/usr/bin/java -ea -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-acceleration/array_3-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 09:14:17,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 09:14:17,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 09:14:17,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-28 09:14:17,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-28 09:14:17,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-28 09:14:17,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-28 09:14:17,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-28 09:14:17,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-28 09:14:17,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-28 09:14:17,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-28 09:14:17,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-28 09:14:17,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 09:14:17,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 09:14:17,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 09:14:17,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 09:14:17,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 09:14:17,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 09:14:17,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 09:14:17,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 09:14:17,356 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 09:14:17,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 09:14:17,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 09:14:17,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 09:14:17,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 09:14:17,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-28 09:14:17,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-28 09:14:17,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-28 09:14:17,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-28 09:14:17,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-28 09:14:17,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-28 09:14:17,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-28 09:14:17,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-28 09:14:17,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-28 09:14:17,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-28 09:14:17,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-28 09:14:17,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-28 09:14:17,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-28 09:14:17,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-28 09:14:17,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 09:14:17,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 09:14:17,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 09:14:17,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 09:14:17,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 09:14:17,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 09:14:17,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 09:14:17,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 09:14:17,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 09:14:17,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 09:14:17,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 09:14:17,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 09:14:17,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 09:14:17,380 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 09:14:17,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 09:14:17,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 09:14:17,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 09:14:17,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 09:14:17,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 09:14:17,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:14:17,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 09:14:17,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 09:14:17,381 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 09:14:17,381 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 09:14:17,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 09:14:17,382 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 09:14:17,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 09:14:17,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 09:14:17,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 09:14:17,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 09:14:17,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 09:14:17,615 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 09:14:17,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-1.i [2022-04-28 09:14:17,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93df3b62a/1b3062cebf96492199c8bcc4b56f6227/FLAG884b9c671 [2022-04-28 09:14:18,050 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 09:14:18,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-1.i [2022-04-28 09:14:18,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93df3b62a/1b3062cebf96492199c8bcc4b56f6227/FLAG884b9c671 [2022-04-28 09:14:18,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93df3b62a/1b3062cebf96492199c8bcc4b56f6227 [2022-04-28 09:14:18,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 09:14:18,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 09:14:18,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 09:14:18,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 09:14:18,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 09:14:18,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ea78f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18, skipping insertion in model container [2022-04-28 09:14:18,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 09:14:18,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 09:14:18,221 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-acceleration/array_3-1.i[849,862] [2022-04-28 09:14:18,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:14:18,239 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 09:14:18,250 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-acceleration/array_3-1.i[849,862] [2022-04-28 09:14:18,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:14:18,266 INFO L208 MainTranslator]: Completed translation [2022-04-28 09:14:18,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18 WrapperNode [2022-04-28 09:14:18,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 09:14:18,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 09:14:18,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 09:14:18,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 09:14:18,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 09:14:18,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 09:14:18,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 09:14:18,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 09:14:18,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (1/1) ... [2022-04-28 09:14:18,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:14:18,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:14:18,318 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) [2022-04-28 09:14:18,320 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 [2022-04-28 09:14:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 09:14:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 09:14:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 09:14:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 09:14:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 09:14:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 09:14:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-28 09:14:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 09:14:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 09:14:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 09:14:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 09:14:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 09:14:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 09:14:18,396 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 09:14:18,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 09:14:18,487 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 09:14:18,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 09:14:18,493 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-28 09:14:18,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:14:18 BoogieIcfgContainer [2022-04-28 09:14:18,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 09:14:18,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 09:14:18,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 09:14:18,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 09:14:18,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 09:14:18" (1/3) ... [2022-04-28 09:14:18,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6466bd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:14:18, skipping insertion in model container [2022-04-28 09:14:18,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:14:18" (2/3) ... [2022-04-28 09:14:18,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6466bd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:14:18, skipping insertion in model container [2022-04-28 09:14:18,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:14:18" (3/3) ... [2022-04-28 09:14:18,516 INFO L111 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2022-04-28 09:14:18,528 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 09:14:18,528 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 09:14:18,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 09:14:18,606 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6149ddab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@409d22cd [2022-04-28 09:14:18,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 09:14:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 09:14:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-28 09:14:18,619 