/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 11:08:14,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 11:08:14,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 11:08:14,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 11:08:14,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 11:08:14,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 11:08:14,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 11:08:14,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 11:08:14,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 11:08:14,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 11:08:14,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 11:08:14,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 11:08:14,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 11:08:14,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 11:08:14,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 11:08:14,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 11:08:14,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 11:08:14,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 11:08:14,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 11:08:14,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 11:08:14,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 11:08:14,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 11:08:14,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 11:08:14,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 11:08:14,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 11:08:14,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 11:08:14,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 11:08:14,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 11:08:14,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 11:08:14,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 11:08:14,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 11:08:14,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 11:08:14,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 11:08:14,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 11:08:14,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 11:08:14,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 11:08:14,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 11:08:14,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 11:08:14,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 11:08:14,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 11:08:14,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 11:08:14,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 11:08:14,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 11:08:14,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 11:08:14,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 11:08:14,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 11:08:14,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 11:08:14,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 11:08:14,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:08:14,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 11:08:14,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 11:08:14,549 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 11:08:14,549 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 11:08:14,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 11:08:14,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 11:08:14,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 11:08:14,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 11:08:14,707 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 11:08:14,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c [2022-01-31 11:08:14,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b131a4e2/fa03cfb3bc534ef7bd7865cd660dceb1/FLAGf2d000d1a [2022-01-31 11:08:15,101 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 11:08:15,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c [2022-01-31 11:08:15,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b131a4e2/fa03cfb3bc534ef7bd7865cd660dceb1/FLAGf2d000d1a [2022-01-31 11:08:15,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b131a4e2/fa03cfb3bc534ef7bd7865cd660dceb1 [2022-01-31 11:08:15,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 11:08:15,119 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 11:08:15,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 11:08:15,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 11:08:15,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 11:08:15,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9c10a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15, skipping insertion in model container [2022-01-31 11:08:15,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 11:08:15,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 11:08:15,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c[590,603] [2022-01-31 11:08:15,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:08:15,297 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 11:08:15,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c[590,603] [2022-01-31 11:08:15,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:08:15,327 INFO L208 MainTranslator]: Completed translation [2022-01-31 11:08:15,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15 WrapperNode [2022-01-31 11:08:15,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 11:08:15,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 11:08:15,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 11:08:15,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 11:08:15,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 11:08:15,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 11:08:15,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 11:08:15,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 11:08:15,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:08:15,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:08:15,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 11:08:15,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 11:08:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 11:08:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 11:08:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 11:08:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 11:08:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 11:08:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 11:08:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 11:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 11:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 11:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 11:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 11:08:15,456 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 11:08:15,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 11:08:15,629 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 11:08:15,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 11:08:15,633 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 11:08:15,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:08:15 BoogieIcfgContainer [2022-01-31 11:08:15,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 11:08:15,635 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 11:08:15,635 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 11:08:15,636 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 11:08:15,654 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:08:15" (1/1) ... [2022-01-31 11:08:15,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:08:15 BasicIcfg [2022-01-31 11:08:15,682 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 11:08:15,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 11:08:15,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 11:08:15,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 11:08:15,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:08:15" (1/4) ... [2022-01-31 11:08:15,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88ddb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:08:15, skipping insertion in model container [2022-01-31 11:08:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:08:15" (2/4) ... [2022-01-31 11:08:15,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88ddb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:08:15, skipping insertion in model container [2022-01-31 11:08:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:08:15" (3/4) ... [2022-01-31 11:08:15,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88ddb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:08:15, skipping insertion in model container [2022-01-31 11:08:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:08:15" (4/4) ... [2022-01-31 11:08:15,687 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1f.cJordan [2022-01-31 11:08:15,690 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 11:08:15,690 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 11:08:15,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 11:08:15,759 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 11:08:15,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 11:08:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:08:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 11:08:15,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:08:15,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:08:15,780 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:08:15,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:08:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1526003943, now seen corresponding path program 1 times [2022-01-31 11:08:15,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:08:15,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551003357] [2022-01-31 11:08:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:08:15,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:08:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:08:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:08:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:08:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:08:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:08:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:08:15,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:08:15,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551003357] [2022-01-31 