./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/loops-crafted-1/nested_delay_nd.c -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 39463d01f5c85d47bf5e231172595e96b8ff556c59c4a9ab8cf46a88a393b05c --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:35:37,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:35:37,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:35:37,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:35:37,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:35:37,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:35:37,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:35:37,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:35:37,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:35:37,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:35:37,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:35:37,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:35:37,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:35:37,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:35:37,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:35:37,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:35:37,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:35:37,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:35:37,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:35:37,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:35:37,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:35:37,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:35:37,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:35:37,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:35:37,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:35:37,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:35:37,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:35:37,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:35:37,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:35:37,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:35:37,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:35:37,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:35:37,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:35:37,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:35:37,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:35:37,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:35:37,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:35:37,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:35:37,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:35:37,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:35:37,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:35:37,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:35:37,299 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:35:37,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:35:37,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:35:37,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:35:37,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:35:37,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:35:37,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:35:37,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:35:37,301 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:35:37,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:35:37,301 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:35:37,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:35:37,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:35:37,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:35:37,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:35:37,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:35:37,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:35:37,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:35:37,304 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:35:37,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:35:37,304 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:35:37,304 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39463d01f5c85d47bf5e231172595e96b8ff556c59c4a9ab8cf46a88a393b05c [2023-02-16 01:35:37,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:35:37,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:35:37,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:35:37,548 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:35:37,549 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:35:37,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2023-02-16 01:35:38,729 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:35:38,912 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:35:38,913 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2023-02-16 01:35:38,919 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48b414b7f/aaddb92b92a14386904140c9f962c318/FLAG7d58c4687 [2023-02-16 01:35:38,939 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48b414b7f/aaddb92b92a14386904140c9f962c318 [2023-02-16 01:35:38,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:35:38,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:35:38,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:35:38,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:35:38,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:35:38,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:35:38" (1/1) ... [2023-02-16 01:35:38,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8515c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:38, skipping insertion in model container [2023-02-16 01:35:38,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:35:38" (1/1) ... [2023-02-16 01:35:38,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:35:38,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:35:39,098 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c[465,478] [2023-02-16 01:35:39,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:35:39,119 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:35:39,128 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c[465,478] [2023-02-16 01:35:39,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:35:39,143 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:35:39,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39 WrapperNode [2023-02-16 01:35:39,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:35:39,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:35:39,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:35:39,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:35:39,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,169 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-02-16 01:35:39,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:35:39,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:35:39,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:35:39,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:35:39,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:35:39,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:35:39,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:35:39,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:35:39,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (1/1) ... [2023-02-16 01:35:39,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:35:39,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:35:39,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 01:35:39,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 01:35:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:35:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:35:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:35:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:35:39,318 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:35:39,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:35:39,481 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:35:39,486 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:35:39,487 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:35:39,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:35:39 BoogieIcfgContainer [2023-02-16 01:35:39,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:35:39,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:35:39,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:35:39,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:35:39,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:35:38" (1/3) ... [2023-02-16 01:35:39,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3670b06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:35:39, skipping insertion in model container [2023-02-16 01:35:39,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:35:39" (2/3) ... [2023-02-16 01:35:39,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3670b06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:35:39, skipping insertion in model container [2023-02-16 