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:14:18,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:14:18,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:14:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:14:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1037683284, now seen corresponding path program 1 times [2022-04-28 09:14:18,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:18,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [438647103] [2022-04-28 09:14:18,660 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 09:14:18,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1037683284, now seen corresponding path program 2 times [2022-04-28 09:14:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:14:18,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437366705] [2022-04-28 09:14:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:14:18,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:14:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:14:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:18,817 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {28#true} is VALID [2022-04-28 09:14:18,817 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-28 09:14:18,817 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #63#return; {28#true} is VALID [2022-04-28 09:14:18,819 INFO L272 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:14:18,819 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {28#true} is VALID [2022-04-28 09:14:18,819 INFO L290 TraceCheckUtils]: 2: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-28 09:14:18,819 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} #63#return; {28#true} is VALID [2022-04-28 09:14:18,820 INFO L272 TraceCheckUtils]: 4: Hoare triple {28#true} call #t~ret5 := main(); {28#true} is VALID [2022-04-28 09:14:18,820 INFO L290 TraceCheckUtils]: 5: Hoare triple {28#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {28#true} is VALID [2022-04-28 09:14:18,820 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#true} assume !true; {29#false} is VALID [2022-04-28 09:14:18,821 INFO L290 TraceCheckUtils]: 7: Hoare triple {29#false} ~i~0 := 0; {29#false} is VALID [2022-04-28 09:14:18,821 INFO L290 TraceCheckUtils]: 8: Hoare triple {29#false} assume !true; {29#false} is VALID [2022-04-28 09:14:18,821 INFO L272 TraceCheckUtils]: 9: Hoare triple {29#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {29#false} is VALID [2022-04-28 09:14:18,821 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2022-04-28 09:14:18,822 INFO L290 TraceCheckUtils]: 11: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2022-04-28 09:14:18,822 INFO L290 TraceCheckUtils]: 12: Hoare triple {29#false} assume !false; {29#false} is VALID [2022-04-28 09:14:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 09:14:18,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:14:18,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437366705] [2022-04-28 09:14:18,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437366705] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:18,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:18,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 09:14:18,826 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:14:18,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [438647103] [2022-04-28 09:14:18,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [438647103] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:18,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:18,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 09:14:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868356157] [2022-04-28 09:14:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:14:18,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 09:14:18,833 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:14:18,835 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:18,854 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 09:14:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 09:14:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 09:14:18,873 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:18,943 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-04-28 09:14:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 09:14:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 09:14:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:14:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-04-28 09:14:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-04-28 09:14:18,957 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 51 transitions. [2022-04-28 09:14:19,023 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:19,030 INFO L225 Difference]: With dead ends: 42 [2022-04-28 09:14:19,030 INFO L226 Difference]: Without dead ends: 18 [2022-04-28 09:14:19,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 09:14:19,039 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 09:14:19,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 09:14:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-28 09:14:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-28 09:14:19,063 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:14:19,064 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,064 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,065 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:19,068 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-28 09:14:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-28 09:14:19,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:19,068 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:19,069 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-28 09:14:19,069 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-28 09:14:19,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:19,071 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-28 09:14:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-28 09:14:19,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:19,072 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:19,072 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:14:19,072 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:14:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-04-28 09:14:19,079 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2022-04-28 09:14:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:14:19,080 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-04-28 09:14:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,080 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 18 states and 20 transitions. [2022-04-28 09:14:19,115 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-28 09:14:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-28 09:14:19,122 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:14:19,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:14:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 09:14:19,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:14:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:14:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash -193552662, now seen corresponding path program 1 times [2022-04-28 09:14:19,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:19,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [340074080] [2022-04-28 09:14:19,127 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 09:14:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -193552662, now seen corresponding path program 2 times [2022-04-28 09:14:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:14:19,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562565595] [2022-04-28 09:14:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:14:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:14:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:14:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:19,246 INFO L290 TraceCheckUtils]: 0: Hoare triple {198#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {192#true} is VALID [2022-04-28 09:14:19,246 INFO L290 TraceCheckUtils]: 1: Hoare triple {192#true} assume true; {192#true} is VALID [2022-04-28 09:14:19,247 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {192#true} {192#true} #63#return; {192#true} is VALID [2022-04-28 09:14:19,247 INFO L272 TraceCheckUtils]: 0: Hoare triple {192#true} call ULTIMATE.init(); {198#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:14:19,247 INFO L290 TraceCheckUtils]: 1: Hoare triple {198#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {192#true} is VALID [2022-04-28 09:14:19,248 INFO L290 TraceCheckUtils]: 2: Hoare triple {192#true} assume true; {192#true} is VALID [2022-04-28 09:14:19,248 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {192#true} {192#true} #63#return; {192#true} is VALID [2022-04-28 09:14:19,248 INFO L272 TraceCheckUtils]: 4: Hoare triple {192#true} call #t~ret5 := main(); {192#true} is VALID [2022-04-28 09:14:19,248 INFO L290 TraceCheckUtils]: 5: Hoare triple {192#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {197#(= main_~i~0 0)} is VALID [2022-04-28 09:14:19,249 INFO L290 TraceCheckUtils]: 6: Hoare triple {197#(= main_~i~0 0)} assume !(~i~0 < 1024); {193#false} is VALID [2022-04-28 09:14:19,249 INFO L290 TraceCheckUtils]: 7: Hoare triple {193#false} ~i~0 := 0; {193#false} is VALID [2022-04-28 09:14:19,249 INFO L290 TraceCheckUtils]: 8: Hoare triple {193#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {193#false} is VALID [2022-04-28 09:14:19,250 INFO L290 TraceCheckUtils]: 9: Hoare triple {193#false} assume !