/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 21:59:58,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 21:59:58,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 21:59:58,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 21:59:58,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 21:59:58,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 21:59:58,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 21:59:58,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 21:59:58,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 21:59:58,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 21:59:58,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 21:59:58,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 21:59:58,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 21:59:58,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 21:59:58,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 21:59:58,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 21:59:58,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 21:59:58,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 21:59:58,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 21:59:58,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 21:59:58,220 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 21:59:58,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 21:59:58,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 21:59:58,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 21:59:58,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 21:59:58,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 21:59:58,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 21:59:58,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 21:59:58,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 21:59:58,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-07 21:59:58,255 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 21:59:58,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 21:59:58,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-07 21:59:58,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-07 21:59:58,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-07 21:59:58,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-07 21:59:58,257 INFO L138 SettingsManager]: * Use SBE=true [2022-04-07 21:59:58,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 21:59:58,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 21:59:58,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 21:59:58,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 21:59:58,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 21:59:58,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 21:59:58,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 21:59:58,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 21:59:58,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 21:59:58,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 21:59:58,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 21:59:58,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 21:59:58,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 21:59:58,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 21:59:58,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-07 21:59:58,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-07 21:59:58,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-07 21:59:58,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-07 21:59:58,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 21:59:58,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-07 21:59:58,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-07 21:59:58,264 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-07 21:59:58,264 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 21:59:58,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 21:59:58,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 21:59:58,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 21:59:58,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 21:59:58,431 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 21:59:58,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2022-04-07 21:59:58,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3562e8a/19c43dc354604594a94e1dbfce42ae56/FLAGdce5a1573 [2022-04-07 21:59:58,794 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 21:59:58,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2022-04-07 21:59:58,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3562e8a/19c43dc354604594a94e1dbfce42ae56/FLAGdce5a1573 [2022-04-07 21:59:59,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3562e8a/19c43dc354604594a94e1dbfce42ae56 [2022-04-07 21:59:59,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 21:59:59,240 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-07 21:59:59,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 21:59:59,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 21:59:59,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 21:59:59,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dabef9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59, skipping insertion in model container [2022-04-07 21:59:59,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 21:59:59,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 21:59:59,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c[317,330] [2022-04-07 21:59:59,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 21:59:59,425 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 21:59:59,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c[317,330] [2022-04-07 21:59:59,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 21:59:59,444 INFO L208 MainTranslator]: Completed translation [2022-04-07 21:59:59,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59 WrapperNode [2022-04-07 21:59:59,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 21:59:59,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 21:59:59,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 21:59:59,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 21:59:59,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 21:59:59,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 21:59:59,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 21:59:59,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 21:59:59,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 21:59:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 21:59:59,506 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) [2022-04-07 21:59:59,563 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 [2022-04-07 21:59:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 21:59:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 21:59:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 21:59:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-07 21:59:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 21:59:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 21:59:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 21:59:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 21:59:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 21:59:59,625 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 21:59:59,626 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 21:59:59,724 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 21:59:59,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 21:59:59,728 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 21:59:59,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 09:59:59 