./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bAnd5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/array-crafted/bAnd5.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 d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 09:47:15,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 09:47:15,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 09:47:16,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 09:47:16,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 09:47:16,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 09:47:16,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 09:47:16,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 09:47:16,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 09:47:16,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 09:47:16,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 09:47:16,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 09:47:16,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 09:47:16,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 09:47:16,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 09:47:16,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 09:47:16,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 09:47:16,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 09:47:16,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 09:47:16,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 09:47:16,014 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 09:47:16,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 09:47:16,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 09:47:16,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 09:47:16,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 09:47:16,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 09:47:16,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 09:47:16,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 09:47:16,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 09:47:16,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 09:47:16,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 09:47:16,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 09:47:16,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 09:47:16,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 09:47:16,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 09:47:16,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 09:47:16,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 09:47:16,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 09:47:16,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 09:47:16,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 09:47:16,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 09:47:16,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 09:47:16,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 09:47:16,039 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 09:47:16,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 09:47:16,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 09:47:16,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 09:47:16,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 09:47:16,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 09:47:16,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 09:47:16,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 09:47:16,042 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 09:47:16,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 09:47:16,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 09:47:16,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 09:47:16,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 09:47:16,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 09:47:16,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 09:47:16,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 09:47:16,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 09:47:16,044 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 09:47:16,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 09:47:16,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 09:47:16,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 09:47:16,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 09:47:16,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 09:47:16,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 09:47:16,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:47:16,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 09:47:16,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 09:47:16,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 09:47:16,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 09:47:16,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 09:47:16,046 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 09:47:16,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 09:47:16,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 09:47:16,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 [2022-07-19 09:47:16,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 09:47:16,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 09:47:16,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 09:47:16,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 09:47:16,219 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 09:47:16,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-19 09:47:16,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e975fbf/3e1e755d39b24241b93c8821fb1f2ccd/FLAGbd59b68bb [2022-07-19 09:47:16,657 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 09:47:16,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i [2022-07-19 09:47:16,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e975fbf/3e1e755d39b24241b93c8821fb1f2ccd/FLAGbd59b68bb [2022-07-19 09:47:16,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e975fbf/3e1e755d39b24241b93c8821fb1f2ccd [2022-07-19 09:47:16,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 09:47:16,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 09:47:16,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 09:47:16,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 09:47:16,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 09:47:16,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bdd51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16, skipping insertion in model container [2022-07-19 09:47:16,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 09:47:16,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 09:47:16,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2022-07-19 09:47:16,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:47:16,868 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 09:47:16,900 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2022-07-19 09:47:16,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:47:16,908 INFO L208 MainTranslator]: Completed translation [2022-07-19 09:47:16,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16 WrapperNode [2022-07-19 09:47:16,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 09:47:16,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 09:47:16,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 09:47:16,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 09:47:16,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,942 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2022-07-19 09:47:16,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 09:47:16,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 09:47:16,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 09:47:16,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 09:47:16,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 09:47:16,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 09:47:16,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 09:47:16,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 09:47:16,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (1/1) ... [2022-07-19 09:47:16,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:47:16,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:17,001 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) [2022-07-19 09:47:17,018 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 [2022-07-19 09:47:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 09:47:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 09:47:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 09:47:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 09:47:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-07-19 09:47:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-07-19 09:47:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 09:47:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 09:47:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 09:47:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 09:47:17,098 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 09:47:17,099 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 09:47:17,274 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 09:47:17,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 09:47:17,291 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 09:47:17,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:47:17 BoogieIcfgContainer [2022-07-19 09:47:17,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 09:47:17,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 09:47:17,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 09:47:17,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 