(0 != #t~mem4);havoc #t~mem4; {193#false} is VALID [2022-04-28 09:14:19,250 INFO L272 TraceCheckUtils]: 10: Hoare triple {193#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {193#false} is VALID [2022-04-28 09:14:19,250 INFO L290 TraceCheckUtils]: 11: Hoare triple {193#false} ~cond := #in~cond; {193#false} is VALID [2022-04-28 09:14:19,250 INFO L290 TraceCheckUtils]: 12: Hoare triple {193#false} assume 0 == ~cond; {193#false} is VALID [2022-04-28 09:14:19,250 INFO L290 TraceCheckUtils]: 13: Hoare triple {193#false} assume !false; {193#false} is VALID [2022-04-28 09:14:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 09:14:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:14:19,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562565595] [2022-04-28 09:14:19,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562565595] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:19,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:19,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 09:14:19,252 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:14:19,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [340074080] [2022-04-28 09:14:19,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [340074080] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:19,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:19,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 09:14:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885261242] [2022-04-28 09:14:19,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:14:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-28 09:14:19,253 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:14:19,254 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,266 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 09:14:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 09:14:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 09:14:19,267 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:19,348 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-28 09:14:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 09:14:19,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-28 09:14:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:14:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2022-04-28 09:14:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2022-04-28 09:14:19,353 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 41 transitions. [2022-04-28 09:14:19,401 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:19,406 INFO L225 Difference]: With dead ends: 35 [2022-04-28 09:14:19,406 INFO L226 Difference]: Without dead ends: 25 [2022-04-28 09:14:19,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 09:14:19,409 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 09:14:19,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 09:14:19,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-28 09:14:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-04-28 09:14:19,424 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:14:19,425 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,426 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,426 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:19,429 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-28 09:14:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-28 09:14:19,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:19,430 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:19,430 INFO L74 IsIncluded]: Start isIncluded. First operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 25 states. [2022-04-28 09:14:19,431 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 25 states. [2022-04-28 09:14:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:19,441 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-28 09:14:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-28 09:14:19,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:19,441 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:19,441 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:14:19,441 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:14:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-04-28 09:14:19,443 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2022-04-28 09:14:19,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:14:19,443 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-04-28 09:14:19,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,444 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 22 states and 25 transitions. [2022-04-28 09:14:19,468 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-04-28 09:14:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-28 09:14:19,469 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:14:19,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:14:19,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 09:14:19,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:14:19,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:14:19,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1156315956, now seen corresponding path program 1 times [2022-04-28 09:14:19,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:19,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [464335502] [2022-04-28 09:14:19,494 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-28 09:14:19,494 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 09:14:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1156315956, now seen corresponding path program 2 times [2022-04-28 09:14:19,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:14:19,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753096560] [2022-04-28 09:14:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:14:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:14:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:14:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:19,597 INFO L290 TraceCheckUtils]: 0: Hoare triple {374#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {367#true} is VALID [2022-04-28 09:14:19,597 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} assume true; {367#true} is VALID [2022-04-28 09:14:19,597 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {367#true} {367#true} #63#return; {367#true} is VALID [2022-04-28 09:14:19,599 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} call ULTIMATE.init(); {374#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:14:19,599 INFO L290 TraceCheckUtils]: 1: Hoare triple {374#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {367#true} is VALID [2022-04-28 09:14:19,599 INFO L290 TraceCheckUtils]: 2: Hoare triple {367#true} assume true; {367#true} is VALID [2022-04-28 09:14:19,599 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} #63#return; {367#true} is VALID [2022-04-28 09:14:19,599 INFO L272 TraceCheckUtils]: 4: Hoare triple {367#true} call #t~ret5 := main(); {367#true} is VALID [2022-04-28 09:14:19,601 INFO L290 TraceCheckUtils]: 5: Hoare triple {367#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {372#(= main_~i~0 0)} is VALID [2022-04-28 09:14:19,602 INFO L290 TraceCheckUtils]: 6: Hoare triple {372#(= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {372#(= main_~i~0 0)} is VALID [2022-04-28 09:14:19,603 INFO L290 TraceCheckUtils]: 7: Hoare triple {372#(= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {373#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:19,604 INFO L290 TraceCheckUtils]: 8: Hoare triple {373#(<= main_~i~0 1)} assume !(~i~0 < 1024); {368#false} is VALID [2022-04-28 09:14:19,604 INFO L290 TraceCheckUtils]: 9: Hoare triple {368#false} ~i~0 := 0; {368#false} is VALID [2022-04-28 09:14:19,604 INFO L290 TraceCheckUtils]: 10: Hoare triple {368#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {368#false} is VALID [2022-04-28 09:14:19,604 INFO L290 TraceCheckUtils]: 11: Hoare triple {368#false} assume !(0 != #t~mem4);havoc #t~mem4; {368#false} is VALID [2022-04-28 09:14:19,604 INFO L272 TraceCheckUtils]: 12: Hoare triple {368#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {368#false} is VALID [2022-04-28 09:14:19,604 INFO L290 TraceCheckUtils]: 13: Hoare triple {368#false} ~cond := #in~cond; {368#false} is VALID [2022-04-28 09:14:19,605 INFO L290 TraceCheckUtils]: 14: Hoare triple {368#false} assume 0 == ~cond; {368#false} is VALID [2022-04-28 09:14:19,605 INFO L290 TraceCheckUtils]: 15: Hoare triple {368#false} assume !false; {368#false} is VALID [2022-04-28 09:14:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 09:14:19,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:14:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753096560] [2022-04-28 09:14:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753096560] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 09:14:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823978665] [2022-04-28 09:14:19,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 09:14:19,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 09:14:19,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:14:19,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 09:14:19,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 09:14:19,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 09:14:19,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 09:14:19,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-28 09:14:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:19,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 09:14:19,835 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} call ULTIMATE.init(); {367#true} is VALID [2022-04-28 09:14:19,835 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {367#true} is VALID [2022-04-28 09:14:19,835 INFO L290 TraceCheckUtils]: 2: Hoare triple {367#true} assume true; {367#true} is VALID [2022-04-28 09:14:19,835 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} #63#return; {367#true} is VALID [2022-04-28 09:14:19,836 INFO L272 TraceCheckUtils]: 4: Hoare triple {367#true} call #t~ret5 := main(); {367#true} is VALID [2022-04-28 09:14:19,836 INFO L290 TraceCheckUtils]: 5: Hoare triple {367#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {367#true} is VALID [2022-04-28 09:14:19,836 INFO L290 TraceCheckUtils]: 6: Hoare triple {367#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {367#true} is VALID [2022-04-28 09:14:19,836 INFO L290 TraceCheckUtils]: 7: Hoare triple {367#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {367#true} is VALID [2022-04-28 09:14:19,836 INFO L290 TraceCheckUtils]: 8: Hoare triple {367#true} assume !