01:35:39,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:35:39" (3/3) ... [2023-02-16 01:35:39,497 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2023-02-16 01:35:39,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:35:39,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:35:39,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:35:39,600 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2244eb45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:35:39,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:35:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 01:35:39,614 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:39,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:39,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash -493598204, now seen corresponding path program 1 times [2023-02-16 01:35:39,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:39,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718588176] [2023-02-16 01:35:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:39,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:39,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:39,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718588176] [2023-02-16 01:35:39,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718588176] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:35:39,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:35:39,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:35:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398422664] [2023-02-16 01:35:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:35:39,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:35:39,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:35:39,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:35:39,834 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:39,849 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2023-02-16 01:35:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:35:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 01:35:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:39,861 INFO L225 Difference]: With dead ends: 35 [2023-02-16 01:35:39,861 INFO L226 Difference]: Without dead ends: 17 [2023-02-16 01:35:39,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:35:39,868 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:39,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-16 01:35:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-16 01:35:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-02-16 01:35:39,894 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 12 [2023-02-16 01:35:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:39,894 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-02-16 01:35:39,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2023-02-16 01:35:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 01:35:39,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:39,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:39,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:35:39,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:39,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2059231113, now seen corresponding path program 1 times [2023-02-16 01:35:39,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:39,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894281583] [2023-02-16 01:35:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:39,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:40,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894281583] [2023-02-16 01:35:40,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894281583] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:35:40,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:35:40,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:35:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700625003] [2023-02-16 01:35:40,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:35:40,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:35:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:35:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:35:40,053 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:40,112 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2023-02-16 01:35:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:35:40,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 01:35:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:40,114 INFO L225 Difference]: With dead ends: 34 [2023-02-16 01:35:40,114 INFO L226 Difference]: Without dead ends: 21 [2023-02-16 01:35:40,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:35:40,116 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:40,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 18 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-16 01:35:40,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2023-02-16 01:35:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2023-02-16 01:35:40,126 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 12 [2023-02-16 01:35:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:40,127 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-02-16 01:35:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-02-16 01:35:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 01:35:40,129 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:40,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:40,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:35:40,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash 573171571, now seen corresponding path program 1 times [2023-02-16 01:35:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:40,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538092793] [2023-02-16 01:35:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:40,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:35:40,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:40,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538092793] [2023-02-16 01:35:40,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538092793] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:35:40,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:35:40,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:35:40,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198661595] [2023-02-16 01:35:40,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:35:40,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:35:40,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:40,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:35:40,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:35:40,248 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:40,294 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-16 01:35:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:35:40,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-16 01:35:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:40,295 INFO L225 Difference]: With dead ends: 41 [2023-02-16 01:35:40,296 INFO L226 Difference]: Without dead ends: 27 [2023-02-16 01:35:40,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:35:40,298 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:40,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 34 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-16 01:35:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2023-02-16 01:35:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-02-16 01:35:40,307 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 15 [2023-02-16 01:35:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:40,308 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-02-16 01:35:40,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-02-16 01:35:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 01:35:40,308 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:40,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:40,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 01:35:40,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 630429873, now seen corresponding path program 1 times [2023-02-16 01:35:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:40,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110032010] [2023-02-16 01:35:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:35:40,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:40,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110032010] [2023-02-16 01:35:40,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110032010] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:35:40,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:35:40,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:35:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63564184] [2023-02-16 