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:24:20,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:24:20 BoogieIcfgContainer [2022-01-31 23:24:20,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:24:20,716 INFO L158 Benchmark]: Toolchain (without parser) took 1482.76ms. Allocated memory was 169.9MB in the beginning and 313.5MB in the end (delta: 143.7MB). Free memory was 114.6MB in the beginning and 203.6MB in the end (delta: -89.0MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. [2022-01-31 23:24:20,716 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:24:20,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.01ms. Allocated memory was 169.9MB in the beginning and 313.5MB in the end (delta: 143.7MB). Free memory was 114.3MB in the beginning and 287.0MB in the end (delta: -172.7MB). Peak memory consumption was 10.3MB. Max. memory is 8.0GB. [2022-01-31 23:24:20,717 INFO L158 Benchmark]: Boogie Preprocessor took 18.07ms. Allocated memory is still 313.5MB. Free memory was 287.0MB in the beginning and 285.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:24:20,717 INFO L158 Benchmark]: RCFGBuilder took 204.06ms. Allocated memory is still 313.5MB. Free memory was 285.4MB in the beginning and 273.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 23:24:20,717 INFO L158 Benchmark]: TraceAbstraction took 1034.79ms. Allocated memory is still 313.5MB. Free memory was 273.4MB in the beginning and 203.6MB in the end (delta: 69.7MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. [2022-01-31 23:24:20,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.01ms. Allocated memory was 169.9MB in the beginning and 313.5MB in the end (delta: 143.7MB). Free memory was 114.3MB in the beginning and 287.0MB in the end (delta: -172.7MB). Peak memory consumption was 10.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.07ms. Allocated memory is still 313.5MB. Free memory was 287.0MB in the beginning and 285.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 204.06ms. Allocated memory is still 313.5MB. Free memory was 285.4MB in the beginning and 273.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1034.79ms. Allocated memory is still 313.5MB. Free memory was 273.4MB in the beginning and 203.6MB in the end (delta: 69.7MB). Peak memory consumption was 70.3MB. 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 - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 41 mSDtfsCounter, 75 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 39 NumberOfFragments, 241 HoareAnnotationTreeSize, 24 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 255 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && main__i + 1 <= main__nlen) && \old(__return_100) == __return_100) && 0 < main__i + 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((!(__VERIFIER_assert__cond == 0) && main__i + 1 <= main__nlen) && \old(__return_100) == __return_100) && 0 < main__i + 1) && __VERIFIER_assert__cond == 1) || ((((!(__VERIFIER_assert__cond == 0) && main__i + 1 <= main__nlen) && \old(__return_100) == __return_100) && 0 < main__i + 1) && !(__VERIFIER_assert__cond == 0)) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: !(__VERIFIER_assert__cond == 0) || \old(__return_100) == __return_100 RESULT: Ultimate proved your program to be correct! [2022-01-31 23:24:20,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...