09:47:17,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:47:16" (1/3) ... [2022-07-19 09:47:17,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58493b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:47:17, skipping insertion in model container [2022-07-19 09:47:17,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:16" (2/3) ... [2022-07-19 09:47:17,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58493b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:47:17, skipping insertion in model container [2022-07-19 09:47:17,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:47:17" (3/3) ... [2022-07-19 09:47:17,315 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2022-07-19 09:47:17,324 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 09:47:17,324 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 09:47:17,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 09:47:17,368 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2540ef3e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2666a7f1 [2022-07-19 09:47:17,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 09:47:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 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) [2022-07-19 09:47:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 09:47:17,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:17,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:17,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -469479236, now seen corresponding path program 1 times [2022-07-19 09:47:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:17,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385640480] [2022-07-19 09:47:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:17,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 09:47:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 09:47:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 09:47:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 09:47:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:17,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385640480] [2022-07-19 09:47:17,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385640480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:47:17,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 09:47:17,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 09:47:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417484912] [2022-07-19 09:47:17,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:47:17,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 09:47:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 09:47:17,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 09:47:17,561 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 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 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 09:47:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:17,615 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2022-07-19 09:47:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 09:47:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-07-19 09:47:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:17,621 INFO L225 Difference]: With dead ends: 63 [2022-07-19 09:47:17,621 INFO L226 Difference]: Without dead ends: 30 [2022-07-19 09:47:17,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 09:47:17,628 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:17,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 87 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:47:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-19 09:47:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-07-19 09:47:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2022-07-19 09:47:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-07-19 09:47:17,652 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 29 [2022-07-19 09:47:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:17,653 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-07-19 09:47:17,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 09:47:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-07-19 09:47:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-19 09:47:17,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:17,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:17,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 09:47:17,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:17,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1932942338, now seen corresponding path program 1 times [2022-07-19 09:47:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:17,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790538126] [2022-07-19 09:47:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 09:47:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 09:47:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 09:47:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 09:47:17,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:17,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790538126] [2022-07-19 09:47:17,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790538126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:17,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827273643] [2022-07-19 09:47:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:17,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:17,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:17,731 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) [2022-07-19 09:47:17,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 09:47:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:17,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 09:47:17,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 09:47:17,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:47:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 09:47:17,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827273643] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:47:17,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:47:17,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2022-07-19 09:47:17,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335115999] [2022-07-19 09:47:17,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:47:17,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 09:47:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 09:47:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-19 09:47:17,928 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 09:47:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:18,035 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2022-07-19 09:47:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 09:47:18,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 31 [2022-07-19 09:47:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:18,037 INFO L225 Difference]: With dead ends: 62 [2022-07-19 09:47:18,037 INFO L226 Difference]: Without dead ends: 39 [2022-07-19 09:47:18,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-19 09:47:18,038 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 69 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:18,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 128 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:47:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-19 09:47:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-19 09:47:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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) [2022-07-19 09:47:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-07-19 09:47:18,044 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 31 [2022-07-19 09:47:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:18,044 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-07-19 09:47:18,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 09:47:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-07-19 09:47:18,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 09:47:18,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:18,045 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:18,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 09:47:18,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:18,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:18,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1452282271, now seen corresponding path program 1 times [2022-07-19 09:47:18,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:18,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162815279] [2022-07-19 09:47:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:18,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 09:47:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 09:47:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:18,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 09:47:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 09:47:18,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:18,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162815279] [2022-07-19 09:47:18,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162815279] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:18,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676933413] [2022-07-19 09:47:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:18,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:18,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:18,424 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) [2022-07-19 09:47:18,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 