./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.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 bbcb02f84aadc49a5c6c6cd26449c15fd97ea67d08608a672ddfc36ff8b8eddf --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:41:25,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:41:25,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:41:25,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:41:25,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:41:25,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:41:25,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:41:25,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:41:25,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:41:25,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:41:25,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:41:25,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:41:25,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:41:25,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:41:25,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:41:25,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:41:25,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:41:25,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:41:25,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:41:25,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:41:25,158 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:41:25,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:41:25,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:41:25,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:41:25,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:41:25,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:41:25,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:41:25,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:41:25,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:41:25,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:41:25,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:41:25,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:41:25,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:41:25,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:41:25,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:41:25,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:41:25,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:41:25,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:41:25,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:41:25,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:41:25,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:41:25,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:41:25,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:41:25,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:41:25,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:41:25,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:41:25,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:41:25,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:41:25,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:41:25,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:41:25,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:41:25,218 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:41:25,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:41:25,219 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:41:25,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:41:25,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:41:25,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:41:25,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:41:25,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:41:25,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:41:25,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:41:25,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:41:25,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:41:25,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:41:25,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:41:25,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:41:25,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:41:25,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:41:25,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:41:25,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:41:25,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:41:25,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:41:25,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:41:25,225 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:41:25,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:41:25,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:41:25,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbcb02f84aadc49a5c6c6cd26449c15fd97ea67d08608a672ddfc36ff8b8eddf [2022-07-19 18:41:25,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:41:25,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:41:25,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:41:25,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:41:25,476 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:41:25,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:41:25,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24436602/c7d43350a4e740a1a52d00c6d2964aa1/FLAG93a957b8e [2022-07-19 18:41:26,013 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:41:26,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:41:26,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24436602/c7d43350a4e740a1a52d00c6d2964aa1/FLAG93a957b8e [2022-07-19 18:41:26,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24436602/c7d43350a4e740a1a52d00c6d2964aa1 [2022-07-19 18:41:26,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:41:26,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:41:26,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:41:26,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:41:26,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:41:26,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:41:26" (1/1) ... [2022-07-19 18:41:26,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11fa410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:26, skipping insertion in model container [2022-07-19 18:41:26,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:41:26" (1/1) ... [2022-07-19 18:41:26,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:41:26,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:41:26,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34857,34870] [2022-07-19 18:41:27,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:41:27,048 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:41:27,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34857,34870] [2022-07-19 18:41:27,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:41:27,411 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:41:27,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27 WrapperNode [2022-07-19 18:41:27,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:41:27,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:41:27,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:41:27,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:41:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,529 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2907 [2022-07-19 18:41:27,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:41:27,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:41:27,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:41:27,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:41:27,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:41:27,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:41:27,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:41:27,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:41:27,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (1/1) ... [2022-07-19 18:41:27,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:41:27,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:41:27,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 18:41:27,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 18:41:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:41:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:41:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:41:27,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:41:27,970 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:41:27,972 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:41:29,478 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:41:29,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:41:29,505 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:41:29,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:41:29 BoogieIcfgContainer [2022-07-19 18:41:29,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:41:29,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:41:29,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:41:29,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:41:29,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:41:26" (1/3) ... [2022-07-19 18:41:29,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b76b931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:41:29, skipping insertion in model container [2022-07-19 18:41:29,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:41:27" (2/3) ... [2022-07-19 18:41:29,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b76b931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:41:29, skipping insertion in model container [2022-07-19 18:41:29,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:41:29" (3/3) ... [2022-07-19 