01:35:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:35:40,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:35:40,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:35:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:35:40,479 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:40,521 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2023-02-16 01:35:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:35:40,521 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-16 01:35:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:40,525 INFO L225 Difference]: With dead ends: 49 [2023-02-16 01:35:40,525 INFO L226 Difference]: Without dead ends: 34 [2023-02-16 01:35:40,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:35:40,527 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:40,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-16 01:35:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-02-16 01:35:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2023-02-16 01:35:40,535 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 15 [2023-02-16 01:35:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:40,536 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2023-02-16 01:35:40,536 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,536 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2023-02-16 01:35:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 01:35:40,536 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:40,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:40,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 01:35:40,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:40,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash 630489455, now seen corresponding path program 1 times [2023-02-16 01:35:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:40,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824106538] [2023-02-16 01:35:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824106538] [2023-02-16 01:35:40,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824106538] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:35:40,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988121106] [2023-02-16 01:35:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:40,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:40,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:35:40,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:35:40,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:35:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:40,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 01:35:40,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:35:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:40,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:35:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:40,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988121106] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:35:40,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:35:40,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-02-16 01:35:40,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938947106] [2023-02-16 01:35:40,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:35:40,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 01:35:40,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 01:35:40,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:35:40,840 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:40,904 INFO L93 Difference]: Finished difference Result 79 states and 115 transitions. [2023-02-16 01:35:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:35:40,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-16 01:35:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:40,912 INFO L225 Difference]: With dead ends: 79 [2023-02-16 01:35:40,912 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 01:35:40,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:35:40,914 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:40,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 01:35:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-02-16 01:35:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2023-02-16 01:35:40,938 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 15 [2023-02-16 01:35:40,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:40,939 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2023-02-16 01:35:40,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2023-02-16 01:35:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 01:35:40,940 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:40,940 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:40,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:35:41,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:41,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash -901646477, now seen corresponding path program 2 times [2023-02-16 01:35:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:41,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399996460] [2023-02-16 01:35:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:41,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:41,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399996460] [2023-02-16 01:35:41,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399996460] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:35:41,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490548575] [2023-02-16 01:35:41,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:35:41,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:41,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:35:41,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:35:41,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:35:41,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:35:41,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:35:41,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:35:41,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:35:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 01:35:41,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:35:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 01:35:41,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490548575] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:35:41,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:35:41,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-02-16 01:35:41,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23676437] [2023-02-16 01:35:41,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:35:41,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 01:35:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 01:35:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-02-16 01:35:41,576 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:42,010 INFO L93 Difference]: Finished difference Result 210 states and 294 transitions. [2023-02-16 01:35:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 01:35:42,010 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-16 01:35:42,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:42,011 INFO L225 Difference]: With dead ends: 210 [2023-02-16 01:35:42,012 INFO L226 Difference]: Without dead ends: 164 [2023-02-16 01:35:42,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=951, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 01:35:42,013 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 249 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:42,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 70 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:35:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-02-16 01:35:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 142. [2023-02-16 01:35:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.2765957446808511) internal successors, (180), 141 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2023-02-16 01:35:42,031 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 24 [2023-02-16 01:35:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:42,031 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2023-02-16 01:35:42,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2023-02-16 01:35:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 01:35:42,032 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:42,032 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:42,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:35:42,238 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,SelfDestructingSolverStorable5 [2023-02-16 01:35:42,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:42,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1843449907, now seen corresponding path program 1 times [2023-02-16 01:35:42,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:42,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397494544] [2023-02-16 01:35:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:42,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-16 