/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 20:30:21,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 20:30:21,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 20:30:21,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 20:30:21,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 20:30:21,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 20:30:21,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 20:30:21,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 20:30:21,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 20:30:21,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 20:30:21,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 20:30:21,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 20:30:21,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 20:30:21,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 20:30:21,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 20:30:21,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 20:30:21,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 20:30:21,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 20:30:21,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 20:30:21,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 20:30:21,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 20:30:21,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 20:30:21,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 20:30:21,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 20:30:21,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 20:30:21,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 20:30:21,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 20:30:21,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 20:30:21,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 20:30:21,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 20:30:21,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 20:30:21,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 20:30:21,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 20:30:21,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 20:30:21,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 20:30:21,096 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 20:30:21,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 20:30:21,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 20:30:21,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 20:30:21,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 20:30:21,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 20:30:21,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 20:30:21,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 20:30:21,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 20:30:21,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 20:30:21,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 20:30:21,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 20:30:21,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 20:30:21,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:30:21,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 20:30:21,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 20:30:21,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 20:30:21,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 20:30:21,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 20:30:21,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 20:30:21,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 20:30:21,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 20:30:21,100 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 20:30:21,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 20:30:21,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 20:30:21,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 20:30:21,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 20:30:21,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 20:30:21,365 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 20:30:21,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2022-02-23 20:30:21,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539833c0c/f0d75df786134154a828c4d9cfff69e2/FLAGaa60aa206 [2022-02-23 20:30:21,881 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 20:30:21,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2022-02-23 20:30:21,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539833c0c/f0d75df786134154a828c4d9cfff69e2/FLAGaa60aa206 [2022-02-23 20:30:22,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539833c0c/f0d75df786134154a828c4d9cfff69e2 [2022-02-23 20:30:22,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 20:30:22,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 20:30:22,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 20:30:22,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 20:30:22,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 20:30:22,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff10f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22, skipping insertion in model container [2022-02-23 20:30:22,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 20:30:22,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 20:30:22,530 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/terminator_02-1.c[327,340] [2022-02-23 20:30:22,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:30:22,555 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 20:30:22,565 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/terminator_02-1.c[327,340] [2022-02-23 20:30:22,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:30:22,582 INFO L208 MainTranslator]: Completed translation [2022-02-23 20:30:22,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22 WrapperNode [2022-02-23 20:30:22,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 20:30:22,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 20:30:22,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 20:30:22,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 20:30:22,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 20:30:22,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 20:30:22,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 20:30:22,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 20:30:22,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:30:22,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:30:22,665 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) [2022-02-23 20:30:22,671 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 [2022-02-23 20:30:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 20:30:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 20:30:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 20:30:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 20:30:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 20:30:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 20:30:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 20:30:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 20:30:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 20:30:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 20:30:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 20:30:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-23 20:30:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 20:30:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 20:30:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 20:30:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 20:30:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 20:30:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 20:30:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 20:30:22,765 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 20:30:22,766 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 20:30:22,873 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 20:30:22,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 20:30:22,878 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 20:30:22,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:30:22 BoogieIcfgContainer [2022-02-23 20:30:22,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 20:30:22,880 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 20:30:22,880 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 20:30:22,881 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 20:30:22,884 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:30:22" (1/1) ... [2022-02-23 20:30:22,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:30:22 BasicIcfg [2022-02-23 20:30:22,898 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 