BoogieIcfgContainer [2022-04-07 21:59:59,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 21:59:59,730 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-07 21:59:59,730 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-07 21:59:59,739 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-07 21:59:59,741 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 09:59:59" (1/1) ... [2022-04-07 21:59:59,742 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-07 21:59:59,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 09:59:59 BasicIcfg [2022-04-07 21:59:59,758 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-07 21:59:59,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 21:59:59,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 21:59:59,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 21:59:59,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 09:59:59" (1/4) ... [2022-04-07 21:59:59,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459c2c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 09:59:59, skipping insertion in model container [2022-04-07 21:59:59,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 09:59:59" (2/4) ... [2022-04-07 21:59:59,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459c2c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 09:59:59, skipping insertion in model container [2022-04-07 21:59:59,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 09:59:59" (3/4) ... [2022-04-07 21:59:59,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459c2c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 09:59:59, skipping insertion in model container [2022-04-07 21:59:59,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 09:59:59" (4/4) ... [2022-04-07 21:59:59,778 INFO L111 eAbstractionObserver]: Analyzing ICFG nec11.cqvasr [2022-04-07 21:59:59,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-07 21:59:59,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 21:59:59,816 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 21:59:59,821 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-04-07 21:59:59,821 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 21:59:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-04-07 21:59:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-07 21:59:59,835 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 21:59:59,836 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 21:59:59,836 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 21:59:59,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 21:59:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 447419557, now seen corresponding path program 1 times [2022-04-07 21:59:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 21:59:59,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72190455] [2022-04-07 21:59:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 21:59:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 21:59:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 21:59:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 21:59:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 21:59:59,944 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [49] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#length_1| 2) 8) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {24#true} is VALID [2022-04-07 21:59:59,944 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} [52] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24#true} is VALID [2022-04-07 21:59:59,945 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} [68] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24#true} is VALID [2022-04-07 21:59:59,946 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} [47] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 21:59:59,946 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [49] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#length_1| 2) 8) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {24#true} is VALID [2022-04-07 21:59:59,946 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} [52] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24#true} is VALID [2022-04-07 21:59:59,947 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} [68] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24#true} is VALID [2022-04-07 21:59:59,947 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} [48] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24#true} is VALID [2022-04-07 21:59:59,947 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} [51] mainENTRY-->L21-2: Formula: (and (= v_main_~c~0_1 |v_main_#t~nondet4_2|) (= v_main_~len~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~i~0=v_main_~i~0_1, main_~c~0=v_main_~c~0_1, main_~len~0=v_main_~len~0_2, main_~a~0=v_main_~a~0_1} AuxVars[] AssignedVars[main_#t~nondet4, main_~len~0, main_~i~0, main_~c~0, main_~a~0] {24#true} is VALID [2022-04-07 21:59:59,947 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} [53] L21-2-->L21-3: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {25#false} is VALID [2022-04-07 21:59:59,948 INFO L272 TraceCheckUtils]: 7: Hoare triple {25#false} [56] L21-3-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= 5 v_main_~len~0_8) 1 0)) InVars {main_~len~0=v_main_~len~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~len~0] {25#false} is VALID [2022-04-07 21:59:59,948 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#false} [60] __VERIFIER_assertENTRY-->L6: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {25#false} is VALID [2022-04-07 21:59:59,948 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} [63] L6-->L7: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {25#false} is VALID [2022-04-07 21:59:59,948 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} [65] L7-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#false} is VALID [2022-04-07 21:59:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 21:59:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 21:59:59,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72190455] [2022-04-07 21:59:59,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72190455] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 21:59:59,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 21:59:59,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 21:59:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417177751] [2022-04-07 21:59:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 21:59:59,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-07 21:59:59,955 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 21:59:59,957 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-07 21:59:59,968 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 21:59:59,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 21:59:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 21:59:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 21:59:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 21:59:59,983 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-07 22:00:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 22:00:00,027 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-07 22:00:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 22:00:00,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-07 22:00:00,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 22:00:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-07 22:00:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-07 22:00:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-07 22:00:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-07 