09:47:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:18,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 09:47:18,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 09:47:18,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 09:47:18,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676933413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:47:18,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 09:47:18,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-07-19 09:47:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115218528] [2022-07-19 09:47:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:47:18,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 09:47:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 09:47:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 09:47:18,535 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:47:18,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:18,573 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-07-19 09:47:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 09:47:18,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-07-19 09:47:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:18,576 INFO L225 Difference]: With dead ends: 52 [2022-07-19 09:47:18,577 INFO L226 Difference]: Without dead ends: 34 [2022-07-19 09:47:18,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 09:47:18,581 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:18,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 44 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:47:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-19 09:47:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-19 09:47:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 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) [2022-07-19 09:47:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-07-19 09:47:18,590 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 45 [2022-07-19 09:47:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:18,591 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-07-19 09:47:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:47:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-07-19 09:47:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-19 09:47:18,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:18,592 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:18,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 09:47:18,792 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,SelfDestructingSolverStorable2 [2022-07-19 09:47:18,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:18,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:18,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1430162787, now seen corresponding path program 1 times [2022-07-19 09:47:18,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:18,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9837836] [2022-07-19 09:47:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 09:47:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:19,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 09:47:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 09:47:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 09:47:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:19,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9837836] [2022-07-19 09:47:19,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9837836] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:19,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388320841] [2022-07-19 09:47:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:19,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:19,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:19,064 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) [2022-07-19 09:47:19,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 09:47:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:19,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 09:47:19,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 09:47:19,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:47:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 09:47:19,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388320841] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:47:19,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:47:19,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-07-19 09:47:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923412213] [2022-07-19 09:47:19,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:47:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 09:47:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 09:47:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 09:47:19,451 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 09:47:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:19,535 INFO L93 Difference]: Finished difference Result 88 states and 116 transitions. [2022-07-19 09:47:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 09:47:19,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-07-19 09:47:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:19,537 INFO L225 Difference]: With dead ends: 88 [2022-07-19 09:47:19,538 INFO L226 Difference]: Without dead ends: 62 [2022-07-19 09:47:19,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-19 09:47:19,539 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 43 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:19,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 306 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:47:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-19 09:47:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-07-19 09:47:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-19 09:47:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-07-19 09:47:19,546 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 47 [2022-07-19 09:47:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:19,546 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-07-19 09:47:19,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 09:47:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-07-19 09:47:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-19 09:47:19,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:19,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:19,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 09:47:19,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:19,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:19,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1484367723, now seen corresponding path program 1 times [2022-07-19 09:47:19,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:19,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150338502] [2022-07-19 09:47:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 09:47:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:20,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 09:47:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 09:47:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 09:47:20,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:20,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150338502] [2022-07-19 09:47:20,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150338502] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:20,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768714169] [2022-07-19 09:47:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:20,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:20,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:20,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:47:20,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 09:47:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:20,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-19 09:47:20,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:20,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:20,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2022-07-19 09:47:20,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:20,650 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:47:20,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2022-07-19 09:47:20,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:20,717 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:47:20,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 27 [2022-07-19 09:47:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 09:47:20,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:47:21,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-07-19 09:47:21,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2022-07-19 09:47:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 09:47:21,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768714169] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:47:21,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:47:21,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-07-19 09:47:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985123647] [2022-07-19 09:47:21,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:47:21,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-19 09:47:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-19 09:47:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2022-07-19 09:47:21,751 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-19 09:47:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:24,866 INFO L93 Difference]: Finished difference Result 271 states and 386 transitions. [2022-07-19 09:47:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-19 09:47:24,866 