01:35:42,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:42,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397494544] [2023-02-16 01:35:42,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397494544] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:35:42,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:35:42,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:35:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549582592] [2023-02-16 01:35:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:35:42,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:35:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:35:42,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:35:42,276 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:42,299 INFO L93 Difference]: Finished difference Result 331 states and 425 transitions. [2023-02-16 01:35:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:35:42,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-16 01:35:42,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:42,300 INFO L225 Difference]: With dead ends: 331 [2023-02-16 01:35:42,301 INFO L226 Difference]: Without dead ends: 193 [2023-02-16 01:35:42,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:35:42,302 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:42,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 38 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-02-16 01:35:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 144. [2023-02-16 01:35:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.2657342657342658) internal successors, (181), 143 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 181 transitions. [2023-02-16 01:35:42,318 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 181 transitions. Word has length 30 [2023-02-16 01:35:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:42,318 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 181 transitions. [2023-02-16 01:35:42,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 181 transitions. [2023-02-16 01:35:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 01:35:42,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:42,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:42,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 01:35:42,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash 397594855, now seen corresponding path program 1 times [2023-02-16 01:35:42,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:42,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971568362] [2023-02-16 01:35:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:42,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 01:35:42,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:42,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971568362] [2023-02-16 01:35:42,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971568362] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:35:42,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:35:42,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:35:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936797684] [2023-02-16 01:35:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:35:42,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:35:42,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:35:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:35:42,365 INFO L87 Difference]: Start difference. First operand 144 states and 181 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:42,384 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2023-02-16 01:35:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:35:42,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-16 01:35:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:42,386 INFO L225 Difference]: With dead ends: 231 [2023-02-16 01:35:42,386 INFO L226 Difference]: Without dead ends: 160 [2023-02-16 01:35:42,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:35:42,387 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:42,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-02-16 01:35:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2023-02-16 01:35:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.2448979591836735) internal successors, (183), 147 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 183 transitions. [2023-02-16 01:35:42,400 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 183 transitions. Word has length 31 [2023-02-16 01:35:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:42,401 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 183 transitions. [2023-02-16 01:35:42,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 183 transitions. [2023-02-16 01:35:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 01:35:42,402 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:42,402 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 01:35:42,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 399501479, now seen corresponding path program 1 times [2023-02-16 01:35:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921058950] [2023-02-16 01:35:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:42,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921058950] [2023-02-16 01:35:42,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921058950] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:35:42,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494679389] [2023-02-16 01:35:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:42,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:42,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:35:42,526 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) [2023-02-16 01:35:42,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:35:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:42,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 01:35:42,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:35:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:42,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:35:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:42,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494679389] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:35:42,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:35:42,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-02-16 01:35:42,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601872972] [2023-02-16 01:35:42,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:35:42,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 01:35:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 01:35:42,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=341, Unknown=0, NotChecked=0, Total=600 [2023-02-16 01:35:42,854 INFO L87 Difference]: Start difference. First operand 148 states and 183 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:43,056 INFO L93 Difference]: Finished difference Result 437 states and 587 transitions. [2023-02-16 01:35:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 01:35:43,057 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-16 01:35:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:43,058 INFO L225 Difference]: With dead ends: 437 [2023-02-16 01:35:43,058 INFO L226 Difference]: Without dead ends: 293 [2023-02-16 01:35:43,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=600, Unknown=0, NotChecked=0, Total=992 [2023-02-16 01:35:43,062 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 143 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:43,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 32 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:35:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-02-16 01:35:43,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2023-02-16 01:35:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.2336769759450172) internal successors, (359), 291 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 359 transitions. [2023-02-16 01:35:43,082 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 359 transitions. Word has length 31 [2023-02-16 01:35:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:43,083 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 359 transitions. [2023-02-16 01:35:43,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 359 transitions. [2023-02-16 01:35:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-16 01:35:43,090 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:43,090 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:43,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:35:43,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:43,296 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -871125337, now seen corresponding path program 2 times [2023-02-16 01:35:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068814974] [2023-02-16 01:35:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:43,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068814974] [2023-02-16 01:35:43,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068814974] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:35:43,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202679294] [2023-02-16 01:35:43,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:35:43,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:43,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:35:43,576 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) [2023-02-16 01:35:43,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:35:43,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:35:43,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:35:43,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 01:35:43,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:35:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:43,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:35:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:44,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202679294] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:35:44,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:35:44,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 48 [2023-02-16 01:35:44,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413077089] [2023-02-16 01:35:44,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:35:44,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-16 01:35:44,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-16 01:35:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=1325, Unknown=0, NotChecked=0, Total=2352 [2023-02-16 01:35:44,370 INFO L87 Difference]: Start difference. First operand 292 states and 359 transitions. Second operand has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:44,913 INFO L93 Difference]: Finished difference Result 869 states and 1163 transitions. [2023-02-16 01:35:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-16 01:35:44,914 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-02-16 01:35:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:44,916 INFO L225 Difference]: With dead ends: 869 [2023-02-16 01:35:44,916 INFO L226 Difference]: Without dead ends: 581 [2023-02-16 01:35:44,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1552, Invalid=2480, Unknown=0, NotChecked=0, Total=4032 [2023-02-16 01:35:44,918 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 271 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:44,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 27 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:35:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-02-16 01:35:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 580. [2023-02-16 01:35:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.2279792746113989) internal successors, (711), 579 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 711 transitions. [2023-02-16 01:35:44,946 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 711 transitions. Word has length 55 [2023-02-16 01:35:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:44,946 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 711 transitions. [2023-02-16 01:35:44,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 711 transitions. [2023-02-16 01:35:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-02-16 01:35:44,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:44,948 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:44,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:35:45,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:45,154 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1917139623, now seen corresponding path program 3 times [2023-02-16 01:35:45,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:45,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119093086] [2023-02-16 01:35:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:46,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119093086] [2023-02-16 01:35:46,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119093086] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:35:46,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484272107] [2023-02-16 01:35:46,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 01:35:46,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:46,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:35:46,056 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) [2023-02-16 01:35:46,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:35:46,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-16 01:35:46,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:35:46,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 01:35:46,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:35:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 86 proven. 59 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2023-02-16 01:35:46,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:35:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2023-02-16 01:35:47,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484272107] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:35:47,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:35:47,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 12, 9] total 51 [2023-02-16 01:35:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636668135] [2023-02-16 01:35:47,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:35:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-16 01:35:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-16 01:35:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=1803, Unknown=0, NotChecked=0, Total=2550 [2023-02-16 01:35:47,426 INFO L87 Difference]: Start difference. First operand 580 states and 711 transitions. Second operand has 51 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 51 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:56,506 INFO L93 Difference]: Finished difference Result 2247 states and 2803 transitions. [2023-02-16 01:35:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2023-02-16 01:35:56,507 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 51 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-02-16 01:35:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:56,513 INFO L225 Difference]: With dead ends: 2247 [2023-02-16 01:35:56,513 INFO L226 Difference]: Without dead ends: 1461 [2023-02-16 01:35:56,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34298 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=15187, Invalid=72133, Unknown=0, NotChecked=0, Total=87320 [2023-02-16 01:35:56,536 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1316 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:56,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 158 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 01:35:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2023-02-16 01:35:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1039. [2023-02-16 01:35:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 1.2716763005780347) internal successors, (1320), 1038 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1320 transitions. [2023-02-16 01:35:56,591 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1320 transitions. Word has length 103 [2023-02-16 01:35:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:56,591 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1320 transitions. [2023-02-16 01:35:56,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 51 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1320 transitions. [2023-02-16 01:35:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-16 01:35:56,592 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:56,592 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:56,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 01:35:56,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 01:35:56,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1166325863, now seen corresponding path program 1 times [2023-02-16 01:35:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:56,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824478055] [2023-02-16 01:35:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:56,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2023-02-16 01:35:56,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:56,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824478055] [2023-02-16 01:35:56,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824478055] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:35:56,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:35:56,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:35:56,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045410101] [2023-02-16 