./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/bhmr2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/bhmr2007.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 07cb9038cdaf0e413365ff784390031a7ba733892c02a00ed18b47b0bbaf3c4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 06:32:46,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:32:46,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:32:46,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:32:46,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:32:46,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:32:46,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:32:46,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:32:46,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:32:46,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:32:46,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:32:46,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:32:46,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:32:46,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:32:46,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:32:46,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:32:46,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:32:46,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:32:46,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:32:46,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:32:46,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:32:46,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:32:46,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:32:46,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:32:46,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:32:46,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:32:46,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:32:46,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:32:46,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:32:46,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:32:46,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:32:46,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:32:46,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:32:46,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:32:46,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:32:46,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:32:46,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:32:46,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:32:46,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:32:46,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:32:46,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:32:46,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:32:46,982 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:32:46,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:32:46,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:32:46,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:32:46,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:32:46,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:32:46,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:32:46,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:32:46,992 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:32:46,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:32:46,993 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:32:46,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:32:46,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:32:46,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:32:46,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:32:46,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:32:46,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:32:46,994 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:32:46,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:32:46,995 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:32:46,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:32:46,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:32:46,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:32:46,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:32:46,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:32:46,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:32:46,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:32:46,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:32:46,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:32:46,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:32:46,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:32:46,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:32:46,998 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:32:46,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:32:46,998 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:32:46,998 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07cb9038cdaf0e413365ff784390031a7ba733892c02a00ed18b47b0bbaf3c4d [2023-02-17 06:32:47,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:32:47,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:32:47,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:32:47,228 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:32:47,228 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:32:47,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/bhmr2007.i [2023-02-17 06:32:48,361 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:32:48,541 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:32:48,542 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i [2023-02-17 06:32:48,546 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779484a29/c22ba92ced724789a258c165ae5163f2/FLAGc19b0c631 [2023-02-17 06:32:48,560 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779484a29/c22ba92ced724789a258c165ae5163f2 [2023-02-17 06:32:48,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:32:48,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:32:48,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:32:48,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:32:48,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:32:48,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310aa624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48, skipping insertion in model container [2023-02-17 06:32:48,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:32:48,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:32:48,723 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2023-02-17 06:32:48,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:32:48,752 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:32:48,765 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2023-02-17 06:32:48,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:32:48,789 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:32:48,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48 WrapperNode [2023-02-17 06:32:48,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:32:48,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:32:48,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:32:48,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:32:48,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,818 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2023-02-17 06:32:48,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:32:48,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:32:48,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:32:48,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:32:48,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:32:48,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:32:48,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:32:48,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:32:48,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (1/1) ... [2023-02-17 06:32:48,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:32:48,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:32:48,882 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) [2023-02-17 06:32:48,910 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 [2023-02-17 06:32:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:32:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:32:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:32:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:32:48,971 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:32:48,976 