22:00:00,035 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 37 transitions. [2022-04-07 22:00:00,069 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 22:00:00,074 INFO L225 Difference]: With dead ends: 33 [2022-04-07 22:00:00,074 INFO L226 Difference]: Without dead ends: 14 [2022-04-07 22:00:00,076 INFO L912 BasicCegarLoop]: 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 [2022-04-07 22:00:00,078 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 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 [2022-04-07 22:00:00,079 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 22:00:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-07 22:00:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-07 22:00:00,096 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 22:00:00,096 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-07 22:00:00,097 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-07 22:00:00,097 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-07 22:00:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 22:00:00,099 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-07 22:00:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-07 22:00:00,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 22:00:00,099 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 22:00:00,099 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 14 states. [2022-04-07 22:00:00,100 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 14 states. [2022-04-07 22:00:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 22:00:00,101 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-07 22:00:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-07 22:00:00,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 22:00:00,101 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 22:00:00,102 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 22:00:00,102 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 22:00:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-07 22:00:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-07 22:00:00,104 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-07 22:00:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 22:00:00,104 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-07 22:00:00,104 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-07 22:00:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-07 22:00:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-07 22:00:00,105 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 22:00:00,105 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 22:00:00,105 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 22:00:00,105 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 22:00:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 22:00:00,106 INFO L85 PathProgramCache]: Analyzing trace with hash 448343078, now seen corresponding path program 1 times [2022-04-07 22:00:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 22:00:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692847048] [2022-04-07 22:00:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 22:00:00,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 22:00:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 22:00:00,121 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-07 22:00:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 22:00:00,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-07 22:00:00,140 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-07 22:00:00,141 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 22:00:00,143 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 22:00:00,145 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-07 22:00:00,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 22:00:00,157 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-07 22:00:00,157 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-07 22:00:00,157 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-07 22:00:00,157 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L6-2 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2022-04-07 22:00:00,158 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-07 22:00:00,159 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2022-04-07 22:00:00,159 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-07 22:00:00,159 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-07 22:00:00,159 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-07 22:00:00,159 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-07 22:00:00,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 10:00:00 BasicIcfg [2022-04-07 22:00:00,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 22:00:00,160 INFO L158 Benchmark]: Toolchain (without parser) took 920.44ms. Allocated memory is still 223.3MB. Free memory was 165.7MB in the beginning and 146.6MB in the end (delta: 19.1MB). Peak memory consumption was 19.6MB. Max. memory is 8.0GB. [2022-04-07 22:00:00,161 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 223.3MB. Free memory was 182.1MB in the beginning and 182.0MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 22:00:00,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.52ms. Allocated memory is still 223.3MB. Free memory was 165.5MB in the beginning and 194.8MB in the end (delta: -29.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-07 22:00:00,161 INFO L158 Benchmark]: Boogie Preprocessor took 30.05ms. Allocated memory is still 223.3MB. Free memory was 194.8MB in the beginning and 193.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-07 22:00:00,162 INFO L158 Benchmark]: RCFGBuilder took 250.54ms. Allocated memory is still 223.3MB. Free memory was 193.2MB in the beginning and 183.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-07 22:00:00,162 INFO L158 Benchmark]: IcfgTransformer took 28.72ms. Allocated memory is still 223.3MB. Free memory was 183.3MB in the beginning and 182.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-07 22:00:00,162 INFO L158 Benchmark]: TraceAbstraction took 386.79ms. Allocated memory is still 223.3MB. Free memory was 181.4MB in the beginning and 146.6MB in the end (delta: 34.9MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2022-04-07 22:00:00,164 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 0.08ms. Allocated memory is still 223.3MB. Free memory was 182.1MB in the beginning and 182.0MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.52ms. Allocated memory is still 223.3MB. Free memory was 165.5MB in the beginning and 194.8MB in the end (delta: -29.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.05ms. Allocated memory is still 223.3MB. Free memory was 194.8MB in the beginning and 193.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 250.54ms. Allocated memory is still 223.3MB. Free memory was 193.2MB in the beginning and 183.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 28.72ms. Allocated memory is still 223.3MB. Free memory was 183.3MB in the beginning and 182.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 386.79ms. Allocated memory is still 223.3MB. Free memory was 181.4MB in the beginning and 146.6MB in the end (delta: 34.9MB). Peak memory consumption was 34.6MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; VAL [c=0, len=0] [L21] COND FALSE !(\read(c)) VAL [c=0, len=0] [L30] CALL __VERIFIER_assert(len==5) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 21 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-07 22:00:00,212 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...