18:41:29,526 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:41:29,540 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:41:29,540 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 18:41:29,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:41:29,623 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ca0cf68, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49530647 [2022-07-19 18:41:29,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 18:41:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 791 states, 789 states have (on average 1.7782002534854247) internal successors, (1403), 790 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-19 18:41:29,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:29,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:29,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:29,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -279814717, now seen corresponding path program 1 times [2022-07-19 18:41:29,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:29,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166290588] [2022-07-19 18:41:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:30,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166290588] [2022-07-19 18:41:30,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166290588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:30,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:30,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781629432] [2022-07-19 18:41:30,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:30,441 INFO L87 Difference]: Start difference. First operand has 791 states, 789 states have (on average 1.7782002534854247) internal successors, (1403), 790 states have internal predecessors, (1403), 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 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:30,723 INFO L93 Difference]: Finished difference Result 1508 states and 2652 transitions. [2022-07-19 18:41:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 314 [2022-07-19 18:41:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:30,751 INFO L225 Difference]: With dead ends: 1508 [2022-07-19 18:41:30,751 INFO L226 Difference]: Without dead ends: 1295 [2022-07-19 18:41:30,757 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 [2022-07-19 18:41:30,760 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 877 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:30,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 2467 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:30,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-07-19 18:41:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1293. [2022-07-19 18:41:30,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.5665634674922602) internal successors, (2024), 1292 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2024 transitions. [2022-07-19 18:41:30,863 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2024 transitions. Word has length 314 [2022-07-19 18:41:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:30,864 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 2024 transitions. [2022-07-19 18:41:30,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2024 transitions. [2022-07-19 18:41:30,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-19 18:41:30,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:30,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:30,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:41:30,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1281342321, now seen corresponding path program 1 times [2022-07-19 18:41:30,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:30,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511863312] [2022-07-19 18:41:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:30,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:31,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511863312] [2022-07-19 18:41:31,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511863312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:31,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:31,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19803598] [2022-07-19 18:41:31,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:31,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:31,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:31,071 INFO L87 Difference]: Start difference. First operand 1293 states and 2024 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:31,276 INFO L93 Difference]: Finished difference Result 2667 states and 4197 transitions. [2022-07-19 18:41:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 314 [2022-07-19 18:41:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:31,289 INFO L225 Difference]: With dead ends: 2667 [2022-07-19 18:41:31,289 INFO L226 Difference]: Without dead ends: 2285 [2022-07-19 18:41:31,298 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 [2022-07-19 18:41:31,300 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 720 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:31,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 2171 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-07-19 18:41:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-07-19 18:41:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2282 states have (on average 1.5600350569675723) internal successors, (3560), 2282 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3560 transitions. [2022-07-19 18:41:31,411 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3560 transitions. Word has length 314 [2022-07-19 18:41:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 3560 transitions. [2022-07-19 18:41:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3560 transitions. [2022-07-19 18:41:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-19 18:41:31,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:31,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:31,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:41:31,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash -649561541, now seen corresponding path program 1 times [2022-07-19 18:41:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367228124] [2022-07-19 18:41:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:31,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:31,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:31,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367228124] [2022-07-19 18:41:31,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367228124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:31,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:31,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773263442] [2022-07-19 18:41:31,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:31,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:31,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:31,669 INFO L87 Difference]: Start difference. First operand 2283 states and 3560 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:31,946 INFO L93 Difference]: Finished difference Result 4939 states and 7758 transitions. [2022-07-19 18:41:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:31,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 314 [2022-07-19 18:41:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:31,965 INFO L225 Difference]: With dead ends: 4939 [2022-07-19 18:41:31,965 INFO L226 Difference]: Without dead ends: 4225 [2022-07-19 18:41:31,969 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 [2022-07-19 18:41:31,970 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 711 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:31,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2156 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2022-07-19 18:41:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4223. [2022-07-19 18:41:32,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 4222 states have (on average 1.5547134059687353) internal successors, (6564), 4222 states have internal predecessors, (6564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 6564 transitions. [2022-07-19 18:41:32,158 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 6564 transitions. Word has length 314 [2022-07-19 18:41:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:32,159 INFO L495 AbstractCegarLoop]: Abstraction has 4223 states and 6564 transitions. [2022-07-19 18:41:32,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 6564 transitions. [2022-07-19 18:41:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-19 18:41:32,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:32,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:32,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:41:32,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:32,170 INFO L85 PathProgramCache]: Analyzing trace with hash -422405895, now seen corresponding path program 1 times [2022-07-19 18:41:32,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:32,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937776178] [2022-07-19 18:41:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:32,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:32,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937776178] [2022-07-19 18:41:32,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937776178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:32,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:32,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611860200] [2022-07-19 