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:32:49,120 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:32:49,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:32:49,125 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 06:32:49,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:32:49 BoogieIcfgContainer [2023-02-17 06:32:49,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:32:49,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:32:49,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:32:49,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:32:49,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:32:48" (1/3) ... [2023-02-17 06:32:49,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7580af03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:32:49, skipping insertion in model container [2023-02-17 06:32:49,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:32:48" (2/3) ... [2023-02-17 06:32:49,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7580af03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:32:49, skipping insertion in model container [2023-02-17 06:32:49,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:32:49" (3/3) ... [2023-02-17 06:32:49,148 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2023-02-17 06:32:49,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:32:49,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 06:32:49,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:32:49,247 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23bf4e11, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:32:49,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 06:32:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2023-02-17 06:32:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 06:32:49,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:32:49,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:32:49,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:32:49,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:32:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2023-02-17 06:32:49,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:32:49,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17818197] [2023-02-17 06:32:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:32:49,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:32:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:32:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:32:49,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:32:49,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17818197] [2023-02-17 06:32:49,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17818197] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:32:49,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:32:49,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 06:32:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198471577] [2023-02-17 06:32:49,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:32:49,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 06:32:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:32:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 06:32:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:32:49,554 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-02-17 06:32:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:32:49,568 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-02-17 06:32:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 06:32:49,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-02-17 06:32:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:32:49,578 INFO L225 Difference]: With dead ends: 22 [2023-02-17 06:32:49,578 INFO L226 Difference]: Without dead ends: 10 [2023-02-17 06:32:49,581 INFO L412 NwaCegarLoop]: 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 [2023-02-17 06:32:49,585 INFO L413 NwaCegarLoop]: 16 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, 16 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 [2023-02-17 06:32:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:32:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-17 06:32:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-17 06:32:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2023-02-17 06:32:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 06:32:49,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2023-02-17 06:32:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:32:49,624 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 06:32:49,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-02-17 06:32:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 06:32:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 06:32:49,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:32:49,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:32:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 06:32:49,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:32:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:32:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1806977267, now seen corresponding path program 1 times [2023-02-17 06:32:49,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:32:49,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233554519] [2023-02-17 06:32:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:32:49,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:32:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:32:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:32:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:32:49,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233554519] [2023-02-17 06:32:49,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233554519] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:32:49,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:32:49,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 06:32:49,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848049617] [2023-02-17 06:32:49,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:32:49,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 06:32:49,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:32:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 06:32:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-17 06:32:49,913 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-02-17 06:32:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:32:49,991 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-17 06:32:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 06:32:49,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2023-02-17 06:32:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:32:49,993 INFO L225 Difference]: With dead ends: 16 [2023-02-17 06:32:49,994 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 06:32:49,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:32:49,996 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:32:49,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:32:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 06:32:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-02-17 06:32:50,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2023-02-17 06:32:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-02-17 06:32:50,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2023-02-17 06:32:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:32:50,006 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-02-17 06:32:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-02-17 06:32:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-02-17 06:32:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 06:32:50,009 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:32:50,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:32:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 06:32:50,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:32:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:32:50,013 INFO L85 PathProgramCache]: Analyzing trace with hash 78673311, now seen corresponding path program 1 times [2023-02-17 06:32:50,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:32:50,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721209225] [2023-02-17 