(~i~0 < 1024); {367#true} is VALID [2022-04-28 09:14:19,837 INFO L290 TraceCheckUtils]: 9: Hoare triple {367#true} ~i~0 := 0; {405#(<= main_~i~0 0)} is VALID [2022-04-28 09:14:19,837 INFO L290 TraceCheckUtils]: 10: Hoare triple {405#(<= main_~i~0 0)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {405#(<= main_~i~0 0)} is VALID [2022-04-28 09:14:19,837 INFO L290 TraceCheckUtils]: 11: Hoare triple {405#(<= main_~i~0 0)} assume !(0 != #t~mem4);havoc #t~mem4; {405#(<= main_~i~0 0)} is VALID [2022-04-28 09:14:19,838 INFO L272 TraceCheckUtils]: 12: Hoare triple {405#(<= main_~i~0 0)} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {415#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 09:14:19,839 INFO L290 TraceCheckUtils]: 13: Hoare triple {415#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {419#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 09:14:19,840 INFO L290 TraceCheckUtils]: 14: Hoare triple {419#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {368#false} is VALID [2022-04-28 09:14:19,840 INFO L290 TraceCheckUtils]: 15: Hoare triple {368#false} assume !false; {368#false} is VALID [2022-04-28 09:14:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-28 09:14:19,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 09:14:19,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823978665] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:19,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-28 09:14:19,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-04-28 09:14:19,842 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:14:19,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [464335502] [2022-04-28 09:14:19,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [464335502] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:19,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:19,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 09:14:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086876959] [2022-04-28 09:14:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:14:19,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 09:14:19,844 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:14:19,845 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,863 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:19,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 09:14:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 09:14:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-28 09:14:19,864 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:19,963 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-04-28 09:14:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 09:14:19,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 09:14:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:14:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-28 09:14:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-28 09:14:19,972 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 31 transitions. [2022-04-28 09:14:20,006 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:20,008 INFO L225 Difference]: With dead ends: 29 [2022-04-28 09:14:20,008 INFO L226 Difference]: Without dead ends: 24 [2022-04-28 09:14:20,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-28 09:14:20,014 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 09:14:20,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 48 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 09:14:20,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-28 09:14:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-04-28 09:14:20,026 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:14:20,026 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,026 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,027 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:20,028 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-28 09:14:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-28 09:14:20,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:20,029 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:20,030 INFO L74 IsIncluded]: Start isIncluded. First operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 24 states. [2022-04-28 09:14:20,030 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 24 states. [2022-04-28 09:14:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:20,032 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-28 09:14:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-28 09:14:20,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:20,033 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:20,033 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:14:20,033 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:14:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-04-28 09:14:20,036 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2022-04-28 09:14:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:14:20,036 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-04-28 09:14:20,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,036 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 22 states and 24 transitions. [2022-04-28 09:14:20,059 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-04-28 09:14:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-28 09:14:20,060 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:14:20,060 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:14:20,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 09:14:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 09:14:20,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:14:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:14:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1375191853, now seen corresponding path program 1 times [2022-04-28 09:14:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:20,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [254392670] [2022-04-28 09:14:20,286 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-28 09:14:20,286 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 09:14:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1375191853, now seen corresponding path program 2 times [2022-04-28 09:14:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:14:20,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908542669] [2022-04-28 09:14:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:14:20,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:14:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:14:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:20,370 INFO L290 TraceCheckUtils]: 0: Hoare triple {584#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-28 09:14:20,370 INFO L290 TraceCheckUtils]: 1: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-28 09:14:20,370 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-28 09:14:20,371 INFO L272 TraceCheckUtils]: 0: Hoare triple {577#true} call ULTIMATE.init(); {584#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:14:20,371 INFO L290 TraceCheckUtils]: 1: Hoare triple {584#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-28 09:14:20,374 INFO L290 TraceCheckUtils]: 2: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-28 09:14:20,375 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-28 09:14:20,375 INFO L272 TraceCheckUtils]: 4: Hoare triple {577#true} call #t~ret5 := main(); {577#true} is VALID [2022-04-28 09:14:20,375 INFO L290 TraceCheckUtils]: 5: Hoare triple {577#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {582#(= main_~i~0 0)} is VALID [2022-04-28 09:14:20,376 INFO L290 TraceCheckUtils]: 6: Hoare triple {582#(= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {582#(= main_~i~0 0)} is VALID [2022-04-28 09:14:20,376 INFO L290 TraceCheckUtils]: 7: Hoare triple {582#(= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {583#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:20,377 INFO L290 TraceCheckUtils]: 8: Hoare triple {583#(<= main_~i~0 1)} assume !(~i~0 < 1024); {578#false} is VALID [2022-04-28 09:14:20,377 INFO L290 TraceCheckUtils]: 9: Hoare triple {578#false} ~i~0 := 0; {578#false} is VALID [2022-04-28 09:14:20,377 INFO L290 TraceCheckUtils]: 10: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-28 09:14:20,377 INFO L290 TraceCheckUtils]: 11: Hoare triple {578#false} assume !!(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-28 09:14:20,378 INFO L290 TraceCheckUtils]: 12: Hoare triple {578#false} assume !(~i~0 >= 1023); {578#false} is VALID [2022-04-28 09:14:20,378 INFO L290 TraceCheckUtils]: 13: Hoare triple {578#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {578#false} is VALID [2022-04-28 09:14:20,378 INFO L290 TraceCheckUtils]: 14: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-28 09:14:20,378 INFO L290 TraceCheckUtils]: 15: Hoare triple {578#false} assume !