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 48 [2022-07-19 09:47:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:24,869 INFO L225 Difference]: With dead ends: 271 [2022-07-19 09:47:24,869 INFO L226 Difference]: Without dead ends: 219 [2022-07-19 09:47:24,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3246 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1410, Invalid=10362, Unknown=0, NotChecked=0, Total=11772 [2022-07-19 09:47:24,873 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 514 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:24,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 379 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1461 Invalid, 0 Unknown, 192 Unchecked, 0.9s Time] [2022-07-19 09:47:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-19 09:47:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 157. [2022-07-19 09:47:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 132 states have (on average 1.25) internal successors, (165), 139 states have internal predecessors, (165), 15 states have call successors, (15), 4 states have call predecessors, (15), 9 states have return successors, (48), 13 states have call predecessors, (48), 15 states have call successors, (48) [2022-07-19 09:47:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 228 transitions. [2022-07-19 09:47:24,894 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 228 transitions. Word has length 48 [2022-07-19 09:47:24,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:24,894 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 228 transitions. [2022-07-19 09:47:24,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 2.297872340425532) internal successors, (108), 46 states have internal predecessors, (108), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-19 09:47:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 228 transitions. [2022-07-19 09:47:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-19 09:47:24,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:24,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:24,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 09:47:25,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:25,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 779674309, now seen corresponding path program 2 times [2022-07-19 09:47:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79394305] [2022-07-19 09:47:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 09:47:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 09:47:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:25,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 09:47:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 09:47:25,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:25,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79394305] [2022-07-19 09:47:25,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79394305] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:25,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87248802] [2022-07-19 09:47:25,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 09:47:25,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:25,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:25,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:47:25,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 09:47:25,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 09:47:25,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:47:25,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-19 09:47:25,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:25,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:25,645 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:47:25,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23 [2022-07-19 09:47:25,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:25,795 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:47:25,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-07-19 09:47:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:25,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 09:47:25,857 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:47:25,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-07-19 09:47:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 09:47:26,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:47:26,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 92 [2022-07-19 09:47:26,360 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-19 09:47:26,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 1 [2022-07-19 09:47:26,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 92 [2022-07-19 09:47:26,540 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-19 09:47:26,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 1 [2022-07-19 09:47:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 09:47:26,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87248802] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:47:26,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:47:26,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 14] total 43 [2022-07-19 09:47:26,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488017575] [2022-07-19 09:47:26,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:47:26,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-19 09:47:26,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:26,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-19 09:47:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 09:47:26,543 INFO L87 Difference]: Start difference. First operand 157 states and 228 transitions. Second operand has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 09:47:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:28,631 INFO L93 Difference]: Finished difference Result 320 states and 441 transitions. [2022-07-19 09:47:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 09:47:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) Word has length 48 [2022-07-19 09:47:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:28,641 INFO L225 Difference]: With dead ends: 320 [2022-07-19 09:47:28,641 INFO L226 Difference]: Without dead ends: 236 [2022-07-19 09:47:28,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=866, Invalid=5940, Unknown=0, NotChecked=0, Total=6806 [2022-07-19 09:47:28,644 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 353 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:28,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 357 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1116 Invalid, 0 Unknown, 378 Unchecked, 0.7s Time] [2022-07-19 09:47:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-19 09:47:28,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 146. [2022-07-19 09:47:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 130 states have internal predecessors, (152), 15 states have call successors, (15), 3 states have call predecessors, (15), 8 states have return successors, (45), 12 states have call predecessors, (45), 15 states have call successors, (45) [2022-07-19 09:47:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 212 transitions. [2022-07-19 09:47:28,678 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 212 transitions. Word has length 48 [2022-07-19 09:47:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:28,678 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 212 transitions. [2022-07-19 09:47:28,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 2.625) internal successors, (105), 39 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 5 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 09:47:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 212 transitions. [2022-07-19 09:47:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 09:47:28,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:28,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:28,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 09:47:28,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:28,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1369061923, now seen corresponding path program 1 times [2022-07-19 09:47:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:28,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031537453] [2022-07-19 09:47:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 09:47:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 09:47:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 09:47:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 09:47:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:29,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031537453] [2022-07-19 09:47:29,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031537453] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:29,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830043827] [2022-07-19 09:47:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:29,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:29,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:29,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:47:29,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 09:47:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:29,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-19 09:47:29,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 09:47:29,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:47:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 09:47:29,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830043827] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:47:29,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:47:29,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 