/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:54:21,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:54:21,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:54:21,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 11:54:21,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:54:21,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:54:21,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:54:21,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:54:21,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:54:21,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:54:21,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:54:21,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:54:21,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:54:21,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:54:21,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:54:21,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:54:21,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 11:54:21,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:54:21,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:54:21,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:54:21,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 11:54:21,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:54:21,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:54:21,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:54:21,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:54:21,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:54:21,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:54:21,698 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:54:21,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:54:21,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:54:21,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:54:21,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:54:21,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:54:21,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:54:21,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:54:21,699 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:54:21,699 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:54:21,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:54:21,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:54:21,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:54:21,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:54:21,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:54:21,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:54:21,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:54:21,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:54:21,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:54:21,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:54:21,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:54:21,701 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:54:21,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:54:21,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:54:21,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:54:21,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:54:21,703 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:54:21,703 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:54:21,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:54:21,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:54:21,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:54:21,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:54:21,903 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:54:21,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue-1.i [2022-01-10 11:54:21,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bcd4fc4/f60609437be94c6bae4ef443bf71719e/FLAG091ccb523 [2022-01-10 11:54:22,339 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:54:22,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-1.i [2022-01-10 11:54:22,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bcd4fc4/f60609437be94c6bae4ef443bf71719e/FLAG091ccb523 [2022-01-10 11:54:22,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bcd4fc4/f60609437be94c6bae4ef443bf71719e [2022-01-10 11:54:22,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:54:22,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:54:22,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:54:22,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:54:22,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:54:22,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634873af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22, skipping insertion in model container [2022-01-10 11:54:22,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:54:22,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:54:22,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2022-01-10 11:54:22,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:54:22,709 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:54:22,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2022-01-10 11:54:22,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:54:22,772 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:54:22,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22 WrapperNode [2022-01-10 11:54:22,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:54:22,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:54:22,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:54:22,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:54:22,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,812 INFO L137 Inliner]: procedures = 122, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 119 [2022-01-10 11:54:22,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:54:22,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:54:22,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:54:22,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:54:22,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:54:22,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:54:22,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:54:22,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:54:22,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (1/1) ... [2022-01-10 11:54:22,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:54:22,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:54:22,881 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) [2022-01-10 11:54:22,888 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 [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:54:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:54:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:54:22,977 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:54:22,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:54:23,301 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:54:23,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:54:23,304 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 11:54:23,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:23 BoogieIcfgContainer [2022-01-10 11:54:23,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:54:23,306 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:54:23,306 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:54:23,307 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:54:23,320 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:23" (1/1) ... [2022-01-10 11:54:23,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:23 BasicIcfg [2022-01-10 11:54:23,379 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:54:23,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:54:23,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:54:23,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:54:23,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:54:22" (1/4) ... [2022-01-10 11:54:23,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e55f2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:23, skipping insertion in model container [2022-01-10 11:54:23,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:22" (2/4) ... [2022-01-10 11:54:23,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e55f2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:23, skipping insertion in model container [2022-01-10 11:54:23,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:23" (3/4) ... [2022-01-10 