(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-28 09:14:20,378 INFO L272 TraceCheckUtils]: 16: Hoare triple {578#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {578#false} is VALID [2022-04-28 09:14:20,379 INFO L290 TraceCheckUtils]: 17: Hoare triple {578#false} ~cond := #in~cond; {578#false} is VALID [2022-04-28 09:14:20,379 INFO L290 TraceCheckUtils]: 18: Hoare triple {578#false} assume 0 == ~cond; {578#false} is VALID [2022-04-28 09:14:20,379 INFO L290 TraceCheckUtils]: 19: Hoare triple {578#false} assume !false; {578#false} is VALID [2022-04-28 09:14:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 09:14:20,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:14:20,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908542669] [2022-04-28 09:14:20,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908542669] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 09:14:20,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240028586] [2022-04-28 09:14:20,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 09:14:20,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 09:14:20,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:14:20,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 09:14:20,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 09:14:20,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 09:14:20,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 09:14:20,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-28 09:14:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:20,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 09:14:20,519 INFO L272 TraceCheckUtils]: 0: Hoare triple {577#true} call ULTIMATE.init(); {577#true} is VALID [2022-04-28 09:14:20,519 INFO L290 TraceCheckUtils]: 1: Hoare triple {577#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-28 09:14:20,519 INFO L290 TraceCheckUtils]: 2: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-28 09:14:20,519 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-28 09:14:20,519 INFO L272 TraceCheckUtils]: 4: Hoare triple {577#true} call #t~ret5 := main(); {577#true} is VALID [2022-04-28 09:14:20,520 INFO L290 TraceCheckUtils]: 5: Hoare triple {577#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {603#(<= main_~i~0 0)} is VALID [2022-04-28 09:14:20,520 INFO L290 TraceCheckUtils]: 6: Hoare triple {603#(<= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {603#(<= main_~i~0 0)} is VALID [2022-04-28 09:14:20,521 INFO L290 TraceCheckUtils]: 7: Hoare triple {603#(<= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {583#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:20,521 INFO L290 TraceCheckUtils]: 8: Hoare triple {583#(<= main_~i~0 1)} assume !(~i~0 < 1024); {578#false} is VALID [2022-04-28 09:14:20,522 INFO L290 TraceCheckUtils]: 9: Hoare triple {578#false} ~i~0 := 0; {578#false} is VALID [2022-04-28 09:14:20,522 INFO L290 TraceCheckUtils]: 10: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-28 09:14:20,524 INFO L290 TraceCheckUtils]: 11: Hoare triple {578#false} assume !!(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-28 09:14:20,524 INFO L290 TraceCheckUtils]: 12: Hoare triple {578#false} assume !(~i~0 >= 1023); {578#false} is VALID [2022-04-28 09:14:20,524 INFO L290 TraceCheckUtils]: 13: Hoare triple {578#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {578#false} is VALID [2022-04-28 09:14:20,524 INFO L290 TraceCheckUtils]: 14: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-28 09:14:20,524 INFO L290 TraceCheckUtils]: 15: Hoare triple {578#false} assume !(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-28 09:14:20,525 INFO L272 TraceCheckUtils]: 16: Hoare triple {578#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {578#false} is VALID [2022-04-28 09:14:20,525 INFO L290 TraceCheckUtils]: 17: Hoare triple {578#false} ~cond := #in~cond; {578#false} is VALID [2022-04-28 09:14:20,525 INFO L290 TraceCheckUtils]: 18: Hoare triple {578#false} assume 0 == ~cond; {578#false} is VALID [2022-04-28 09:14:20,525 INFO L290 TraceCheckUtils]: 19: Hoare triple {578#false} assume !false; {578#false} is VALID [2022-04-28 09:14:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 09:14:20,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 09:14:20,620 INFO L290 TraceCheckUtils]: 19: Hoare triple {578#false} assume !false; {578#false} is VALID [2022-04-28 09:14:20,620 INFO L290 TraceCheckUtils]: 18: Hoare triple {578#false} assume 0 == ~cond; {578#false} is VALID [2022-04-28 09:14:20,620 INFO L290 TraceCheckUtils]: 17: Hoare triple {578#false} ~cond := #in~cond; {578#false} is VALID [2022-04-28 09:14:20,620 INFO L272 TraceCheckUtils]: 16: Hoare triple {578#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {578#false} is VALID [2022-04-28 09:14:20,621 INFO L290 TraceCheckUtils]: 15: Hoare triple {578#false} assume !(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-28 09:14:20,621 INFO L290 TraceCheckUtils]: 14: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-28 09:14:20,621 INFO L290 TraceCheckUtils]: 13: Hoare triple {578#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {578#false} is VALID [2022-04-28 09:14:20,621 INFO L290 TraceCheckUtils]: 12: Hoare triple {578#false} assume !(~i~0 >= 1023); {578#false} is VALID [2022-04-28 09:14:20,621 INFO L290 TraceCheckUtils]: 11: Hoare triple {578#false} assume !!(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-28 09:14:20,621 INFO L290 TraceCheckUtils]: 10: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-28 09:14:20,621 INFO L290 TraceCheckUtils]: 9: Hoare triple {578#false} ~i~0 := 0; {578#false} is VALID [2022-04-28 09:14:20,635 INFO L290 TraceCheckUtils]: 8: Hoare triple {679#(< main_~i~0 1024)} assume !(~i~0 < 1024); {578#false} is VALID [2022-04-28 09:14:20,636 INFO L290 TraceCheckUtils]: 7: Hoare triple {683#(< main_~i~0 1023)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {679#(< main_~i~0 1024)} is VALID [2022-04-28 09:14:20,636 INFO L290 TraceCheckUtils]: 6: Hoare triple {683#(< main_~i~0 1023)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {683#(< main_~i~0 1023)} is VALID [2022-04-28 09:14:20,637 INFO L290 TraceCheckUtils]: 5: Hoare triple {577#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {683#(< main_~i~0 1023)} is VALID [2022-04-28 09:14:20,637 INFO L272 TraceCheckUtils]: 4: Hoare triple {577#true} call #t~ret5 := main(); {577#true} is VALID [2022-04-28 09:14:20,637 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-28 09:14:20,637 INFO L290 TraceCheckUtils]: 2: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-28 09:14:20,638 INFO L290 TraceCheckUtils]: 1: Hoare triple {577#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-28 09:14:20,638 INFO L272 TraceCheckUtils]: 0: Hoare triple {577#true} call ULTIMATE.init(); {577#true} is VALID [2022-04-28 09:14:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 09:14:20,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240028586] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 09:14:20,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-28 09:14:20,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-04-28 09:14:20,639 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:14:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [254392670] [2022-04-28 09:14:20,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [254392670] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:20,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:20,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 09:14:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353862586] [2022-04-28 09:14:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:14:20,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 09:14:20,640 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:14:20,640 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,658 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:20,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 09:14:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 09:14:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-28 09:14:20,659 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:20,787 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-04-28 09:14:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 09:14:20,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 09:14:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:14:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2022-04-28 09:14:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2022-04-28 09:14:20,791 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 47 transitions. [2022-04-28 09:14:20,838 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:20,840 INFO L225 Difference]: With dead ends: 44 [2022-04-28 09:14:20,840 INFO L226 Difference]: Without dead ends: 31 [2022-04-28 09:14:20,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-28 09:14:20,845 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 09:14:20,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 27 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 09:14:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-28 09:14:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-04-28 09:14:20,864 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:14:20,864 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,865 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,865 INFO L87 Difference]: Start difference. First operand 31 states. Second operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:20,866 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-04-28 09:14:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-28 09:14:20,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:20,867 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:20,867 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 31 states. [2022-04-28 09:14:20,867 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 31 states. [2022-04-28 09:14:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:20,868 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-04-28 09:14:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-28 09:14:20,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:20,869 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:20,869 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:14:20,869 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:14:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-04-28 09:14:20,870 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2022-04-28 09:14:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:14:20,870 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-04-28 09:14:20,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:20,871 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 31 transitions. [2022-04-28 09:14:20,900 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-04-28 09:14:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-28 09:14:20,901 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:14:20,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:14:20,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 09:14:21,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-28 09:14:21,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:14:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:14:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -746180299, now seen corresponding path program 3 times [2022-04-28 09:14:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:21,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1156959046] [2022-04-28 09:14:21,122 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-28 09:14:21,123 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 09:14:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash -746180299, now seen corresponding path program 4 times [2022-04-28 09:14:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:14:21,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186681623] [2022-04-28 09:14:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:14:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:14:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:14:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:21,220 INFO L290 TraceCheckUtils]: 0: Hoare triple {926#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-28 09:14:21,220 INFO L290 TraceCheckUtils]: 1: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-28 09:14:21,221 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-28 09:14:21,221 INFO L272 TraceCheckUtils]: 0: Hoare triple {917#true} call ULTIMATE.init(); {926#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:14:21,221 INFO L290 TraceCheckUtils]: 1: Hoare triple {926#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-28 09:14:21,222 INFO L290 TraceCheckUtils]: 2: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-28 09:14:21,222 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-28 09:14:21,222 INFO L272 TraceCheckUtils]: 4: Hoare triple {917#true} call #t~ret5 := main(); {917#true} is VALID [2022-04-28 09:14:21,222 INFO L290 TraceCheckUtils]: 5: Hoare triple {917#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {917#true} is VALID [2022-04-28 09:14:21,222 INFO L290 TraceCheckUtils]: 6: Hoare triple {917#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {917#true} is VALID [2022-04-28 09:14:21,222 INFO L290 TraceCheckUtils]: 7: Hoare triple {917#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {917#true} is VALID [2022-04-28 09:14:21,223 INFO L290 TraceCheckUtils]: 8: Hoare triple {917#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {917#true} is VALID [2022-04-28 09:14:21,223 INFO L290 TraceCheckUtils]: 9: Hoare triple {917#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {917#true} is VALID [2022-04-28 09:14:21,223 INFO L290 TraceCheckUtils]: 10: Hoare triple {917#true} assume !(~i~0 < 1024); {917#true} is VALID [2022-04-28 09:14:21,223 INFO L290 TraceCheckUtils]: 11: Hoare triple {917#true} ~i~0 := 0; {922#(= main_~i~0 0)} is VALID [2022-04-28 09:14:21,224 INFO L290 TraceCheckUtils]: 12: Hoare triple {922#(= main_~i~0 0)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {922#(= main_~i~0 0)} is VALID [2022-04-28 09:14:21,224 INFO L290 TraceCheckUtils]: 13: Hoare triple {922#(= main_~i~0 0)} assume !!(0 != #t~mem4);havoc #t~mem4; {922#(= main_~i~0 0)} is VALID [2022-04-28 09:14:21,225 INFO L290 TraceCheckUtils]: 14: Hoare triple {922#(= main_~i~0 0)} assume !(~i~0 >= 1023); {922#(= main_~i~0 0)} is VALID [2022-04-28 09:14:21,225 INFO L290 TraceCheckUtils]: 15: Hoare triple {922#(= main_~i~0 0)} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {923#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:21,225 INFO L290 TraceCheckUtils]: 16: Hoare triple {923#(<= main_~i~0 1)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {923#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:21,226 INFO L290 TraceCheckUtils]: 17: Hoare triple {923#(<= main_~i~0 1)} assume !(0 != #t~mem4);havoc #t~mem4; {923#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:21,226 INFO L272 TraceCheckUtils]: 18: Hoare triple {923#(<= main_~i~0 1)} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {924#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 09:14:21,227 INFO L290 TraceCheckUtils]: 19: Hoare triple {924#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {925#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 09:14:21,227 INFO L290 TraceCheckUtils]: 20: Hoare triple {925#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {918#false} is VALID [2022-04-28 09:14:21,227 INFO L290 TraceCheckUtils]: 21: Hoare triple {918#false} assume !false; {918#false} is VALID [2022-04-28 09:14:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 09:14:21,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:14:21,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186681623] [2022-04-28 09:14:21,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186681623] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 09:14:21,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674564732] [2022-04-28 09:14:21,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-28 09:14:21,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 09:14:21,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:14:21,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 09:14:21,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 09:14:21,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-28 09:14:21,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 09:14:21,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-28 09:14:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:21,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 09:14:21,382 INFO L272 TraceCheckUtils]: 0: Hoare triple {917#true} call ULTIMATE.init(); {917#true} is VALID [2022-04-28 09:14:21,382 INFO L290 TraceCheckUtils]: 1: Hoare triple {917#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-28 09:14:21,382 INFO L290 TraceCheckUtils]: 2: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-28 09:14:21,382 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-28 09:14:21,382 INFO L272 TraceCheckUtils]: 4: Hoare triple {917#true} call #t~ret5 := main(); {917#true} is VALID [2022-04-28 09:14:21,383 INFO L290 TraceCheckUtils]: 5: Hoare triple {917#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {945#(<= main_~i~0 0)} is VALID [2022-04-28 09:14:21,383 INFO L290 TraceCheckUtils]: 6: Hoare triple {945#(<= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {945#(<= main_~i~0 0)} is VALID [2022-04-28 09:14:21,384 INFO L290 TraceCheckUtils]: 7: Hoare triple {945#(<= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {923#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:21,384 INFO L290 TraceCheckUtils]: 8: Hoare triple {923#(<= main_~i~0 1)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {923#(<= main_~i~0 1)} is VALID [2022-04-28 09:14:21,384 INFO L290 TraceCheckUtils]: 9: Hoare triple {923#(<= main_~i~0 1)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {958#(<= main_~i~0 2)} is VALID [2022-04-28 09:14:21,385 INFO L290 TraceCheckUtils]: 10: Hoare triple {958#(<= main_~i~0 2)} assume !(~i~0 < 1024); {918#false} is VALID [2022-04-28 09:14:21,385 INFO L290 TraceCheckUtils]: 11: Hoare triple {918#false} ~i~0 := 0; {918#false} is VALID [2022-04-28 09:14:21,385 INFO L290 TraceCheckUtils]: 12: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-28 09:14:21,385 INFO L290 TraceCheckUtils]: 13: Hoare triple {918#false} assume !!(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-28 09:14:21,385 INFO L290 TraceCheckUtils]: 14: Hoare triple {918#false} assume !(~i~0 >= 1023); {918#false} is VALID [2022-04-28 09:14:21,386 INFO L290 TraceCheckUtils]: 15: Hoare triple {918#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {918#false} is VALID [2022-04-28 09:14:21,386 INFO L290 TraceCheckUtils]: 16: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-28 09:14:21,386 INFO L290 TraceCheckUtils]: 17: Hoare triple {918#false} assume !(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-28 09:14:21,386 INFO L272 TraceCheckUtils]: 18: Hoare triple {918#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {918#false} is VALID [2022-04-28 09:14:21,386 INFO L290 TraceCheckUtils]: 19: Hoare triple {918#false} ~cond := #in~cond; {918#false} is VALID [2022-04-28 09:14:21,386 INFO L290 TraceCheckUtils]: 20: Hoare triple {918#false} assume 0 == ~cond; {918#false} is VALID [2022-04-28 09:14:21,387 INFO L290 TraceCheckUtils]: 21: Hoare triple {918#false} assume !false; {918#false} is VALID [2022-04-28 09:14:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 09:14:21,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 09:14:21,511 INFO L290 TraceCheckUtils]: 21: Hoare triple {918#false} assume !false; {918#false} is VALID [2022-04-28 09:14:21,511 INFO L290 TraceCheckUtils]: 20: Hoare triple {918#false} assume 0 == ~cond; {918#false} is VALID [2022-04-28 09:14:21,511 INFO L290 TraceCheckUtils]: 19: Hoare triple {918#false} ~cond := #in~cond; {918#false} is VALID [2022-04-28 09:14:21,511 INFO L272 TraceCheckUtils]: 18: Hoare triple {918#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {918#false} is VALID [2022-04-28 09:14:21,511 INFO L290 TraceCheckUtils]: 17: Hoare triple {918#false} assume !(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-28 09:14:21,512 INFO L290 TraceCheckUtils]: 16: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-28 09:14:21,512 INFO L290 TraceCheckUtils]: 15: Hoare triple {918#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {918#false} is VALID [2022-04-28 09:14:21,512 INFO L290 TraceCheckUtils]: 14: Hoare triple {918#false} assume !(~i~0 >= 1023); {918#false} is VALID [2022-04-28 09:14:21,512 INFO L290 TraceCheckUtils]: 13: Hoare triple {918#false} assume !!(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-28 09:14:21,512 INFO L290 TraceCheckUtils]: 12: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-28 09:14:21,512 INFO L290 TraceCheckUtils]: 11: Hoare triple {918#false} ~i~0 := 0; {918#false} is VALID [2022-04-28 09:14:21,514 INFO L290 TraceCheckUtils]: 10: Hoare triple {1028#(< main_~i~0 1024)} assume !(~i~0 < 1024); {918#false} is VALID [2022-04-28 09:14:21,515 INFO L290 TraceCheckUtils]: 9: Hoare triple {1032#(< main_~i~0 1023)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1028#(< main_~i~0 1024)} is VALID [2022-04-28 09:14:21,516 INFO L290 TraceCheckUtils]: 8: Hoare triple {1032#(< main_~i~0 1023)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1032#(< main_~i~0 1023)} is VALID [2022-04-28 09:14:21,516 INFO L290 TraceCheckUtils]: 7: Hoare triple {1039#(< main_~i~0 1022)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1032#(< main_~i~0 1023)} is VALID [2022-04-28 09:14:21,517 INFO L290 TraceCheckUtils]: 6: Hoare triple {1039#(< main_~i~0 1022)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1039#(< main_~i~0 1022)} is VALID [2022-04-28 09:14:21,517 INFO L290 TraceCheckUtils]: 5: Hoare triple {917#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {1039#(< main_~i~0 1022)} is VALID [2022-04-28 09:14:21,517 INFO L272 TraceCheckUtils]: 4: Hoare triple {917#true} call #t~ret5 := main(); {917#true} is VALID [2022-04-28 09:14:21,518 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-28 09:14:21,518 INFO L290 TraceCheckUtils]: 2: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-28 09:14:21,518 INFO L290 TraceCheckUtils]: 1: Hoare triple {917#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-28 09:14:21,518 INFO L272 TraceCheckUtils]: 0: Hoare triple {917#true} call ULTIMATE.init(); {917#true} is VALID [2022-04-28 09:14:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 09:14:21,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674564732] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 09:14:21,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-28 09:14:21,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-04-28 09:14:21,519 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:14:21,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1156959046] [2022-04-28 09:14:21,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1156959046] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:21,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:21,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 09:14:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900044492] [2022-04-28 09:14:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:14:21,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-28 09:14:21,520 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:14:21,520 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,536 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:21,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 09:14:21,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:21,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 09:14:21,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-04-28 09:14:21,537 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:21,721 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-04-28 09:14:21,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 09:14:21,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-28 09:14:21,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:14:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 37 transitions. [2022-04-28 09:14:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 37 transitions. [2022-04-28 09:14:21,727 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 37 transitions. [2022-04-28 09:14:21,761 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:21,766 INFO L225 Difference]: With dead ends: 35 [2022-04-28 09:14:21,766 INFO L226 Difference]: Without dead ends: 30 [2022-04-28 09:14:21,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-04-28 09:14:21,767 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 09:14:21,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 31 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 09:14:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-28 09:14:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-04-28 09:14:21,784 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:14:21,784 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,784 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,784 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:21,789 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-28 09:14:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-28 09:14:21,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:21,790 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:21,790 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 30 states. [2022-04-28 09:14:21,790 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 30 states. [2022-04-28 09:14:21,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:21,792 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-28 09:14:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-28 09:14:21,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:21,793 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:21,793 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:14:21,793 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:14:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-04-28 09:14:21,795 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2022-04-28 09:14:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:14:21,795 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-04-28 09:14:21,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:21,796 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 30 transitions. [2022-04-28 09:14:21,822 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-04-28 09:14:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 09:14:21,825 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:14:21,825 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:14:21,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 09:14:22,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 09:14:22,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:14:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:14:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1353970500, now seen corresponding path program 5 times [2022-04-28 09:14:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:22,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [838001817] [2022-04-28 09:14:22,046 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-28 09:14:22,046 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 09:14:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1353970500, now seen corresponding path program 6 times [2022-04-28 09:14:22,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:14:22,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293030167] [2022-04-28 09:14:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:14:22,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:14:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:14:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:14:22,148 INFO L290 TraceCheckUtils]: 0: Hoare triple {1268#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {1259#true} is VALID [2022-04-28 09:14:22,148 INFO L290 TraceCheckUtils]: 1: Hoare triple {1259#true} assume true; {1259#true} is VALID [2022-04-28 09:14:22,148 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1259#true} {1259#true} #63#return; {1259#true} is VALID [2022-04-28 09:14:22,149 INFO L272 TraceCheckUtils]: 0: Hoare triple {1259#true} call ULTIMATE.init(); {1268#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:14:22,149 INFO L290 TraceCheckUtils]: 1: Hoare triple {1268#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {1259#true} is VALID [2022-04-28 09:14:22,149 INFO L290 TraceCheckUtils]: 2: Hoare triple {1259#true} assume true; {1259#true} is VALID [2022-04-28 09:14:22,149 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1259#true} {1259#true} #63#return; {1259#true} is VALID [2022-04-28 09:14:22,149 INFO L272 TraceCheckUtils]: 4: Hoare triple {1259#true} call #t~ret5 := main(); {1259#true} is VALID [2022-04-28 09:14:22,149 INFO L290 TraceCheckUtils]: 5: Hoare triple {1259#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 6: Hoare triple {1259#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 7: Hoare triple {1259#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 8: Hoare triple {1259#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 9: Hoare triple {1259#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 10: Hoare triple {1259#true} assume !(~i~0 < 1024); {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 11: Hoare triple {1259#true} ~i~0 := 0; {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 12: Hoare triple {1259#true} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 13: Hoare triple {1259#true} assume !!(0 != #t~mem4);havoc #t~mem4; {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 14: Hoare triple {1259#true} assume !(~i~0 >= 1023); {1259#true} is VALID [2022-04-28 09:14:22,150 INFO L290 TraceCheckUtils]: 15: Hoare triple {1259#true} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {1259#true} is VALID [2022-04-28 09:14:22,151 INFO L290 TraceCheckUtils]: 16: Hoare triple {1259#true} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {1259#true} is VALID [2022-04-28 09:14:22,151 INFO L290 TraceCheckUtils]: 17: Hoare triple {1259#true} assume !!(0 != #t~mem4);havoc #t~mem4; {1259#true} is VALID [2022-04-28 09:14:22,151 INFO L290 TraceCheckUtils]: 18: Hoare triple {1259#true} assume !(~i~0 >= 1023); {1264#(<= main_~i~0 1022)} is VALID [2022-04-28 09:14:22,152 INFO L290 TraceCheckUtils]: 19: Hoare triple {1264#(<= main_~i~0 1022)} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {1265#(<= main_~i~0 1023)} is VALID [2022-04-28 09:14:22,152 INFO L290 TraceCheckUtils]: 20: Hoare triple {1265#(<= main_~i~0 1023)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {1265#(<= main_~i~0 1023)} is VALID [2022-04-28 09:14:22,152 INFO L290 TraceCheckUtils]: 21: Hoare triple {1265#(<= main_~i~0 1023)} assume !