18 [2022-07-19 09:47:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623123662] [2022-07-19 09:47:29,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:47:29,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 09:47:29,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 09:47:29,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-19 09:47:29,480 INFO L87 Difference]: Start difference. First operand 146 states and 212 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 09:47:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:29,690 INFO L93 Difference]: Finished difference Result 246 states and 396 transitions. [2022-07-19 09:47:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 09:47:29,692 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2022-07-19 09:47:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:29,694 INFO L225 Difference]: With dead ends: 246 [2022-07-19 09:47:29,694 INFO L226 Difference]: Without dead ends: 242 [2022-07-19 09:47:29,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 19 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-07-19 09:47:29,695 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:29,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 514 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:47:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-19 09:47:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 197. [2022-07-19 09:47:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 177 states have internal predecessors, (210), 21 states have call successors, (21), 3 states have call predecessors, (21), 11 states have return successors, (88), 16 states have call predecessors, (88), 21 states have call successors, (88) [2022-07-19 09:47:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 319 transitions. [2022-07-19 09:47:29,740 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 319 transitions. Word has length 50 [2022-07-19 09:47:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:29,741 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 319 transitions. [2022-07-19 09:47:29,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 09:47:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 319 transitions. [2022-07-19 09:47:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 09:47:29,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:29,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:29,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 09:47:29,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:29,978 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash 605481843, now seen corresponding path program 3 times [2022-07-19 09:47:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:29,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141418353] [2022-07-19 09:47:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 09:47:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 09:47:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 09:47:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 09:47:30,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:30,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141418353] [2022-07-19 09:47:30,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141418353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:30,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288012593] [2022-07-19 09:47:30,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 09:47:30,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:30,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:30,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:47:30,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 09:47:30,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-19 09:47:30,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:47:30,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 09:47:30,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 09:47:30,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:47:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 09:47:30,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288012593] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:47:30,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:47:30,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 15 [2022-07-19 09:47:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653602081] [2022-07-19 09:47:30,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:47:30,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 09:47:30,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 09:47:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-19 09:47:30,239 INFO L87 Difference]: Start difference. First operand 197 states and 319 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 09:47:30,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:30,451 INFO L93 Difference]: Finished difference Result 434 states and 707 transitions. [2022-07-19 09:47:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 09:47:30,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-07-19 09:47:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:30,454 INFO L225 Difference]: With dead ends: 434 [2022-07-19 09:47:30,454 INFO L226 Difference]: Without dead ends: 334 [2022-07-19 09:47:30,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2022-07-19 09:47:30,456 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 204 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:30,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 349 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:47:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-19 09:47:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 286. [2022-07-19 09:47:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 259 states have internal predecessors, (306), 27 states have call successors, (27), 5 states have call predecessors, (27), 15 states have return successors, (121), 21 states have call predecessors, (121), 27 states have call successors, (121) [2022-07-19 09:47:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 454 transitions. [2022-07-19 09:47:30,492 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 454 transitions. Word has length 50 [2022-07-19 09:47:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:30,493 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 454 transitions. [2022-07-19 09:47:30,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 09:47:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 454 transitions. [2022-07-19 09:47:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 09:47:30,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:30,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:30,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 09:47:30,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:30,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -217318692, now seen corresponding path program 1 times [2022-07-19 09:47:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:30,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061461654] [2022-07-19 09:47:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:30,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:30,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 09:47:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 09:47:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 09:47:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 09:47:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:47:31,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061461654] [2022-07-19 09:47:31,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061461654] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:47:31,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909528497] [2022-07-19 09:47:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:31,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:47:31,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:47:31,080 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:47:31,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 09:47:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:47:31,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-19 09:47:31,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:47:31,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:31,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-07-19 09:47:31,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:31,457 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:47:31,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 23 [2022-07-19 09:47:31,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:47:31,500 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:47:31,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2022-07-19 09:47:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 09:47:31,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:47:32,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 125 [2022-07-19 09:47:32,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 91 [2022-07-19 09:47:32,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 125 [2022-07-19 09:47:32,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 91 [2022-07-19 09:47:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 09:47:32,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909528497] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:47:32,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:47:32,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 