06:32:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:32:50,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:32:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:32:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:32:50,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:32:50,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721209225] [2023-02-17 06:32:50,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721209225] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:32:50,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869729445] [2023-02-17 06:32:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:32:50,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:32:50,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:32:50,217 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) [2023-02-17 06:32:50,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 06:32:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:32:50,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-17 06:32:50,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:32:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:32:50,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:32:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:32:50,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869729445] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:32:50,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:32:50,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-02-17 06:32:50,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775188424] [2023-02-17 06:32:50,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:32:50,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 06:32:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:32:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 06:32:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-02-17 06:32:50,606 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-02-17 06:32:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:32:50,767 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-02-17 06:32:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 06:32:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 [2023-02-17 06:32:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:32:50,768 INFO L225 Difference]: With dead ends: 26 [2023-02-17 06:32:50,768 INFO L226 Difference]: Without dead ends: 20 [2023-02-17 06:32:50,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-02-17 06:32:50,770 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:32:50,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:32:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-17 06:32:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2023-02-17 06:32:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2023-02-17 06:32:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-02-17 06:32:50,775 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2023-02-17 06:32:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:32:50,775 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-02-17 06:32:50,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-02-17 06:32:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-02-17 06:32:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 06:32:50,776 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:32:50,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:32:50,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 06:32:50,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:32:50,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:32:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:32:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 923522933, now seen corresponding path program 1 times [2023-02-17 06:32:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:32:50,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876758201] [2023-02-17 06:32:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:32:50,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:32:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:32:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:32:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:32:51,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876758201] [2023-02-17 06:32:51,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876758201] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:32:51,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078829859] [2023-02-17 06:32:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:32:51,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:32:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:32:51,144 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) [2023-02-17 06:32:51,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 06:32:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:32:51,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 06:32:51,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:32:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:32:51,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:32:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 06:32:51,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078829859] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:32:51,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:32:51,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 21 [2023-02-17 06:32:51,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409531225] [2023-02-17 06:32:51,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:32:51,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-17 06:32:51,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:32:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-17 06:32:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-02-17 06:32:51,363 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 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) [2023-02-17 06:32:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:32:51,613 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2023-02-17 06:32:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-17 06:32:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 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 13 [2023-02-17 06:32:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:32:51,614 INFO L225 Difference]: With dead ends: 25 [2023-02-17 06:32:51,614 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 06:32:51,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2023-02-17 06:32:51,615 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:32:51,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:32:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 06:32:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 06:32:51,617 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) [2023-02-17 06:32:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 06:32:51,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-02-17 06:32:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:32:51,618 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 06:32:51,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 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) [2023-02-17 06:32:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 06:32:51,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 06:32:51,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 06:32:51,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 06:32:51,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 06:32:51,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 06:32:51,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 06:32:51,837 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 35) no Hoare annotation was computed. [2023-02-17 06:32:51,837 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-02-17 06:32:51,837 INFO L899 garLoopResultBuilder]: For program point L29-2(lines 29 35) no Hoare annotation was computed. [2023-02-17 06:32:51,837 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-02-17 06:32:51,837 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 06:32:51,837 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 24 40) the Hoare annotation is: true [2023-02-17 06:32:51,838 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 06:32:51,838 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 06:32:51,838 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse9 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse11 (* (- 1) |ULTIMATE.start_main_~b~0#1|)) (.cse10 (* (- 1) |ULTIMATE.start_main_~a~0#1|))) (let ((.cse13 (* 3 |ULTIMATE.start_main_~i~0#1|)) (.cse12 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse17 (<= (+ .cse9 .cse11 .cse10 1) 0))) (let ((.cse15 (not .cse17)) (.cse16 (<= (+ .cse9 .cse11 .cse10) 0)) (.cse2 (<= .cse13 .cse12))) (let ((.cse8 (or .cse16 .cse2 .cse17)) (.cse7 (or .cse15 (<= .cse12 .cse9))) (.cse14 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 (or .cse16 .cse17 (<= .cse13 .cse14))) (.cse6 (or (and .cse7 .cse8) (and .cse7 (or (<= .cse9 .cse12) .cse16 .cse17)) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|))) (.cse1 (or (<= .cse14 .cse9) .cse15)) (.cse5 (+ 1 0)) (.cse3 (<= .cse12 .cse13))) (or (and .cse0 .cse1 .cse2 .cse3) (let ((.cse4 (+ (* |ULTIMATE.start_main_~i~0#1| 3) 3))) (and (or (< .cse4 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| 3)) (< .cse4 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| 4))) (= (+ |ULTIMATE.start_main_~a~0#1| (- 1)) 0) .cse0 (= (+ |ULTIMATE.start_main_~b~0#1| (- 2)) 0) .cse1 .cse2 (< (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| 2) .cse4) .cse3 (<= 0 (+ |ULTIMATE.start_main_~n~0#1| (- 1))) (<= |ULTIMATE.start_main_~i~0#1| .cse5))) (and .cse0 .cse6 .cse1 .cse2 .cse3) (and .cse7 .cse8 .cse0 (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 (or (not (<= (+ .cse9 .cse10 .cse11 1) 0)) (<= 0 |ULTIMATE.start_main_~n~0#1|)) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| .cse5) (= (+ |ULTIMATE.start_main_~a~0#1| (- 2)) 0) .cse6 .cse1 (= (+ |ULTIMATE.start_main_~i~0#1| (- 1)) 0)) (and (= |ULTIMATE.start_main_~b~0#1| (+ 2 .cse5)) (= |ULTIMATE.start_main_~a~0#1| (+ 1 2)) .cse2 .cse3 (<= |ULTIMATE.start_main_~i~0#1| (+ 1 1)) (< 1 |ULTIMATE.start_main_~n~0#1|)))))))) [2023-02-17 06:32:51,839 INFO L899 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2023-02-17 06:32:51,839 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-02-17 06:32:51,839 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-02-17 06:32:51,839 INFO L902 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2023-02-17 06:32:51,841 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-02-17 06:32:51,843 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 06:32:51,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 06:32:51 BoogieIcfgContainer [2023-02-17 06:32:51,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 06:32:51,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 06:32:51,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 06:32:51,879 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 06:32:51,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:32:49" (3/4) ... [2023-02-17 06:32:51,882 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 06:32:51,891 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-17 06:32:51,891 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-17 06:32:51,891 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 06:32:51,891 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 06:32:51,919 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 06:32:51,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 06:32:51,920 INFO L158 Benchmark]: Toolchain (without parser) took 3356.14ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 73.8MB in the beginning and 101.6MB in the end (delta: -27.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-02-17 06:32:51,920 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 88.1MB in the beginning and 88.0MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:32:51,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.87ms. Allocated memory is still 119.5MB. Free memory was 73.8MB in the beginning and 63.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 06:32:51,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.66ms. Allocated memory is still 119.5MB. Free memory was 63.4MB in the beginning and 62.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:32:51,921 INFO L158 Benchmark]: Boogie Preprocessor took 28.72ms. Allocated memory is still 119.5MB. Free memory was 62.2MB in the beginning and 60.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:32:51,921 INFO L158 Benchmark]: RCFGBuilder took 277.29ms. Allocated memory is still 119.5MB. Free memory was 60.9MB in the beginning and 52.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 06:32:51,921 INFO L158 Benchmark]: TraceAbstraction took 2749.54ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 51.3MB in the beginning and 104.7MB in the end (delta: -53.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:32:51,921 INFO L158 Benchmark]: Witness Printer took 40.89ms. Allocated memory is still 155.2MB. Free memory was 104.7MB in the beginning and 101.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:32:51,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 88.1MB in the beginning and 88.0MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.87ms. Allocated memory is still 119.5MB. Free memory was 73.8MB in the beginning and 63.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.66ms. Allocated memory is still 119.5MB. Free memory was 63.4MB in the beginning and 62.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.72ms. Allocated memory is still 119.5MB. Free memory was 62.2MB in the beginning and 60.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 277.29ms. Allocated memory is still 119.5MB. Free memory was 60.9MB in the beginning and 52.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2749.54ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 51.3MB in the beginning and 104.7MB in the end (delta: -53.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 40.89ms. Allocated memory is still 155.2MB. Free memory was 104.7MB in the beginning and 101.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 19]: 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 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 279 IncrementalHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 30 mSDtfsCounter, 279 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 43, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 740 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 1499 SizeOfPredicates, 14 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/18 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((3 * n + -1 * b + -1 * a <= 0 || 3 * n + -1 * b + -1 * a + 1 <= 0) || 3 * i <= b + a) && (b + a <= 3 * n || !(3 * n + -1 * b + -1 * a + 1 <= 0))) && 3 * i <= a + b) && a + b <= 3 * i) || ((((((((((i * 3 + 3 < a + b + 3 || i * 3 + 3 < a + b + 4) && a + -1 == 0) && ((3 * n + -1 * b + -1 * a <= 0 || 3 * n + -1 * b + -1 * a + 1 <= 0) || 3 * i <= b + a)) && b + -2 == 0) && (b + a <= 3 * n || !(3 * n + -1 * b + -1 * a + 1 <= 0))) && 3 * i <= a + b) && a + b + 2 < i * 3 + 3) && a + b <= 3 * i) && 0 <= n + -1) && i <= 1 + 0)) || ((((((3 * n + -1 * b + -1 * a <= 0 || 3 * n + -1 * b + -1 * a + 1 <= 0) || 3 * i <= b + a) && ((((!(3 * n + -1 * b + -1 * a + 1 <= 0) || a + b <= 3 * n) && ((3 * n + -1 * b + -1 * a <= 0 || 3 * i <= a + b) || 3 * n + -1 * b + -1 * a + 1 <= 0)) || ((!(3 * n + -1 * b + -1 * a + 1 <= 0) || a + b <= 3 * n) && ((3 * n <= a + b || 3 * n + -1 * b + -1 * a <= 0) || 3 * n + -1 * b + -1 * a + 1 <= 0))) || i < n)) && (b + a <= 3 * n || !(3 * n + -1 * b + -1 * a + 1 <= 0))) && 3 * i <= a + b) && a + b <= 3 * i)) || ((((((((!(3 * n + -1 * b + -1 * a + 1 <= 0) || a + b <= 3 * n) && ((3 * n + -1 * b + -1 * a <= 0 || 3 * i <= a + b) || 3 * n + -1 * b + -1 * a + 1 <= 0)) && ((3 * n + -1 * b + -1 * a <= 0 || 3 * n + -1 * b + -1 * a + 1 <= 0) || 3 * i <= b + a)) && a == 0) && (b + a <= 3 * n || !(3 * n + -1 * b + -1 * a + 1 <= 0))) && (!(3 * n + -1 * a + -1 * b + 1 <= 0) || 0 <= n)) && i == 0) && b == 0)) || (((((((3 * n + -1 * b + -1 * a <= 0 || 3 * n + -1 * b + -1 * a + 1 <= 0) || 3 * i <= b + a) && b == 1 + 0) && a + -2 == 0) && ((((!(3 * n + -1 * b + -1 * a + 1 <= 0) || a + b <= 3 * n) && ((3 * n + -1 * b + -1 * a <= 0 || 3 * i <= a + b) || 3 * n + -1 * b + -1 * a + 1 <= 0)) || ((!(3 * n + -1 * b + -1 * a + 1 <= 0) || a + b <= 3 * n) && ((3 * n <= a + b || 3 * n + -1 * b + -1 * a <= 0) || 3 * n + -1 * b + -1 * a + 1 <= 0))) || i < n)) && (b + a <= 3 * n || !(3 * n + -1 * b + -1 * a + 1 <= 0))) && i + -1 == 0)) || (((((b == 2 + (1 + 0) && a == 1 + 2) && 3 * i <= a + b) && a + b <= 3 * i) && i <= 1 + 1) && 1 < n) RESULT: Ultimate proved your program to be correct! [2023-02-17 06:32:51,947 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE