/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/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:29:17,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:29:17,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:29:17,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:29:17,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:29:17,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:29:17,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:29:17,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:29:17,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:29:17,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:29:17,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:29:17,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:29:17,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:29:17,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:29:17,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:29:17,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:29:17,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:29:17,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:29:17,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:29:17,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:29:17,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:29:17,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:29:17,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:29:17,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:29:17,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:29:17,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:29:17,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:29:17,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:29:17,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:29:17,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:29:17,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:29:17,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:29:17,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:29:17,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:29:17,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:29:17,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:29:17,979 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 12:29:17,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:29:17,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:29:17,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:29:17,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:29:17,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:29:17,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:29:17,999 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:29:17,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:29:17,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:29:17,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:29:17,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:29:18,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:29:18,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:29:18,000 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:29:18,000 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:29:18,000 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:29:18,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:29:18,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:29:18,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:29:18,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:29:18,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:29:18,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:29:18,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:29:18,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:29:18,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:29:18,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:29:18,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:29:18,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:29:18,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:29:18,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:29:18,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:29:18,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:29:18,003 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:29:18,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:29:18,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:29:18,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:29:18,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:29:18,195 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:29:18,196 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:29:18,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2022-01-10 12:29:18,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b39ac62/6462a44050b14b51bb5e48e675367899/FLAGa9af1badf [2022-01-10 12:29:18,635 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:29:18,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2022-01-10 12:29:18,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b39ac62/6462a44050b14b51bb5e48e675367899/FLAGa9af1badf [2022-01-10 12:29:18,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b39ac62/6462a44050b14b51bb5e48e675367899 [2022-01-10 12:29:18,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:29:18,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:29:18,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:29:18,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:29:18,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:29:18,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8c4d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18, skipping insertion in model container [2022-01-10 12:29:18,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:29:18,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:29:18,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c[1126,1139] [2022-01-10 12:29:18,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:29:18,886 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:29:18,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c[1126,1139] [2022-01-10 12:29:18,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:29:18,907 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:29:18,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18 WrapperNode [2022-01-10 12:29:18,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:29:18,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:29:18,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:29:18,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:29:18,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,939 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-01-10 12:29:18,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:29:18,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:29:18,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:29:18,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:29:18,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:29:18,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:29:18,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:29:18,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:29:18,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (1/1) ... [2022-01-10 12:29:18,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:29:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:18,980 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 12:29:19,007 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 12:29:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:29:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:29:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:29:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:29:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2022-01-10 12:29:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2022-01-10 12:29:19,075 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:29:19,076 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:29:19,190 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:29:19,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:29:19,195 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 12:29:19,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:19 BoogieIcfgContainer [2022-01-10 12:29:19,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:29:19,197 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:29:19,197 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:29:19,198 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:29:19,201 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:19" (1/1) ... [2022-01-10 12:29:19,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:29:19 BasicIcfg [2022-01-10 12:29:19,291 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:29:19,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:29:19,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:29:19,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:29:19,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:29:18" (1/4) ... [2022-01-10 12:29:19,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1454d917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:19, skipping insertion in model container [2022-01-10 12:29:19,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:18" (2/4) ... [2022-01-10 12:29:19,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1454d917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:19, skipping insertion in model container [2022-01-10 12:29:19,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:19" (3/4) ... [2022-01-10 12:29:19,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1454d917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:29:19, skipping insertion in model container [2022-01-10 12:29:19,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:29:19" (4/4) ... [2022-01-10 12:29:19,302 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.cTransformedIcfg [2022-01-10 12:29:19,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:29:19,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:29:19,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:29:19,370 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 12:29:19,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:29:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 12:29:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 12:29:19,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:19,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:19,392 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2034276413, now seen corresponding path program 1 times [2022-01-10 12:29:19,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993242856] [2022-01-10 12:29:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:19,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 12:29:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:19,831 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 12:29:19,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:19,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993242856] [2022-01-10 12:29:19,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993242856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:19,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:19,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:29:19,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505696665] [2022-01-10 