01:35:56,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:35:56,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:35:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:35:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:35:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:35:56,891 INFO L87 Difference]: Start difference. First operand 1039 states and 1320 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:35:57,004 INFO L93 Difference]: Finished difference Result 2286 states and 2886 transitions. [2023-02-16 01:35:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:35:57,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-02-16 01:35:57,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:35:57,010 INFO L225 Difference]: With dead ends: 2286 [2023-02-16 01:35:57,010 INFO L226 Difference]: Without dead ends: 1346 [2023-02-16 01:35:57,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:35:57,012 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 73 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:35:57,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 38 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:35:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-02-16 01:35:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1341. [2023-02-16 01:35:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1340 states have (on average 1.2835820895522387) internal successors, (1720), 1340 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1720 transitions. [2023-02-16 01:35:57,101 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1720 transitions. Word has length 109 [2023-02-16 01:35:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:35:57,103 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1720 transitions. [2023-02-16 01:35:57,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:35:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1720 transitions. [2023-02-16 01:35:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-16 01:35:57,107 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:35:57,108 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:35:57,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 01:35:57,108 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:35:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:35:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1166385445, now seen corresponding path program 1 times [2023-02-16 01:35:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:35:57,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236051973] [2023-02-16 01:35:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:57,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:35:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:57,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:35:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236051973] [2023-02-16 01:35:57,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236051973] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:35:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284525920] [2023-02-16 01:35:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:35:57,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:35:57,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:35:57,916 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) [2023-02-16 01:35:57,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:35:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:35:57,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-16 01:35:57,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:35:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:35:58,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:36:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:36:00,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284525920] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:36:00,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:36:00,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 102 [2023-02-16 01:36:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456953646] [2023-02-16 01:36:00,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:36:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-02-16 01:36:00,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:36:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-02-16 01:36:00,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4627, Invalid=5879, Unknown=0, NotChecked=0, Total=10506 [2023-02-16 01:36:00,174 INFO L87 Difference]: Start difference. First operand 1341 states and 1720 transitions. Second operand has 103 states, 103 states have (on average 3.0) internal successors, (309), 102 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:36:01,864 INFO L93 Difference]: Finished difference Result 3992 states and 5559 transitions. [2023-02-16 01:36:01,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-02-16 01:36:01,865 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.0) internal successors, (309), 102 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-02-16 01:36:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:36:01,873 INFO L225 Difference]: With dead ends: 3992 [2023-02-16 01:36:01,874 INFO L226 Difference]: Without dead ends: 2655 [2023-02-16 01:36:01,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6597 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6970, Invalid=11390, Unknown=0, NotChecked=0, Total=18360 [2023-02-16 01:36:01,878 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 418 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:36:01,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 32 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:36:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2023-02-16 01:36:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2654. [2023-02-16 01:36:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2653 states have (on average 1.2815680361854505) internal successors, (3400), 2653 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3400 transitions. [2023-02-16 01:36:02,027 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3400 transitions. Word has length 109 [2023-02-16 01:36:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:36:02,027 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 3400 transitions. [2023-02-16 01:36:02,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.0) internal successors, (309), 102 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3400 transitions. [2023-02-16 01:36:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-02-16 01:36:02,030 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:36:02,030 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:36:02,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 01:36:02,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:36:02,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:36:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:36:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash -819651099, now seen corresponding path program 2 times [2023-02-16 01:36:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:36:02,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302341482] [2023-02-16 01:36:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:36:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:36:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:36:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:36:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:36:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302341482] [2023-02-16 01:36:04,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302341482] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:36:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504650225] [2023-02-16 01:36:04,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:36:04,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:36:04,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:36:04,935 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) [2023-02-16 01:36:04,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 01:36:05,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:36:05,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:36:05,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 69 conjunts are in the unsatisfiable core [2023-02-16 01:36:05,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:36:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:36:07,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:36:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:36:12,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504650225] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:36:12,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:36:12,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 204 [2023-02-16 