15] total 49 [2022-07-19 09:47:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036275155] [2022-07-19 09:47:32,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:47:32,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-19 09:47:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:47:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-19 09:47:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 09:47:32,445 INFO L87 Difference]: Start difference. First operand 286 states and 454 transitions. Second operand has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-19 09:47:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:47:35,659 INFO L93 Difference]: Finished difference Result 658 states and 1086 transitions. [2022-07-19 09:47:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-19 09:47:35,659 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) Word has length 52 [2022-07-19 09:47:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:47:35,662 INFO L225 Difference]: With dead ends: 658 [2022-07-19 09:47:35,662 INFO L226 Difference]: Without dead ends: 415 [2022-07-19 09:47:35,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 92 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3021 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=910, Invalid=8020, Unknown=0, NotChecked=0, Total=8930 [2022-07-19 09:47:35,665 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 394 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 590 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:47:35,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1403 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1885 Invalid, 0 Unknown, 590 Unchecked, 1.0s Time] [2022-07-19 09:47:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-19 09:47:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 347. [2022-07-19 09:47:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 297 states have (on average 1.2895622895622896) internal successors, (383), 319 states have internal predecessors, (383), 29 states have call successors, (29), 5 states have call predecessors, (29), 20 states have return successors, (210), 22 states have call predecessors, (210), 29 states have call successors, (210) [2022-07-19 09:47:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 622 transitions. [2022-07-19 09:47:35,696 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 622 transitions. Word has length 52 [2022-07-19 09:47:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:47:35,697 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 622 transitions. [2022-07-19 09:47:35,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 42 states have internal predecessors, (124), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-19 09:47:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 622 transitions. [2022-07-19 09:47:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 09:47:35,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:47:35,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:35,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 09:47:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 09:47:35,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:47:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:47:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 568180046, now seen corresponding path program 1 times [2022-07-19 09:47:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:47:35,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862171732] [2022-07-19 09:47:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:47:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:47:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 09:47:35,938 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 09:47:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 09:47:35,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 09:47:35,973 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 09:47:35,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 09:47:35,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 09:47:35,977 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:47:35,979 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 09:47:36,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:47:36 BoogieIcfgContainer [2022-07-19 09:47:36,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 09:47:36,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 09:47:36,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 09:47:36,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 09:47:36,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:47:17" (3/4) ... [2022-07-19 09:47:36,029 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 09:47:36,060 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 09:47:36,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 09:47:36,061 INFO L158 Benchmark]: Toolchain (without parser) took 19383.88ms. Allocated memory was 98.6MB in the beginning and 182.5MB in the end (delta: 83.9MB). Free memory was 72.3MB in the beginning and 67.0MB in the end (delta: 5.3MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. [2022-07-19 09:47:36,061 INFO L158 Benchmark]: CDTParser took 0.84ms. Allocated memory is still 98.6MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 09:47:36,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.32ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 72.0MB in the end (delta: 110.9kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 09:47:36,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.07ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 70.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 09:47:36,062 INFO L158 Benchmark]: Boogie Preprocessor took 35.39ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 09:47:36,062 INFO L158 Benchmark]: RCFGBuilder took 316.76ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 57.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 09:47:36,062 INFO L158 Benchmark]: TraceAbstraction took 18730.00ms. Allocated memory was 98.6MB in the beginning and 182.5MB in the end (delta: 83.9MB). Free memory was 56.9MB in the beginning and 71.2MB in the end (delta: -14.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-07-19 09:47:36,063 INFO L158 Benchmark]: Witness Printer took 33.71ms. Allocated memory is still 182.5MB. Free memory was 71.2MB in the beginning and 67.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 09:47:36,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84ms. Allocated memory is still 98.6MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.32ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 72.0MB in the end (delta: 110.9kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.07ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 70.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.39ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.76ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 57.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18730.00ms. Allocated memory was 98.6MB in the beginning and 182.5MB in the end (delta: 83.9MB). Free memory was 56.9MB in the beginning and 71.2MB in the end (delta: -14.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Witness Printer took 33.71ms. Allocated memory is still 182.5MB. Free memory was 71.2MB in the beginning and 67.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 57]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [i=0, N=2, x={3:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [i=1, N=2, x={3:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [i=2, N=2, x={3:0}] [L40] COND FALSE !(i < N) VAL [i=2, N=2, x={3:0}] [L45] CALL, EXPR bAnd(x) VAL [\old(res = res & x[i])=6442450946, N=2, res = res & x[i]=6442450946, x={3:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-8, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-8, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-1x[i]=-1] [L25] res = res & x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-1x[i]=-1] [L24] i++ VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND FALSE !(i < N) VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L27] return res; VAL [\old(res = res & x[i])=6442450946, \result=-2147483647, i=2, N=2, res=6442450945, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L45] RET, EXPR bAnd(x) VAL [bAnd(x)=-2147483647, i=2, N=2, res = res & x[i]=6442450946, x={3:0}] [L45] ret = bAnd(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp VAL [i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, temp=-8, x={3:0}] [L48] CALL, EXPR bAnd(x) VAL [\old(res = res & x[i])=6442450946, N=2, res = res & x[i]=6442450946, x={3:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-1, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=-1, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-8x[i]=-8] [L25] res = res & x[i] VAL [\old(res = res & x[i])=6442450946, i=1, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}, x[i]=-8x[i]=-8] [L24] i++ VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L24] COND FALSE !(i < N) VAL [\old(res = res & x[i])=6442450946, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L27] return res; VAL [\old(res = res & x[i])=6442450946, \result=0, i=2, N=2, res=0, res = res & x[i]=6442450946, x={3:0}, x={3:0}] [L48] RET, EXPR bAnd(x) VAL [bAnd(x)=0, i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, temp=-8, x={3:0}] [L48] ret2 = bAnd(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [i=0, i=2, N=2, res = res & x[i]=6442450946, ret=-2147483647, ret2=0, temp=-1, x={3:0}] [L50] COND TRUE i