20:30:22,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 20:30:22,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 20:30:22,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 20:30:22,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 08:30:22" (1/4) ... [2022-02-23 20:30:22,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc51c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:30:22, skipping insertion in model container [2022-02-23 20:30:22,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:30:22" (2/4) ... [2022-02-23 20:30:22,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc51c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:30:22, skipping insertion in model container [2022-02-23 20:30:22,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:30:22" (3/4) ... [2022-02-23 20:30:22,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc51c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:30:22, skipping insertion in model container [2022-02-23 20:30:22,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:30:22" (4/4) ... [2022-02-23 20:30:22,905 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.cqvasr [2022-02-23 20:30:22,909 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 20:30:22,910 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 20:30:22,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 20:30:22,951 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 20:30:22,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 20:30:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-02-23 20:30:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 20:30:22,968 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:30:22,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:30:22,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:30:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:30:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash -154368955, now seen corresponding path program 1 times [2022-02-23 20:30:22,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:30:22,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293520273] [2022-02-23 20:30:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:30:22,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:30:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:30:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:30:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:30:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:30:23,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:30:23,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293520273] [2022-02-23 20:30:23,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293520273] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:30:23,199 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:30:23,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 20:30:23,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655446313] [2022-02-23 20:30:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:30:23,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 20:30:23,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:30:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 20:30:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 20:30:23,244 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-02-23 20:30:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:30:23,273 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-02-23 20:30:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 20:30:23,276 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 [2022-02-23 20:30:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:30:23,281 INFO L225 Difference]: With dead ends: 32 [2022-02-23 20:30:23,281 INFO L226 Difference]: Without dead ends: 13 [2022-02-23 20:30:23,283 INFO L932 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 [2022-02-23 20:30:23,287 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 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 [2022-02-23 20:30:23,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:30:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-23 20:30:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-23 20:30:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-02-23 20:30:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-02-23 20:30:23,315 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2022-02-23 20:30:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:30:23,316 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-02-23 20:30:23,316 INFO L471 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) [2022-02-23 20:30:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-02-23 20:30:23,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 20:30:23,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:30:23,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:30:23,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 20:30:23,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:30:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:30:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash -153445434, now seen corresponding path program 1 times [2022-02-23 20:30:23,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:30:23,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306459659] [2022-02-23 20:30:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:30:23,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:30:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 20:30:23,336 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-23 20:30:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 20:30:23,362 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-23 20:30:23,363 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-23 20:30:23,364 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 20:30:23,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 20:30:23,369 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-23 20:30:23,372 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 20:30:23,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:30:23 BasicIcfg [2022-02-23 20:30:23,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 20:30:23,389 INFO L158 Benchmark]: Toolchain (without parser) took 1097.26ms. Allocated memory is still 182.5MB. Free memory was 130.1MB in the beginning and 121.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-02-23 20:30:23,389 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 182.5MB. Free memory was 146.3MB in the beginning and 146.2MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 20:30:23,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.98ms. Allocated memory is still 182.5MB. Free memory was 129.8MB in the beginning and 158.9MB in the end (delta: -29.0MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-02-23 20:30:23,390 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 182.5MB. Free memory was 158.9MB in the beginning and 157.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 20:30:23,391 INFO L158 Benchmark]: RCFGBuilder took 251.86ms. Allocated memory is still 182.5MB. Free memory was 157.5MB in the beginning and 147.9MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-23 20:30:23,391 INFO L158 Benchmark]: IcfgTransformer took 18.43ms. Allocated memory is still 182.5MB. Free memory was 147.9MB in the beginning and 146.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 20:30:23,391 INFO L158 Benchmark]: TraceAbstraction took 488.65ms. Allocated memory is still 182.5MB. Free memory was 146.3MB in the beginning and 121.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-02-23 20:30:23,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 182.5MB. Free memory was 146.3MB in the beginning and 146.2MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 290.98ms. Allocated memory is still 182.5MB. Free memory was 129.8MB in the beginning and 158.9MB in the end (delta: -29.0MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 182.5MB. Free memory was 158.9MB in the beginning and 157.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 251.86ms. Allocated memory is still 182.5MB. Free memory was 157.5MB in the beginning and 147.9MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 18.43ms. Allocated memory is still 182.5MB. Free memory was 147.9MB in the beginning and 146.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 488.65ms. Allocated memory is still 182.5MB. Free memory was 146.3MB in the beginning and 121.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int x=__VERIFIER_nondet_int(); [L17] int y=__VERIFIER_nondet_int(); [L18] int z=__VERIFIER_nondet_int(); [L20] COND FALSE !(x<100 && 100