01:36:12,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379798745] [2023-02-16 01:36:12,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:36:12,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 205 states [2023-02-16 01:36:12,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:36:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2023-02-16 01:36:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18499, Invalid=23321, Unknown=0, NotChecked=0, Total=41820 [2023-02-16 01:36:12,210 INFO L87 Difference]: Start difference. First operand 2654 states and 3400 transitions. Second operand has 205 states, 205 states have (on average 3.0) internal successors, (615), 204 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:18,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:36:18,484 INFO L93 Difference]: Finished difference Result 7957 states and 11081 transitions. [2023-02-16 01:36:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-02-16 01:36:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 205 states, 205 states have (on average 3.0) internal successors, (615), 204 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-02-16 01:36:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:36:18,502 INFO L225 Difference]: With dead ends: 7957 [2023-02-16 01:36:18,502 INFO L226 Difference]: Without dead ends: 5307 [2023-02-16 01:36:18,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27065 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=27812, Invalid=45900, Unknown=0, NotChecked=0, Total=73712 [2023-02-16 01:36:18,511 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1227 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 01:36:18,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 57 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 01:36:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2023-02-16 01:36:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 5306. [2023-02-16 01:36:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5305 states have (on average 1.2818096135721018) internal successors, (6800), 5305 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 6800 transitions. [2023-02-16 01:36:18,804 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 6800 transitions. Word has length 211 [2023-02-16 01:36:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:36:18,804 INFO L495 AbstractCegarLoop]: Abstraction has 5306 states and 6800 transitions. [2023-02-16 01:36:18,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 205 states, 205 states have (on average 3.0) internal successors, (615), 204 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 6800 transitions. [2023-02-16 01:36:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-02-16 01:36:18,810 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:36:18,811 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:36:18,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 01:36:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:36:19,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:36:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:36:19,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1156802405, now seen corresponding path program 3 times [2023-02-16 01:36:19,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:36:19,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571799224] [2023-02-16 01:36:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:36:19,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:36:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:36:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 26867 backedges. 0 proven. 26867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:36:28,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:36:28,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571799224] [2023-02-16 01:36:28,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571799224] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:36:28,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462498235] [2023-02-16 01:36:28,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 01:36:28,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:36:28,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:36:28,818 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) [2023-02-16 01:36:28,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 01:36:28,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-16 01:36:28,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:36:28,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 01:36:28,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:36:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 26867 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 26600 trivial. 0 not checked. [2023-02-16 01:36:29,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:36:29,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462498235] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:36:29,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:36:29,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [137] total 141 [2023-02-16 01:36:29,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392339978] [2023-02-16 01:36:29,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:36:29,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:36:29,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:36:29,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:36:29,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9326, Invalid=10414, Unknown=0, NotChecked=0, Total=19740 [2023-02-16 01:36:29,059 INFO L87 Difference]: Start difference. First operand 5306 states and 6800 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:36:29,297 INFO L93 Difference]: Finished difference Result 7056 states and 9086 transitions. [2023-02-16 01:36:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:36:29,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2023-02-16 01:36:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:36:29,298 INFO L225 Difference]: With dead ends: 7056 [2023-02-16 01:36:29,298 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 01:36:29,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=9336, Invalid=10970, Unknown=0, NotChecked=0, Total=20306 [2023-02-16 01:36:29,306 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:36:29,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:36:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 01:36:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 01:36:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:29,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 01:36:29,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 415 [2023-02-16 01:36:29,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:36:29,308 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 01:36:29,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:36:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 01:36:29,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 01:36:29,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 01:36:29,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 01:36:29,516 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,SelfDestructingSolverStorable14 [2023-02-16 01:36:29,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 01:36:45,749 WARN L233 SmtUtils]: Spent 16.08s on a formula simplification. DAG size of input: 1334 DAG size of output: 48 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-16 01:36:45,854 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2023-02-16 01:36:45,857 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 29) the Hoare annotation is: (let ((.cse12 (= 1 |ULTIMATE.start_main_~st~0#1|)) (.cse6 (< ~last~0 ~SIZE~0))) (let ((.cse10 (<= |ULTIMATE.start_main_~c~0#1| ~last~0)) (.cse7 (<= (+ |ULTIMATE.start_main_~d~0#1| 199999) ~SIZE~0)) (.cse9 (<= ~last~0 0)) (.cse0 (= 0 |ULTIMATE.start_main_~d~0#1|)) (.cse11 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1)) (.cse2 (= |ULTIMATE.start_main_~st~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (or (< |ULTIMATE.start_main_~c~0#1| ~SIZE~0) (and .cse12 .cse6) (= |ULTIMATE.start_main_~c~0#1| ~SIZE~0))) (.cse1 (= |ULTIMATE.start_main_~a~0#1| 0)) (.cse3 (<= 200000 ~SIZE~0)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~c~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse7 .cse2 .cse8 .cse3 .cse9 (not .cse10) (not (= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) .cse4) (and (or (and .cse11 .cse0 .cse8 .cse3 .cse12 .cse4) (and .cse1 .cse0 .cse3 .cse12 .cse4 .cse5)) .cse10) (and .cse11 .cse7 .cse8 .cse3 .cse9 .cse12 .cse13) (and .cse0 .cse11 .cse2 .cse8 .cse3 .cse4 .cse6) (and .cse1 (= |ULTIMATE.start_main_~d~0#1| 0) .cse3 .cse12 .cse5 .cse13)))) [2023-02-16 01:36:45,858 INFO L899 garLoopResultBuilder]: For program point L27-4(lines 25 45) no Hoare annotation was computed. [2023-02-16 01:36:45,858 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-16 01:36:45,858 INFO L895 garLoopResultBuilder]: At program point L11-2(lines 10 15) the Hoare annotation is: (let ((.cse2 (= |ULTIMATE.start_main_~c~0#1| ~SIZE~0)) (.cse3 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1)) (.cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse1 (<= 200000 ~SIZE~0))) (or (and (let ((.cse0 (= 0 |ULTIMATE.start_main_~d~0#1|))) (or (and .cse0 .cse1 (< ~last~0 ~SIZE~0)) (and .cse0 .cse1 (= 1 |ULTIMATE.start_main_~st~0#1|)))) .cse2 .cse3 .cse4) (and .