18:41:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:32,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:32,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:32,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:32,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:32,348 INFO L87 Difference]: Start difference. First operand 4223 states and 6564 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:32,715 INFO L93 Difference]: Finished difference Result 9355 states and 14666 transitions. [2022-07-19 18:41:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:32,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 314 [2022-07-19 18:41:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:32,746 INFO L225 Difference]: With dead ends: 9355 [2022-07-19 18:41:32,746 INFO L226 Difference]: Without dead ends: 8025 [2022-07-19 18:41:32,753 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 [2022-07-19 18:41:32,760 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 702 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2141 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8025 states. [2022-07-19 18:41:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8025 to 8023. [2022-07-19 18:41:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8023 states, 8022 states have (on average 1.550236848666168) internal successors, (12436), 8022 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8023 states to 8023 states and 12436 transitions. [2022-07-19 18:41:33,108 INFO L78 Accepts]: Start accepts. Automaton has 8023 states and 12436 transitions. Word has length 314 [2022-07-19 18:41:33,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:33,109 INFO L495 AbstractCegarLoop]: Abstraction has 8023 states and 12436 transitions. [2022-07-19 18:41:33,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:33,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8023 states and 12436 transitions. [2022-07-19 18:41:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-19 18:41:33,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:33,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:33,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:41:33,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:33,127 INFO L85 PathProgramCache]: Analyzing trace with hash 810173107, now seen corresponding path program 1 times [2022-07-19 18:41:33,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:33,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458767659] [2022-07-19 18:41:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:33,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:33,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:33,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458767659] [2022-07-19 18:41:33,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458767659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:33,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:33,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:41:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646002657] [2022-07-19 18:41:33,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:33,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:41:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:41:33,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:41:33,531 INFO L87 Difference]: Start difference. First operand 8023 states and 12436 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:34,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:34,419 INFO L93 Difference]: Finished difference Result 23750 states and 36773 transitions. [2022-07-19 18:41:34,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:41:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 314 [2022-07-19 18:41:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:34,479 INFO L225 Difference]: With dead ends: 23750 [2022-07-19 18:41:34,479 INFO L226 Difference]: Without dead ends: 15738 [2022-07-19 18:41:34,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:41:34,498 INFO L413 NwaCegarLoop]: 1939 mSDtfsCounter, 2793 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:34,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2793 Valid, 3102 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15738 states. [2022-07-19 18:41:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15738 to 15736. [2022-07-19 18:41:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15736 states, 15735 states have (on average 1.5411503018748014) internal successors, (24250), 15735 states have internal predecessors, (24250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15736 states to 15736 states and 24250 transitions. [2022-07-19 18:41:35,463 INFO L78 Accepts]: Start accepts. Automaton has 15736 states and 24250 transitions. Word has length 314 [2022-07-19 18:41:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:35,465 INFO L495 AbstractCegarLoop]: Abstraction has 15736 states and 24250 transitions. [2022-07-19 18:41:35,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 15736 states and 24250 transitions. [2022-07-19 18:41:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-19 18:41:35,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:35,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:35,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:41:35,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:35,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1891459364, now seen corresponding path program 1 times [2022-07-19 18:41:35,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:35,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626714170] [2022-07-19 18:41:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:35,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:35,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:35,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626714170] [2022-07-19 18:41:35,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626714170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:35,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:35,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:35,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002081238] [2022-07-19 18:41:35,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:35,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:35,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:35,608 INFO L87 Difference]: Start difference. First operand 15736 states and 24250 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:37,255 INFO L93 Difference]: Finished difference Result 46477 states and 71514 transitions. [2022-07-19 18:41:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:37,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 316 [2022-07-19 18:41:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:37,333 INFO L225 Difference]: With dead ends: 46477 [2022-07-19 18:41:37,334 INFO L226 Difference]: Without dead ends: 30866 [2022-07-19 18:41:37,369 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 [2022-07-19 18:41:37,370 INFO L413 NwaCegarLoop]: 2397 mSDtfsCounter, 1108 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:37,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 3570 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:41:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30866 states. [2022-07-19 18:41:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30866 to 30864. [2022-07-19 18:41:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30864 states, 30863 states have (on average 1.5319638401969997) internal successors, (47281), 30863 states have internal predecessors, (47281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30864 states to 30864 states and 47281 transitions. [2022-07-19 18:41:39,345 INFO L78 Accepts]: Start accepts. Automaton has 30864 states and 47281 transitions. Word has length 316 [2022-07-19 18:41:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:39,346 INFO L495 AbstractCegarLoop]: Abstraction has 30864 states and 47281 transitions. [2022-07-19 18:41:39,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 30864 states and 47281 transitions. [2022-07-19 18:41:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-19 18:41:39,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:39,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:39,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:41:39,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1765799017, now seen corresponding path program 1 times [2022-07-19 18:41:39,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:39,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496542048] [2022-07-19 18:41:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:39,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:39,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496542048] [2022-07-19 18:41:39,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496542048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:39,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:39,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:39,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137129497] [2022-07-19 18:41:39,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:39,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:39,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:39,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:39,472 INFO L87 Difference]: Start difference. First operand 30864 states and 47281 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:42,093 INFO L93 Difference]: Finished difference Result 92525 states and 141727 transitions. [2022-07-19 18:41:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 316 [2022-07-19 18:41:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:42,278 INFO L225 Difference]: With dead ends: 92525 [2022-07-19 18:41:42,278 INFO L226 Difference]: Without dead ends: 61699 [2022-07-19 18:41:42,345 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 [2022-07-19 18:41:42,346 INFO L413 NwaCegarLoop]: 2452 mSDtfsCounter, 1223 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:42,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 3676 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:41:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61699 states. [2022-07-19 18:41:44,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61699 to 30883. [2022-07-19 18:41:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30883 states, 30882 states have (on average 1.531927983938864) internal successors, (47309), 30882 states have internal predecessors, (47309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30883 states to 30883 states and 47309 transitions. [2022-07-19 18:41:44,533 INFO L78 Accepts]: Start accepts. Automaton has 30883 states and 47309 transitions. Word has length 316 [2022-07-19 18:41:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:44,534 INFO L495 AbstractCegarLoop]: Abstraction has 30883 states and 47309 transitions. [2022-07-19 18:41:44,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 30883 states and 47309 transitions. [2022-07-19 18:41:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-19 18:41:44,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:44,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:44,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:41:44,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash -906713469, now seen corresponding path program 1 times [2022-07-19 18:41:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:44,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319340840] [2022-07-19 18:41:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:44,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319340840] [2022-07-19 18:41:44,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319340840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:44,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:44,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:44,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349192044] [2022-07-19 18:41:44,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:44,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:44,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:44,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:44,655 INFO L87 Difference]: Start difference. First operand 30883 states and 47309 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:47,488 INFO L93 Difference]: Finished difference Result 92544 states and 141748 transitions. [2022-07-19 18:41:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 317 [2022-07-19 18:41:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:47,633 INFO L225 Difference]: With dead ends: 92544 [2022-07-19 18:41:47,633 INFO L226 Difference]: Without dead ends: 61717 [2022-07-19 18:41:47,697 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 [2022-07-19 18:41:47,698 INFO L413 NwaCegarLoop]: 2452 mSDtfsCounter, 1218 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:47,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 3676 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:41:47,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61717 states. [2022-07-19 18:41:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61717 to 30901. [2022-07-19 18:41:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30901 states, 30900 states have (on average 1.531715210355987) internal successors, (47330), 30900 states have internal predecessors, (47330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30901 states to 30901 states and 47330 transitions. [2022-07-19 18:41:49,886 INFO L78 Accepts]: Start accepts. Automaton has 30901 states and 47330 transitions. Word has length 317 [2022-07-19 18:41:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:49,886 INFO L495 AbstractCegarLoop]: Abstraction has 30901 states and 47330 transitions. [2022-07-19 18:41:49,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 30901 states and 47330 transitions. [2022-07-19 18:41:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-19 18:41:49,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:49,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:49,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:41:49,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1327805599, now seen corresponding path program 1 times [2022-07-19 18:41:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:49,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881042828] [2022-07-19 18:41:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:49,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:50,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:50,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881042828] [2022-07-19 18:41:50,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881042828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:50,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:50,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:50,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709500335] [2022-07-19 18:41:50,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:50,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:50,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:50,028 INFO L87 Difference]: Start difference. First operand 30901 states and 47330 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:53,133 INFO L93 Difference]: Finished difference Result 87742 states and 134155 transitions. [2022-07-19 18:41:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:53,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 318 [2022-07-19 18:41:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:53,243 INFO L225 Difference]: With dead ends: 87742 [2022-07-19 18:41:53,243 INFO L226 Difference]: Without dead ends: 57082 [2022-07-19 18:41:53,279 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 [2022-07-19 18:41:53,280 INFO L413 NwaCegarLoop]: 2404 mSDtfsCounter, 1102 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:53,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 3577 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57082 states. [2022-07-19 18:41:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57082 to 57080. [2022-07-19 18:41:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57080 states, 57079 states have (on average 1.5211548905902346) internal successors, (86826), 57079 states have internal predecessors, (86826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 86826 transitions. [2022-07-19 18:41:56,864 INFO L78 Accepts]: Start accepts. Automaton has 57080 states and 86826 transitions. Word has length 318 [2022-07-19 18:41:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:56,865 INFO L495 AbstractCegarLoop]: Abstraction has 57080 states and 86826 transitions. [2022-07-19 18:41:56,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 57080 states and 86826 transitions. [2022-07-19 18:41:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-19 18:41:56,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:56,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:56,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:41:56,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:41:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1728443076, now seen corresponding path program 1 times [2022-07-19 18:41:56,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:56,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781400631] [2022-07-19 18:41:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:57,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:57,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781400631] [2022-07-19 18:41:57,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781400631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:57,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:57,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:41:57,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081094633] [2022-07-19 18:41:57,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:57,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:41:57,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:57,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:41:57,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:41:57,175 INFO L87 Difference]: Start difference. First operand 57080 states and 86826 transitions. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:42:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:42:03,733 INFO L93 Difference]: Finished difference Result 168628 states and 256099 transitions. [2022-07-19 18:42:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:42:03,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 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 318 [2022-07-19 18:42:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:42:03,951 INFO L225 Difference]: With dead ends: 168628 [2022-07-19 18:42:03,951 INFO L226 Difference]: Without dead ends: 111603 [2022-07-19 18:42:04,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:42:04,024 INFO L413 NwaCegarLoop]: 1927 mSDtfsCounter, 2383 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:42:04,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 4253 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:42:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111603 states.