12:29:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:19,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:29:19,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:29:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:29:19,873 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:29:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:20,011 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-01-10 12:29:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:29:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-10 12:29:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:20,023 INFO L225 Difference]: With dead ends: 37 [2022-01-10 12:29:20,023 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 12:29:20,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:29:20,029 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:20,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 65 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:29:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 12:29:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 12:29:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 12:29:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-01-10 12:29:20,057 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2022-01-10 12:29:20,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:20,058 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-01-10 12:29:20,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:29:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-01-10 12:29:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 12:29:20,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:20,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:20,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:29:20,060 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash -154351527, now seen corresponding path program 1 times [2022-01-10 12:29:20,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:20,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944935797] [2022-01-10 12:29:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:20,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 12:29:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:20,230 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 12:29:20,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:20,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944935797] [2022-01-10 12:29:20,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944935797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:20,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:20,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:29:20,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275959857] [2022-01-10 12:29:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:20,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:29:20,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:29:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:29:20,235 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:29:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:20,260 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-01-10 12:29:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:29:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-10 12:29:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:20,262 INFO L225 Difference]: With dead ends: 31 [2022-01-10 12:29:20,262 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 12:29:20,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:29:20,267 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:20,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 46 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 12:29:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-01-10 12:29:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 12:29:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-10 12:29:20,282 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2022-01-10 12:29:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:20,284 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-10 12:29:20,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:29:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-10 12:29:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 12:29:20,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:20,291 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:20,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:29:20,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1289354868, now seen corresponding path program 1 times [2022-01-10 12:29:20,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:20,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788601375] [2022-01-10 12:29:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:20,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 12:29:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 12:29:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:29:20,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:20,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788601375] [2022-01-10 12:29:20,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788601375] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:20,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130611533] [2022-01-10 12:29:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:20,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:20,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:29:20,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:29:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:20,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-10 12:29:20,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:29:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:29:21,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:29:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:29:22,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130611533] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:29:22,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:29:22,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-01-10 12:29:22,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29810841] [2022-01-10 12:29:22,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:29:22,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 12:29:22,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 12:29:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:29:22,562 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 18 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-10 12:29:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:23,192 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-01-10 12:29:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:29:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 18 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2022-01-10 12:29:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:23,194 INFO L225 Difference]: With dead ends: 39 [2022-01-10 12:29:23,194 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 12:29:23,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-01-10 12:29:23,196 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:23,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 100 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:29:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 12:29:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 12:29:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 12:29:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-01-10 12:29:23,202 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2022-01-10 12:29:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:23,203 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-01-10 12:29:23,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 18 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-10 12:29:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-01-10 12:29:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 12:29:23,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:23,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:23,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:29:23,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:23,423 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash -717155031, now seen corresponding path program 1 times [2022-01-10 12:29:23,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:23,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487018135] [2022-01-10 12:29:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:23,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 12:29:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 12:29:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:29:23,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:23,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487018135] [2022-01-10 12:29:23,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487018135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:23,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683766906] [2022-01-10 12:29:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:23,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:23,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:29:23,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:29:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:23,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 12:29:23,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:29:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:29:23,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:29:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:29:23,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683766906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:29:23,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:29:23,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-10 12:29:23,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422792271] [2022-01-10 12:29:23,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:29:23,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:29:23,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:29:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:29:23,781 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 6 states have (on average 4.166666666666667) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 12:29:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:23,839 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-01-10 12:29:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:29:23,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 4.166666666666667) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2022-01-10 12:29:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:23,841 INFO L225 Difference]: With dead ends: 33 [2022-01-10 12:29:23,841 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 12:29:23,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:29:23,842 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:23,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 12:29:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-10 12:29:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 12:29:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-01-10 12:29:23,850 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 20 [2022-01-10 