11:08:15,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551003357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:08:15,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:08:15,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 11:08:15,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121294322] [2022-01-31 11:08:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:08:15,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 11:08:15,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:08:16,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 11:08:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:08:16,015 INFO L87 Difference]: Start difference. First operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:08:16,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:08:16,092 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-01-31 11:08:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 11:08:16,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-01-31 11:08:16,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:08:16,103 INFO L225 Difference]: With dead ends: 36 [2022-01-31 11:08:16,103 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 11:08:16,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:08:16,107 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:08:16,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:08:16,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 11:08:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 11:08:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:08:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-31 11:08:16,137 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2022-01-31 11:08:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:08:16,137 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-31 11:08:16,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:08:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-31 11:08:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 11:08:16,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:08:16,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:08:16,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 11:08:16,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:08:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:08:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1849012571, now seen corresponding path program 1 times [2022-01-31 11:08:16,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:08:16,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978262125] [2022-01-31 11:08:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:08:16,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:08:16,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:08:16,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670832304] [2022-01-31 11:08:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:08:16,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:08:16,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:08:16,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:08:16,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 11:08:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:08:16,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 11:08:16,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:08:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:08:16,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 11:08:16,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:08:16,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978262125] [2022-01-31 11:08:16,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:08:16,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670832304] [2022-01-31 11:08:16,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670832304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:08:16,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:08:16,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 11:08:16,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208782382] [2022-01-31 11:08:16,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:08:16,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 11:08:16,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:08:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 11:08:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 11:08:16,349 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:08:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:08:16,400 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-01-31 11:08:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 11:08:16,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-01-31 11:08:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:08:16,402 INFO L225 Difference]: With dead ends: 41 [2022-01-31 11:08:16,402 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 11:08:16,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 11:08:16,403 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 11:08:16,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 35 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 11:08:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 11:08:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2022-01-31 11:08:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:08:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 11:08:16,409 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2022-01-31 11:08:16,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:08:16,409 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 11:08:16,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:08:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 11:08:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 11:08:16,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:08:16,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:08:16,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 11:08:16,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:08:16,618 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:08:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:08:16,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2111943643, now seen corresponding path program 1 times [2022-01-31 11:08:16,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:08:16,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255687476] [2022-01-31 11:08:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:08:16,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:08:16,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:08:16,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287721247] [2022-01-31 11:08:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:08:16,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:08:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:08:16,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:08:16,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 11:08:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 11:08:16,688 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 11:08:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 11:08:16,712 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 11:08:16,712 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 11:08:16,712 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 11:08:16,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 11:08:16,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 11:08:16,944 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 11:08:16,946 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 11:08:16,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:08:16 BasicIcfg [2022-01-31 11:08:16,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 11:08:16,962 INFO L158 Benchmark]: Toolchain (without parser) took 1842.89ms. Allocated memory was 219.2MB in the beginning and 268.4MB in the end (delta: 49.3MB). Free memory was 165.4MB in the beginning and 175.9MB in the end (delta: -10.5MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2022-01-31 11:08:16,962 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 181.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 11:08:16,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.16ms. Allocated memory was 219.2MB in the beginning and 268.4MB in the end (delta: 49.3MB). Free memory was 165.3MB in the beginning and 239.3MB in the end (delta: -74.0MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-01-31 11:08:16,963 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 268.4MB. Free memory was 239.3MB in the beginning and 237.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 11:08:16,963 INFO L158 Benchmark]: RCFGBuilder took 270.40ms. Allocated memory is still 268.4MB. Free memory was 237.8MB in the beginning and 226.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 11:08:16,963 INFO L158 Benchmark]: IcfgTransformer took 46.67ms. Allocated memory is still 268.4MB. Free memory was 226.3MB in the beginning and 224.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 11:08:16,964 INFO L158 Benchmark]: TraceAbstraction took 1278.08ms. Allocated memory is still 268.4MB. Free memory was 224.2MB in the beginning and 175.9MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2022-01-31 11:08:16,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 181.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.16ms. Allocated memory was 219.2MB in the beginning and 268.4MB in the end (delta: 49.3MB). Free memory was 165.3MB in the beginning and 239.3MB in the end (delta: -74.0MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 268.4MB. Free memory was 239.3MB in the beginning and 237.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 270.40ms. Allocated memory is still 268.4MB. Free memory was 237.8MB in the beginning and 226.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 46.67ms. Allocated memory is still 268.4MB. Free memory was 226.3MB in the beginning and 224.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1278.08ms. Allocated memory is still 268.4MB. Free memory was 224.2MB in the beginning and 175.9MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=7, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [\old(N)=0, a={4:0}, b={-1:0}, i=0, N=1] [L31] COND TRUE i