(0 != #t~mem4);havoc #t~mem4; {1265#(<= main_~i~0 1023)} is VALID [2022-04-28 09:14:22,153 INFO L272 TraceCheckUtils]: 22: Hoare triple {1265#(<= main_~i~0 1023)} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {1266#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 09:14:22,153 INFO L290 TraceCheckUtils]: 23: Hoare triple {1266#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {1267#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 09:14:22,154 INFO L290 TraceCheckUtils]: 24: Hoare triple {1267#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {1260#false} is VALID [2022-04-28 09:14:22,154 INFO L290 TraceCheckUtils]: 25: Hoare triple {1260#false} assume !false; {1260#false} is VALID [2022-04-28 09:14:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-28 09:14:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:14:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293030167] [2022-04-28 09:14:22,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293030167] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:22,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:22,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 09:14:22,155 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:14:22,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [838001817] [2022-04-28 09:14:22,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [838001817] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:14:22,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:14:22,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 09:14:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157989855] [2022-04-28 09:14:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:14:22,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-04-28 09:14:22,156 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:14:22,156 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:22,172 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:22,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 09:14:22,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:14:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 09:14:22,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-04-28 09:14:22,174 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:22,319 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-04-28 09:14:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 09:14:22,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-04-28 09:14:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:14:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2022-04-28 09:14:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2022-04-28 09:14:22,322 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 26 transitions. [2022-04-28 09:14:22,346 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:22,346 INFO L225 Difference]: With dead ends: 28 [2022-04-28 09:14:22,346 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 09:14:22,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-04-28 09:14:22,347 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 09:14:22,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 09:14:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 09:14:22,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 09:14:22,348 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:14:22,348 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-04-28 09:14:22,348 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-04-28 09:14:22,348 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-04-28 09:14:22,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:22,349 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 09:14:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 09:14:22,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:22,349 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:22,349 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-04-28 09:14:22,349 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-04-28 09:14:22,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:14:22,349 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 09:14:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 09:14:22,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:22,349 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:14:22,349 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:14:22,349 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:14:22,350 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) [2022-04-28 09:14:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 09:14:22,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-04-28 09:14:22,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:14:22,350 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 09:14:22,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 09:14:22,350 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 09:14:22,350 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:14:22,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 09:14:22,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:14:22,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 09:14:22,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-28 09:14:22,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 09:14:22,488 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-04-28 09:14:22,488 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-04-28 09:14:22,489 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-04-28 09:14:22,489 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-04-28 09:14:22,489 INFO L895 garLoopResultBuilder]: At program point L29(lines 29 31) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-28 09:14:22,489 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2022-04-28 09:14:22,489 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2022-04-28 09:14:22,489 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2022-04-28 09:14:22,489 INFO L895 garLoopResultBuilder]: At program point L28-1(lines 28 32) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-28 09:14:22,489 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 32) the Hoare annotation is: (<= main_~i~0 1022) [2022-04-28 09:14:22,489 INFO L895 garLoopResultBuilder]: At program point L28-4(lines 28 32) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-28 09:14:22,489 INFO L895 garLoopResultBuilder]: At program point L28-5(lines 28 32) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-28 09:14:22,489 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point L24-3(lines 24 26) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point L24-4(lines 24 26) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 09:14:22,490 INFO L895 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2022-04-28 09:14:22,490 INFO L902 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2022-04-28 09:14:22,491 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: true [2022-04-28 09:14:22,491 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 09:14:22,493 INFO L356 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2] [2022-04-28 09:14:22,495 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 09:14:22,498 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 09:14:22,498 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 09:14:22,499 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2022-04-28 09:14:22,505 INFO L163 areAnnotationChecker]: CFG has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 09:14:22,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:14:22 BoogieIcfgContainer [2022-04-28 09:14:22,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 09:14:22,511 INFO L158 Benchmark]: Toolchain (without parser) took 4440.96ms. Allocated memory was 187.7MB in the beginning and 232.8MB in the end (delta: 45.1MB). Free memory was 142.0MB in the beginning and 111.4MB in the end (delta: 30.7MB). Peak memory consumption was 75.8MB. Max. memory is 8.0GB. [2022-04-28 09:14:22,511 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 09:14:22,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.44ms. Allocated memory is still 187.7MB. Free memory was 141.8MB in the beginning and 166.3MB in the end (delta: -24.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 09:14:22,512 INFO L158 Benchmark]: Boogie Preprocessor took 27.71ms. Allocated memory is still 187.7MB. Free memory was 166.3MB in the beginning and 164.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 09:14:22,512 INFO L158 Benchmark]: RCFGBuilder took 199.98ms. Allocated memory is still 187.7MB. Free memory was 164.8MB in the beginning and 153.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 09:14:22,512 INFO L158 Benchmark]: TraceAbstraction took 4014.00ms. Allocated memory was 187.7MB in the beginning and 232.8MB in the end (delta: 45.1MB). Free memory was 153.2MB in the beginning and 111.4MB in the end (delta: 41.8MB). Peak memory consumption was 87.7MB. Max. memory is 8.0GB. [2022-04-28 09:14:22,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.44ms. Allocated memory is still 187.7MB. Free memory was 141.8MB in the beginning and 166.3MB in the end (delta: -24.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.71ms. Allocated memory is still 187.7MB. Free memory was 166.3MB in the beginning and 164.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 199.98ms. Allocated memory is still 187.7MB. Free memory was 164.8MB in the beginning and 153.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4014.00ms. Allocated memory was 187.7MB in the beginning and 232.8MB in the end (delta: 45.1MB). Free memory was 153.2MB in the beginning and 111.4MB in the end (delta: 41.8MB). Peak memory consumption was 87.7MB. 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: 16]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 95 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 55 PreInvPairs, 88 NumberOfFragments, 63 HoareAnnotationTreeSize, 55 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 25 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.1s 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 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: i <= 1023 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-04-28 09:14:22,545 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...