11:54:23,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e55f2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:54:23, skipping insertion in model container [2022-01-10 11:54:23,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:23" (4/4) ... [2022-01-10 11:54:23,384 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-1.iTransformedIcfg [2022-01-10 11:54:23,387 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:54:23,387 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 11:54:23,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:54:23,415 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=PETRI_NET, 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 [2022-01-10 11:54:23,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 11:54:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 11:54:23,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:23,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:23,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:54:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1339465911, now seen corresponding path program 1 times [2022-01-10 11:54:23,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:23,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355726312] [2022-01-10 11:54:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:23,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:54:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:54:23,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:54:23,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355726312] [2022-01-10 11:54:23,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355726312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:54:23,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:54:23,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 11:54:23,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573961725] [2022-01-10 11:54:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:54:23,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 11:54:23,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:54:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 11:54:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:54:23,610 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:54:23,623 INFO L93 Difference]: Finished difference Result 46 states and 75 transitions. [2022-01-10 11:54:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 11:54:23,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 11:54:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:54:23,629 INFO L225 Difference]: With dead ends: 46 [2022-01-10 11:54:23,629 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 11:54:23,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:54:23,635 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:54:23,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:54:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 11:54:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-10 11:54:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2022-01-10 11:54:23,660 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 10 [2022-01-10 11:54:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:54:23,660 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2022-01-10 11:54:23,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:54:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2022-01-10 11:54:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 11:54:23,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:54:23,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:54:23,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:54:23,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:54:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:54:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1090565704, now seen corresponding path program 1 times [2022-01-10 11:54:23,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:54:23,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136238535] [2022-01-10 11:54:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:54:23,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:54:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 11:54:23,785 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 11:54:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 11:54:23,880 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 11:54:23,880 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 11:54:23,881 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 11:54:23,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:54:23,885 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-10 11:54:23,887 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 11:54:23,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:54:23 BasicIcfg [2022-01-10 11:54:23,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 11:54:23,912 INFO L158 Benchmark]: Toolchain (without parser) took 1543.05ms. Allocated memory is still 187.7MB. Free memory was 136.2MB in the beginning and 90.4MB in the end (delta: 45.8MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. [2022-01-10 11:54:23,912 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 11:54:23,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.04ms. Allocated memory is still 187.7MB. Free memory was 135.9MB in the beginning and 158.6MB in the end (delta: -22.6MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-01-10 11:54:23,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.13ms. Allocated memory is still 187.7MB. Free memory was 158.6MB in the beginning and 156.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 11:54:23,913 INFO L158 Benchmark]: Boogie Preprocessor took 27.74ms. Allocated memory is still 187.7MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 11:54:23,913 INFO L158 Benchmark]: RCFGBuilder took 449.76ms. Allocated memory is still 187.7MB. Free memory was 154.4MB in the beginning and 136.0MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-01-10 11:54:23,915 INFO L158 Benchmark]: IcfgTransformer took 73.11ms. Allocated memory is still 187.7MB. Free memory was 136.0MB in the beginning and 130.8MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-01-10 11:54:23,915 INFO L158 Benchmark]: TraceAbstraction took 531.49ms. Allocated memory is still 187.7MB. Free memory was 130.2MB in the beginning and 90.4MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-01-10 11:54:23,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 402.04ms. Allocated memory is still 187.7MB. Free memory was 135.9MB in the beginning and 158.6MB in the end (delta: -22.6MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.13ms. Allocated memory is still 187.7MB. Free memory was 158.6MB in the beginning and 156.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.74ms. Allocated memory is still 187.7MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.76ms. Allocated memory is still 187.7MB. Free memory was 154.4MB in the beginning and 136.0MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * IcfgTransformer took 73.11ms. Allocated memory is still 187.7MB. Free memory was 136.0MB in the beginning and 130.8MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * TraceAbstraction took 531.49ms. Allocated memory is still 187.7MB. Free memory was 130.2MB in the beginning and 90.4MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. 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: 1063]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1000] SLL* head = malloc(sizeof(SLL)); [L1001] head->next = ((void*)0) [L1002] head->prev = ((void*)0) [L1003] head->data = 0 [L1005] SLL* x = head; VAL [head={-2:0}, x={-2:0}] [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1019] COND TRUE __VERIFIER_nondet_int() [L1020] x = malloc(sizeof(SLL)) [L1021] x->data = 1 [L1022] x->next = head [L1023] x->prev = ((void*)0) [L1024] head = x VAL [head={-2:0}, x={-2:0}] [L1050] x = head VAL [head={-2:0}, x={-2:0}] [L1053] EXPR x->data VAL [head={-2:0}, x={-2:0}, x->data=-1] [L1053] COND FALSE !(x->data != 1) [L1059] EXPR x->next [L1059] x = x->next [L1060] COND TRUE \read(*x) [L1062] EXPR x->data VAL [head={-2:0}, x={-2:0}, x->data=0] [L1062] COND TRUE x->data != 1 [L1063] reach_error() VAL [head={-2:0}, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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! [2022-01-10 11:54:23,964 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...