12:29:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:23,850 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-01-10 12:29:23,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 4.166666666666667) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 12:29:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-01-10 12:29:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 12:29:23,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:23,857 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:23,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 12:29:24,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 12:29:24,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:24,077 INFO L85 PathProgramCache]: Analyzing trace with hash 125887496, now seen corresponding path program 1 times [2022-01-10 12:29:24,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:24,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958009342] [2022-01-10 12:29:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:24,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 12:29:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 12:29:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 12:29:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:29:24,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:24,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958009342] [2022-01-10 12:29:24,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958009342] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:24,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038946726] [2022-01-10 12:29:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:24,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:24,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:24,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:29:24,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 12:29:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:24,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 12:29:24,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:29:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:29:24,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:29:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:29:25,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038946726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:29:25,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:29:25,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 11] total 24 [2022-01-10 12:29:25,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216828701] [2022-01-10 12:29:25,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:29:25,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 12:29:25,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:25,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 12:29:25,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-01-10 12:29:25,797 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 24 states, 20 states have (on average 2.5) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-10 12:29:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:26,034 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-01-10 12:29:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:29:26,035 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.5) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 27 [2022-01-10 12:29:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:26,035 INFO L225 Difference]: With dead ends: 35 [2022-01-10 12:29:26,035 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:29:26,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2022-01-10 12:29:26,037 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:26,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 82 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:29:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:29:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:29:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:29:26,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-01-10 12:29:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:26,039 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:29:26,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.5) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-10 12:29:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:29:26,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:29:26,041 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 12:29:26,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 12:29:26,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:26,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:29:26,326 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 12:29:26,326 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 12:29:26,326 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2022-01-10 12:29:26,327 INFO L861 garLoopResultBuilder]: At program point L28(lines 28 47) the Hoare annotation is: true [2022-01-10 12:29:26,327 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2022-01-10 12:29:26,327 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 12:29:26,327 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (let ((.cse1 (* 2 (mod |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 2147483648))) (.cse0 (* 4294967296 (div |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 2147483648)))) (and (<= .cse0 |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|) (<= |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| .cse1) (<= .cse1 (+ |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 1073741823)) (<= |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (+ .cse0 1073741823)))) [2022-01-10 12:29:26,327 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 12:29:26,327 INFO L858 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2022-01-10 12:29:26,327 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2022-01-10 12:29:26,327 INFO L858 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2022-01-10 12:29:26,327 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L861 garLoopResultBuilder]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2022-01-10 12:29:26,328 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L858 garLoopResultBuilder]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L858 garLoopResultBuilder]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L854 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (<= addition_addition_~mInt 4294967295) (<= addition_addition_~mInt |addition_addition_#in~mInt|) (<= (div addition_addition_~nInt 2147483648) 0) (< 0 addition_addition_~nInt) (<= |addition_addition_#in~mInt| addition_addition_~mInt) (< 0 (+ (div (+ addition_addition_~mInt 1) 4294967296) 1)) (= |addition_addition_#in~nInt| addition_addition_~nInt)) [2022-01-10 12:29:26,328 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L858 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-01-10 12:29:26,328 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (<= addition_addition_~mInt 4294967295) (<= addition_addition_~nInt 4294967295) (<= addition_addition_~mInt |addition_addition_#in~mInt|) (<= |addition_addition_#in~mInt| addition_addition_~mInt) (< 0 (+ (div (+ addition_addition_~mInt 1) 4294967296) 1)) (= |addition_addition_#in~nInt| addition_addition_~nInt) (< 0 (div addition_addition_~nInt 2147483648))) [2022-01-10 12:29:26,331 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-10 12:29:26,332 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 12:29:26,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:29:26 BasicIcfg [2022-01-10 12:29:26,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 12:29:26,339 INFO L158 Benchmark]: Toolchain (without parser) took 7666.85ms. Allocated memory was 185.6MB in the beginning and 293.6MB in the end (delta: 108.0MB). Free memory was 127.5MB in the beginning and 211.0MB in the end (delta: -83.5MB). Peak memory consumption was 24.9MB. Max. memory is 8.0GB. [2022-01-10 12:29:26,340 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 185.6MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 12:29:26,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.84ms. Allocated memory was 185.6MB in the beginning and 242.2MB in the end (delta: 56.6MB). Free memory was 127.2MB in the beginning and 213.8MB in the end (delta: -86.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 12:29:26,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.34ms. Allocated memory is still 242.2MB. Free memory was 213.8MB in the beginning and 212.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 12:29:26,340 INFO L158 Benchmark]: Boogie Preprocessor took 13.13ms. Allocated memory is still 242.2MB. Free memory was 212.7MB in the beginning and 211.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 12:29:26,340 INFO L158 Benchmark]: RCFGBuilder took 243.08ms. Allocated memory is still 242.2MB. Free memory was 211.7MB in the beginning and 201.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 12:29:26,341 INFO L158 Benchmark]: IcfgTransformer took 94.00ms. Allocated memory is still 242.2MB. Free memory was 201.2MB in the beginning and 197.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-10 12:29:26,341 INFO L158 Benchmark]: TraceAbstraction took 7041.70ms. Allocated memory was 242.2MB in the beginning and 293.6MB in the end (delta: 51.4MB). Free memory was 196.5MB in the beginning and 211.0MB in the end (delta: -14.5MB). Peak memory consumption was 37.9MB. Max. memory is 8.0GB. [2022-01-10 12:29:26,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 185.6MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.84ms. Allocated memory was 185.6MB in the beginning and 242.2MB in the end (delta: 56.6MB). Free memory was 127.2MB in the beginning and 213.8MB in the end (delta: -86.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.34ms. Allocated memory is still 242.2MB. Free memory was 213.8MB in the beginning and 212.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.13ms. Allocated memory is still 242.2MB. Free memory was 212.7MB in the beginning and 211.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 243.08ms. Allocated memory is still 242.2MB. Free memory was 211.7MB in the beginning and 201.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 94.00ms. Allocated memory is still 242.2MB. Free memory was 201.2MB in the beginning and 197.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 7041.70ms. Allocated memory was 242.2MB in the beginning and 293.6MB in the end (delta: 51.4MB). Free memory was 196.5MB in the beginning and 211.0MB in the end (delta: -14.5MB). Peak memory consumption was 37.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 324 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 247 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 493 IncrementalHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 77 mSDtfsCounter, 493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 114 SyntacticMatches, 9 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 14 NumberOfFragments, 95 HoareAnnotationTreeSize, 11 FomulaSimplifications, 81 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 2357 SizeOfPredicates, 13 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 34/63 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-10 12:29:26,371 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...