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~d~0#1| 199999) ~SIZE~0) (= |ULTIMATE.start_main_~st~0#1| 0) .cse4 .cse1 (<= ~last~0 0)))) [2023-02-16 01:36:45,858 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 20 47) the Hoare annotation is: false [2023-02-16 01:36:45,858 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2023-02-16 01:36:45,858 INFO L899 garLoopResultBuilder]: For program point L36-2(lines 25 45) no Hoare annotation was computed. [2023-02-16 01:36:45,858 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 45) the Hoare annotation is: (let ((.cse2 (= 0 |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_main_~c~0#1| ~SIZE~0)) (.cse1 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= 200000 ~SIZE~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~a~0#1| 0) .cse2 .cse4 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse0 .cse1 (<= (+ |ULTIMATE.start_main_~d~0#1| 199999) ~SIZE~0) (= |ULTIMATE.start_main_~st~0#1| 0) .cse3 .cse4 (<= ~last~0 0)))) [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point L25-3(lines 25 45) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point L5(lines 5 7) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point L30-1(lines 25 45) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2023-02-16 01:36:45,859 INFO L899 garLoopResultBuilder]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2023-02-16 01:36:45,862 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:36:45,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 01:36:45,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:36:45 BoogieIcfgContainer [2023-02-16 01:36:45,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 01:36:45,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 01:36:45,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 01:36:45,880 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 01:36:45,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:35:39" (3/4) ... [2023-02-16 01:36:45,883 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 01:36:45,891 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-16 01:36:45,892 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 01:36:45,892 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 01:36:45,892 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 01:36:45,926 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 01:36:45,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 01:36:45,927 INFO L158 Benchmark]: Toolchain (without parser) took 66985.05ms. Allocated memory was 117.4MB in the beginning and 908.1MB in the end (delta: 790.6MB). Free memory was 74.9MB in the beginning and 599.4MB in the end (delta: -524.5MB). Peak memory consumption was 266.6MB. Max. memory is 16.1GB. [2023-02-16 01:36:45,927 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:36:45,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.96ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 64.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:36:45,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.74ms. Allocated memory is still 117.4MB. Free memory was 64.5MB in the beginning and 62.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:36:45,928 INFO L158 Benchmark]: Boogie Preprocessor took 29.89ms. Allocated memory is still 117.4MB. Free memory was 62.8MB in the beginning and 61.9MB in the end (delta: 871.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:36:45,928 INFO L158 Benchmark]: RCFGBuilder took 287.67ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 88.4MB in the end (delta: -26.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-02-16 01:36:45,929 INFO L158 Benchmark]: TraceAbstraction took 66388.98ms. Allocated memory was 117.4MB in the beginning and 908.1MB in the end (delta: 790.6MB). Free memory was 87.8MB in the beginning and 601.5MB in the end (delta: -513.7MB). Peak memory consumption was 587.0MB. Max. memory is 16.1GB. [2023-02-16 01:36:45,929 INFO L158 Benchmark]: Witness Printer took 46.66ms. Allocated memory is still 908.1MB. Free memory was 601.5MB in the beginning and 599.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:36:45,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.96ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 64.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.74ms. Allocated memory is still 117.4MB. Free memory was 64.5MB in the beginning and 62.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.89ms. Allocated memory is still 117.4MB. Free memory was 62.8MB in the beginning and 61.9MB in the end (delta: 871.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 287.67ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 88.4MB in the end (delta: -26.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 66388.98ms. Allocated memory was 117.4MB in the beginning and 908.1MB in the end (delta: 790.6MB). Free memory was 87.8MB in the beginning and 601.5MB in the end (delta: -513.7MB). Peak memory consumption was 587.0MB. Max. memory is 16.1GB. * Witness Printer took 46.66ms. Allocated memory is still 908.1MB. Free memory was 601.5MB in the beginning and 599.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.3s, OverallIterations: 15, TraceHistogramMax: 134, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 16.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3847 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3847 mSDsluCounter, 639 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 386 mSDsCounter, 176 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3018 IncrementalHoareTripleChecker+Invalid, 3194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 176 mSolverCounterUnsat, 253 mSDtfsCounter, 3018 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2225 GetRequests, 1238 SyntacticMatches, 0 SemanticMatches, 987 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70524 ImplicationChecksByTransitivity, 32.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5306occurred in iteration=14, InterpolantAutomatonStates: 573, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 528 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 648 NumberOfFragments, 329 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 157415 FormulaSimplificationTreeSizeReductionInter, 16.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 27.2s InterpolantComputationTime, 2150 NumberOfCodeBlocks, 1667 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2668 ConstructedInterpolants, 0 QuantifiedInterpolants, 12352 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1106 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 31044/84509 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((c == SIZE && cond == 1) && 0 == d) && a == b) && 200000 <= SIZE) || ((((a == 0 && 0 == d) && 200000 <= SIZE) && c == 0) && b == 0)) || ((((((c == SIZE && cond == 1) && d + 199999 <= SIZE) && st == 0) && a == b) && 200000 <= SIZE) && last <= 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((0 == d && a == 0) && st == 0) && 200000 <= SIZE) && ((c < SIZE || (1 == st && last < SIZE)) || c == SIZE)) && b == 0) && last < SIZE) || (((((((d + 199999 <= SIZE && st == 0) && a == b) && 200000 <= SIZE) && last <= 0) && !(c <= last)) && !(0 == cond)) && ((c < SIZE || (1 == st && last < SIZE)) || c == SIZE))) || (((((((cond == 1 && 0 == d) && a == b) && 200000 <= SIZE) && 1 == st) && ((c < SIZE || (1 == st && last < SIZE)) || c == SIZE)) || (((((a == 0 && 0 == d) && 200000 <= SIZE) && 1 == st) && ((c < SIZE || (1 == st && last < SIZE)) || c == SIZE)) && b == 0)) && c <= last)) || ((((((cond == 1 && d + 199999 <= SIZE) && a == b) && 200000 <= SIZE) && last <= 0) && 1 == st) && c == 0)) || ((((((0 == d && cond == 1) && st == 0) && a == b) && 200000 <= SIZE) && ((c < SIZE || (1 == st && last < SIZE)) || c == SIZE)) && last < SIZE)) || (((((a == 0 && d == 0) && 200000 <= SIZE) && 1 == st) && b == 0) && c == 0) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((0 == d && 200000 <= SIZE) && last < SIZE) || ((0 == d && 200000 <= SIZE) && 1 == st)) && c == SIZE) && cond == 1) && a == b) || ((((((c == SIZE && cond == 1) && d + 199999 <= SIZE) && st == 0) && a == b) && 200000 <= SIZE) && last <= 0) RESULT: Ultimate proved your program to be correct! [2023-02-16 01:36:45,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE