./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label12.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/eca-rers2012/Problem19_label12.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 20f7f4a3a6862c562e99af02cf6b3b1c1c648079a54dedf8628415d0c9277930 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:53:02,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:53:02,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:53:02,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:53:02,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:53:02,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:53:02,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:53:02,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:53:02,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:53:02,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:53:02,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:53:02,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:53:02,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:53:02,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:53:02,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:53:02,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:53:02,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:53:02,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:53:02,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:53:02,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:53:02,134 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:53:02,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:53:02,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:53:02,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:53:02,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:53:02,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:53:02,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:53:02,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:53:02,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:53:02,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:53:02,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:53:02,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:53:02,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:53:02,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:53:02,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:53:02,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:53:02,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:53:02,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:53:02,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:53:02,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:53:02,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:53:02,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:53:02,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:53:02,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:53:02,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:53:02,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:53:02,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:53:02,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:53:02,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:53:02,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:53:02,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:53:02,175 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:53:02,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:53:02,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:53:02,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:53:02,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:53:02,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:53:02,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:53:02,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:53:02,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:53:02,177 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:53:02,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:53:02,177 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:53:02,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:53:02,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:53:02,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:53:02,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:53:02,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:53:02,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:53:02,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:53:02,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:53:02,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:53:02,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:53:02,180 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:53:02,180 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:53:02,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:53:02,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20f7f4a3a6862c562e99af02cf6b3b1c1c648079a54dedf8628415d0c9277930 [2022-07-19 12:53:02,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:53:02,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:53:02,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:53:02,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:53:02,387 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:53:02,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label12.c [2022-07-19 12:53:02,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e88732539/9c8233efebad4534bf480b2c5b83618a/FLAGcf0b6c668 [2022-07-19 12:53:03,077 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:53:03,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label12.c [2022-07-19 12:53:03,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e88732539/9c8233efebad4534bf480b2c5b83618a/FLAGcf0b6c668 [2022-07-19 12:53:03,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e88732539/9c8233efebad4534bf480b2c5b83618a [2022-07-19 12:53:03,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:53:03,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:53:03,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:53:03,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:53:03,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:53:03,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:53:03" (1/1) ... [2022-07-19 12:53:03,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c7f55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:03, skipping insertion in model container [2022-07-19 12:53:03,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:53:03" (1/1) ... [2022-07-19 12:53:03,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:53:03,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:53:03,546 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/eca-rers2012/Problem19_label12.c[5900,5913] [2022-07-19 12:53:04,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:53:04,498 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:53:04,518 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/eca-rers2012/Problem19_label12.c[5900,5913] [2022-07-19 12:53:05,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:53:05,051 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:53:05,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05 WrapperNode [2022-07-19 12:53:05,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:53:05,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:53:05,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:53:05,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:53:05,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:05,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:05,765 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-19 12:53:05,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:53:05,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:53:05,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:53:05,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:53:05,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:05,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:05,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:05,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:06,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:06,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:06,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:06,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:53:06,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:53:06,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:53:06,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:53:06,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (1/1) ... [2022-07-19 12:53:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:53:06,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:53:06,693 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 12:53:06,752 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 12:53:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:53:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:53:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:53:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:53:06,906 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:53:06,918 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:53:12,459 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:53:12,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:53:12,471 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:53:12,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:53:12 BoogieIcfgContainer [2022-07-19 12:53:12,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:53:12,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:53:12,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:53:12,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:53:12,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:53:03" (1/3) ... [2022-07-19 12:53:12,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19052750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:53:12, skipping insertion in model container [2022-07-19 12:53:12,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:53:05" (2/3) ... [2022-07-19 12:53:12,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19052750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:53:12, skipping insertion in model container [2022-07-19 12:53:12,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:53:12" (3/3) ... [2022-07-19 12:53:12,479 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label12.c [2022-07-19 12:53:12,488 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:53:12,488 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:53:12,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:53:12,555 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@3cd18725, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e8fd34f [2022-07-19 12:53:12,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:53:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 12:53:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 12:53:12,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:12,577 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] [2022-07-19 12:53:12,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-07-19 12:53:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:12,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160372723] [2022-07-19 12:53:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:12,760 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 12:53:12,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:12,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160372723] [2022-07-19 12:53:12,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160372723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:12,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:12,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:53:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468605348] [2022-07-19 12:53:12,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:53:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:12,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:53:12,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:53:12,794 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:53:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:53:18,798 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2022-07-19 12:53:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:53:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-19 12:53:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:53:18,824 INFO L225 Difference]: With dead ends: 4975 [2022-07-19 12:53:18,824 INFO L226 Difference]: Without dead ends: 3163 [2022-07-19 12:53:18,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:53:18,834 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1502 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:53:18,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-19 12:53:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-07-19 12:53:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2022-07-19 12:53:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 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 12:53:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2022-07-19 12:53:18,957 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 44 [2022-07-19 12:53:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:53:18,957 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2022-07-19 12:53:18,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:53:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2022-07-19 12:53:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 12:53:18,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:18,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:53:18,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:53:18,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:18,962 INFO L85 PathProgramCache]: Analyzing trace with hash 146271981, now seen corresponding path program 1 times [2022-07-19 12:53:18,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:18,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304937573] [2022-07-19 12:53:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:18,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:53:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304937573] [2022-07-19 12:53:19,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304937573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:19,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:19,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:53:19,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218769104] [2022-07-19 12:53:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:19,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:53:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:19,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:53:19,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:53:19,073 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 12:53:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:53:24,710 INFO L93 Difference]: Finished difference Result 9053 states and 14813 transitions. [2022-07-19 12:53:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:53:24,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 115 [2022-07-19 12:53:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:53:24,735 INFO L225 Difference]: With dead ends: 9053 [2022-07-19 12:53:24,735 INFO L226 Difference]: Without dead ends: 5932 [2022-07-19 12:53:24,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:53:24,743 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 1534 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4265 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 4265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:53:24,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1544 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 4265 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-19 12:53:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2022-07-19 12:53:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5910. [2022-07-19 12:53:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.423421898798443) internal successors, (8411), 5909 states have internal predecessors, (8411), 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 12:53:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8411 transitions. [2022-07-19 12:53:24,822 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8411 transitions. Word has length 115 [2022-07-19 12:53:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:53:24,824 INFO L495 AbstractCegarLoop]: Abstraction has 5910 states and 8411 transitions. [2022-07-19 12:53:24,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 12:53:24,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8411 transitions. [2022-07-19 12:53:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 12:53:24,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:24,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:53:24,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1372303230, now seen corresponding path program 1 times [2022-07-19 12:53:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:24,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659912480] [2022-07-19 12:53:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:24,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:53:24,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:24,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659912480] [2022-07-19 12:53:24,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659912480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:24,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:24,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:53:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260849870] [2022-07-19 12:53:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:24,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:53:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:53:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:53:24,951 INFO L87 Difference]: Start difference. First operand 5910 states and 8411 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 12:53:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:53:30,316 INFO L93 Difference]: Finished difference Result 17505 states and 24942 transitions. [2022-07-19 12:53:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:53:30,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 141 [2022-07-19 12:53:30,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:53:30,357 INFO L225 Difference]: With dead ends: 17505 [2022-07-19 12:53:30,357 INFO L226 Difference]: Without dead ends: 11597 [2022-07-19 12:53:30,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:53:30,367 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4227 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 5657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:53:30,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 1806 Invalid, 5657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4227 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 12:53:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11597 states. [2022-07-19 12:53:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11597 to 11578. [2022-07-19 12:53:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 1.2801243845555843) internal successors, (14820), 11577 states have internal predecessors, (14820), 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 12:53:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 14820 transitions. [2022-07-19 12:53:30,529 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 14820 transitions. Word has length 141 [2022-07-19 12:53:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:53:30,530 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 14820 transitions. [2022-07-19 12:53:30,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 12:53:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 14820 transitions. [2022-07-19 12:53:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 12:53:30,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:30,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:53:30,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash 146126442, now seen corresponding path program 1 times [2022-07-19 12:53:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:30,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257501739] [2022-07-19 12:53:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:53:30,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:30,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257501739] [2022-07-19 12:53:30,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257501739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:30,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:30,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:53:30,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762619132] [2022-07-19 12:53:30,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:30,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:53:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:53:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:53:30,661 INFO L87 Difference]: Start difference. First operand 11578 states and 14820 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 12:53:36,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:53:36,743 INFO L93 Difference]: Finished difference Result 34273 states and 43832 transitions. [2022-07-19 12:53:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:53:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 149 [2022-07-19 12:53:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:53:36,782 INFO L225 Difference]: With dead ends: 34273 [2022-07-19 12:53:36,782 INFO L226 Difference]: Without dead ends: 22697 [2022-07-19 12:53:36,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:53:36,791 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 2497 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 5120 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:53:36,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2497 Valid, 995 Invalid, 5554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5120 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-19 12:53:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22697 states. [2022-07-19 12:53:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22697 to 22694. [2022-07-19 12:53:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22694 states, 22693 states have (on average 1.238663905168995) internal successors, (28109), 22693 states have internal predecessors, (28109), 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 12:53:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22694 states to 22694 states and 28109 transitions. [2022-07-19 12:53:37,053 INFO L78 Accepts]: Start accepts. Automaton has 22694 states and 28109 transitions. Word has length 149 [2022-07-19 12:53:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:53:37,054 INFO L495 AbstractCegarLoop]: Abstraction has 22694 states and 28109 transitions. [2022-07-19 12:53:37,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 12:53:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 22694 states and 28109 transitions. [2022-07-19 12:53:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-07-19 12:53:37,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:37,061 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:37,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:53:37,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash 853384660, now seen corresponding path program 1 times [2022-07-19 12:53:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:37,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658474423] [2022-07-19 12:53:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:37,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 12:53:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:37,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658474423] [2022-07-19 12:53:37,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658474423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:37,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:37,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:53:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103050385] [2022-07-19 12:53:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:37,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:53:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:53:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:53:37,325 INFO L87 Difference]: Start difference. First operand 22694 states and 28109 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 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 12:53:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:53:45,291 INFO L93 Difference]: Finished difference Result 57752 states and 69837 transitions. [2022-07-19 12:53:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:53:45,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 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 411 [2022-07-19 12:53:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:53:45,358 INFO L225 Difference]: With dead ends: 57752 [2022-07-19 12:53:45,359 INFO L226 Difference]: Without dead ends: 35060 [2022-07-19 12:53:45,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:53:45,384 INFO L413 NwaCegarLoop]: 1805 mSDtfsCounter, 3755 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 9454 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 9699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 9454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:53:45,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2160 Invalid, 9699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 9454 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 12:53:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35060 states. [2022-07-19 12:53:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35060 to 32288. [2022-07-19 12:53:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32288 states, 32287 states have (on average 1.1912844178771642) internal successors, (38463), 32287 states have internal predecessors, (38463), 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 12:53:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32288 states to 32288 states and 38463 transitions. [2022-07-19 12:53:45,888 INFO L78 Accepts]: Start accepts. Automaton has 32288 states and 38463 transitions. Word has length 411 [2022-07-19 12:53:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:53:45,889 INFO L495 AbstractCegarLoop]: Abstraction has 32288 states and 38463 transitions. [2022-07-19 12:53:45,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 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 12:53:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 32288 states and 38463 transitions. [2022-07-19 12:53:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-07-19 12:53:45,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:45,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:45,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:53:45,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash 310246318, now seen corresponding path program 1 times [2022-07-19 12:53:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:45,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903927615] [2022-07-19 12:53:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:45,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 12:53:46,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:46,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903927615] [2022-07-19 12:53:46,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903927615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:46,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:46,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:53:46,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029961647] [2022-07-19 12:53:46,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:46,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:53:46,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:46,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:53:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:53:46,103 INFO L87 Difference]: Start difference. First operand 32288 states and 38463 transitions. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 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 12:53:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:53:51,107 INFO L93 Difference]: Finished difference Result 67335 states and 79703 transitions. [2022-07-19 12:53:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:53:51,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 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 439 [2022-07-19 12:53:51,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:53:51,164 INFO L225 Difference]: With dead ends: 67335 [2022-07-19 12:53:51,164 INFO L226 Difference]: Without dead ends: 35018 [2022-07-19 12:53:51,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:53:51,193 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 1153 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:53:51,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1955 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-19 12:53:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35018 states. [2022-07-19 12:53:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35018 to 35018. [2022-07-19 12:53:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35018 states, 35017 states have (on average 1.1765142645000999) internal successors, (41198), 35017 states have internal predecessors, (41198), 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 12:53:51,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35018 states to 35018 states and 41198 transitions. [2022-07-19 12:53:51,536 INFO L78 Accepts]: Start accepts. Automaton has 35018 states and 41198 transitions. Word has length 439 [2022-07-19 12:53:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:53:51,536 INFO L495 AbstractCegarLoop]: Abstraction has 35018 states and 41198 transitions. [2022-07-19 12:53:51,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 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 12:53:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 35018 states and 41198 transitions. [2022-07-19 12:53:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-07-19 12:53:51,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:51,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:53:51,542 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:51,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash -385559628, now seen corresponding path program 1 times [2022-07-19 12:53:51,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:51,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475454331] [2022-07-19 12:53:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:53:51,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:51,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475454331] [2022-07-19 12:53:51,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475454331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:51,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:51,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:53:51,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650521929] [2022-07-19 12:53:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:51,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:53:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:53:51,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:53:51,716 INFO L87 Difference]: Start difference. First operand 35018 states and 41198 transitions. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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 12:53:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:53:57,235 INFO L93 Difference]: Finished difference Result 78377 states and 94558 transitions. [2022-07-19 12:53:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:53:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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 531 [2022-07-19 12:53:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:53:57,287 INFO L225 Difference]: With dead ends: 78377 [2022-07-19 12:53:57,287 INFO L226 Difference]: Without dead ends: 46091 [2022-07-19 12:53:57,313 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 12:53:57,316 INFO L413 NwaCegarLoop]: 2744 mSDtfsCounter, 1491 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4061 mSolverCounterSat, 1803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 5864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1803 IncrementalHoareTripleChecker+Valid, 4061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:53:57,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 2923 Invalid, 5864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1803 Valid, 4061 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 12:53:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46091 states. [2022-07-19 12:53:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46091 to 45986. [2022-07-19 12:53:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45986 states, 45985 states have (on average 1.167293682722627) internal successors, (53678), 45985 states have internal predecessors, (53678), 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 12:53:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45986 states to 45986 states and 53678 transitions. [2022-07-19 12:53:57,708 INFO L78 Accepts]: Start accepts. Automaton has 45986 states and 53678 transitions. Word has length 531 [2022-07-19 12:53:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:53:57,708 INFO L495 AbstractCegarLoop]: Abstraction has 45986 states and 53678 transitions. [2022-07-19 12:53:57,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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 12:53:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 45986 states and 53678 transitions. [2022-07-19 12:53:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2022-07-19 12:53:57,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:53:57,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:57,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:53:57,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:53:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:53:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash -925098164, now seen corresponding path program 1 times [2022-07-19 12:53:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:53:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257880437] [2022-07-19 12:53:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:53:57,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:53:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:53:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-19 12:53:57,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:53:57,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257880437] [2022-07-19 12:53:57,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257880437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:53:57,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:53:57,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:53:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680033478] [2022-07-19 12:53:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:53:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:53:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:53:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:53:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:53:57,967 INFO L87 Difference]: Start difference. First operand 45986 states and 53678 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 12:54:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:54:04,171 INFO L93 Difference]: Finished difference Result 104403 states and 124098 transitions. [2022-07-19 12:54:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:54:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 743 [2022-07-19 12:54:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:54:04,239 INFO L225 Difference]: With dead ends: 104403 [2022-07-19 12:54:04,240 INFO L226 Difference]: Without dead ends: 61149 [2022-07-19 12:54:04,255 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 12:54:04,256 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 1432 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5099 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 6069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 5099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:54:04,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 3373 Invalid, 6069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [970 Valid, 5099 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-19 12:54:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61149 states. [2022-07-19 12:54:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61149 to 61057. [2022-07-19 12:54:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61057 states, 61056 states have (on average 1.1519097222222223) internal successors, (70331), 61056 states have internal predecessors, (70331), 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 12:54:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61057 states to 61057 states and 70331 transitions. [2022-07-19 12:54:04,757 INFO L78 Accepts]: Start accepts. Automaton has 61057 states and 70331 transitions. Word has length 743 [2022-07-19 12:54:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:54:04,758 INFO L495 AbstractCegarLoop]: Abstraction has 61057 states and 70331 transitions. [2022-07-19 12:54:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 12:54:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 61057 states and 70331 transitions. [2022-07-19 12:54:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2022-07-19 12:54:04,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:54:04,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:04,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:54:04,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:54:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:54:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1491433903, now seen corresponding path program 1 times [2022-07-19 12:54:04,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:54:04,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580445976] [2022-07-19 12:54:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:04,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:54:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 83 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:54:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:54:05,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580445976] [2022-07-19 12:54:05,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580445976] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:54:05,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295357622] [2022-07-19 12:54:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:05,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:54:05,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:54:05,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:54:05,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:54:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:54:05,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:54:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-07-19 12:54:05,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:54:05,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295357622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:54:05,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:54:05,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-19 12:54:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246710677] [2022-07-19 12:54:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:54:05,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:54:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:54:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:54:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:54:05,533 INFO L87 Difference]: Start difference. First operand 61057 states and 70331 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 12:54:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:54:11,522 INFO L93 Difference]: Finished difference Result 135904 states and 158829 transitions. [2022-07-19 12:54:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:54:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 750 [2022-07-19 12:54:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:54:11,626 INFO L225 Difference]: With dead ends: 135904 [2022-07-19 12:54:11,626 INFO L226 Difference]: Without dead ends: 77579 [2022-07-19 12:54:11,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:54:11,671 INFO L413 NwaCegarLoop]: 3093 mSDtfsCounter, 1442 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 5007 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 5007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:54:11,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 3268 Invalid, 6011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 5007 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-19 12:54:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77579 states. [2022-07-19 12:54:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77579 to 76078. [2022-07-19 12:54:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76078 states, 76077 states have (on average 1.1446297829830303) internal successors, (87080), 76077 states have internal predecessors, (87080), 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 12:54:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76078 states to 76078 states and 87080 transitions. [2022-07-19 12:54:12,843 INFO L78 Accepts]: Start accepts. Automaton has 76078 states and 87080 transitions. Word has length 750 [2022-07-19 12:54:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:54:12,844 INFO L495 AbstractCegarLoop]: Abstraction has 76078 states and 87080 transitions. [2022-07-19 12:54:12,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 12:54:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 76078 states and 87080 transitions. [2022-07-19 12:54:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2022-07-19 12:54:12,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:54:12,855 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:12,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 12:54:13,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:54:13,063 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:54:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:54:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1124370534, now seen corresponding path program 1 times [2022-07-19 12:54:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:54:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721135464] [2022-07-19 12:54:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:54:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-07-19 12:54:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:54:13,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721135464] [2022-07-19 12:54:13,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721135464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:54:13,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:54:13,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:54:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446624304] [2022-07-19 12:54:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:54:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:54:13,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:54:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:54:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:54:13,370 INFO L87 Difference]: Start difference. First operand 76078 states and 87080 transitions. Second operand has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 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 12:54:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:54:23,632 INFO L93 Difference]: Finished difference Result 245284 states and 285310 transitions. [2022-07-19 12:54:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:54:23,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 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 951 [2022-07-19 12:54:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:54:23,834 INFO L225 Difference]: With dead ends: 245284 [2022-07-19 12:54:23,835 INFO L226 Difference]: Without dead ends: 171938 [2022-07-19 12:54:23,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:54:23,879 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 3367 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 8804 mSolverCounterSat, 2886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 11690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2886 IncrementalHoareTripleChecker+Valid, 8804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:54:23,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 1344 Invalid, 11690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2886 Valid, 8804 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-07-19 12:54:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171938 states. [2022-07-19 12:54:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171938 to 166294. [2022-07-19 12:54:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166294 states, 166293 states have (on average 1.13519510743086) internal successors, (188775), 166293 states have internal predecessors, (188775), 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 12:54:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166294 states to 166294 states and 188775 transitions. [2022-07-19 12:54:25,800 INFO L78 Accepts]: Start accepts. Automaton has 166294 states and 188775 transitions. Word has length 951 [2022-07-19 12:54:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:54:25,801 INFO L495 AbstractCegarLoop]: Abstraction has 166294 states and 188775 transitions. [2022-07-19 12:54:25,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 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 12:54:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 166294 states and 188775 transitions. [2022-07-19 12:54:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2022-07-19 12:54:25,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:54:25,813 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:25,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:54:25,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:54:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:54:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1377141707, now seen corresponding path program 1 times [2022-07-19 12:54:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:54:25,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672144379] [2022-07-19 12:54:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:54:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 583 proven. 218 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-19 12:54:26,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:54:26,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672144379] [2022-07-19 12:54:26,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672144379] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:54:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692118466] [2022-07-19 12:54:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:26,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:54:26,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:54:26,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:54:26,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 12:54:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:26,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:54:26,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:54:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2022-07-19 12:54:26,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:54:26,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692118466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:54:26,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:54:26,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-19 12:54:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938837800] [2022-07-19 12:54:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:54:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:54:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:54:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:54:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:54:26,935 INFO L87 Difference]: Start difference. First operand 166294 states and 188775 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 12:54:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:54:33,256 INFO L93 Difference]: Finished difference Result 376325 states and 428767 transitions. [2022-07-19 12:54:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:54:33,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 1001 [2022-07-19 12:54:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:54:33,524 INFO L225 Difference]: With dead ends: 376325 [2022-07-19 12:54:33,525 INFO L226 Difference]: Without dead ends: 212763 [2022-07-19 12:54:33,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 1000 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:54:33,742 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 1607 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 4195 mSolverCounterSat, 1468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 5663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1468 IncrementalHoareTripleChecker+Valid, 4195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:54:33,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1461 Invalid, 5663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1468 Valid, 4195 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 12:54:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212763 states. [2022-07-19 12:54:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212763 to 200433. [2022-07-19 12:54:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200433 states, 200432 states have (on average 1.1383810968308454) internal successors, (228168), 200432 states have internal predecessors, (228168), 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 12:54:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200433 states to 200433 states and 228168 transitions. [2022-07-19 12:54:36,134 INFO L78 Accepts]: Start accepts. Automaton has 200433 states and 228168 transitions. Word has length 1001 [2022-07-19 12:54:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:54:36,136 INFO L495 AbstractCegarLoop]: Abstraction has 200433 states and 228168 transitions. [2022-07-19 12:54:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 12:54:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 200433 states and 228168 transitions. [2022-07-19 12:54:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2022-07-19 12:54:36,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:54:36,157 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:36,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 12:54:36,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 12:54:36,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:54:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:54:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash -247920322, now seen corresponding path program 1 times [2022-07-19 12:54:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:54:36,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089396668] [2022-07-19 12:54:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:54:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 801 proven. 218 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-07-19 12:54:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:54:37,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089396668] [2022-07-19 12:54:37,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089396668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:54:37,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584838455] [2022-07-19 12:54:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:37,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:54:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:54:37,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:54:37,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 12:54:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:37,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:54:37,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:54:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-19 12:54:37,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:54:37,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584838455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:54:37,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:54:37,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-19 12:54:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456028592] [2022-07-19 12:54:37,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:54:37,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:54:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:54:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:54:37,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:54:37,530 INFO L87 Difference]: Start difference. First operand 200433 states and 228168 transitions. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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 12:54:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:54:44,327 INFO L93 Difference]: Finished difference Result 555098 states and 635618 transitions. [2022-07-19 12:54:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:54:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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 1110 [2022-07-19 12:54:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:54:44,837 INFO L225 Difference]: With dead ends: 555098 [2022-07-19 12:54:44,837 INFO L226 Difference]: Without dead ends: 342374 [2022-07-19 12:54:44,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 1109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:54:44,944 INFO L413 NwaCegarLoop]: 2858 mSDtfsCounter, 1467 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 3823 mSolverCounterSat, 1975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 5798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1975 IncrementalHoareTripleChecker+Valid, 3823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:54:44,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 2952 Invalid, 5798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1975 Valid, 3823 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 12:54:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342374 states. [2022-07-19 12:54:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342374 to 320511. [2022-07-19 12:54:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320511 states, 320510 states have (on average 1.1244547752020218) internal successors, (360399), 320510 states have internal predecessors, (360399), 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 12:54:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320511 states to 320511 states and 360399 transitions. [2022-07-19 12:54:48,719 INFO L78 Accepts]: Start accepts. Automaton has 320511 states and 360399 transitions. Word has length 1110 [2022-07-19 12:54:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:54:48,720 INFO L495 AbstractCegarLoop]: Abstraction has 320511 states and 360399 transitions. [2022-07-19 12:54:48,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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 12:54:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 320511 states and 360399 transitions. [2022-07-19 12:54:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2022-07-19 12:54:48,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:54:48,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:48,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 12:54:48,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:54:48,942 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:54:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:54:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash -809099099, now seen corresponding path program 1 times [2022-07-19 12:54:48,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:54:48,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523940458] [2022-07-19 12:54:48,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:54:48,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:54:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:54:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1313 backedges. 823 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-07-19 12:54:49,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:54:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523940458] [2022-07-19 12:54:49,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523940458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:54:49,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:54:49,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:54:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942946119] [2022-07-19 12:54:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:54:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:54:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:54:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:54:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:54:49,610 INFO L87 Difference]: Start difference. First operand 320511 states and 360399 transitions. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 2 states have internal predecessors, (690), 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 12:54:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:54:56,881 INFO L93 Difference]: Finished difference Result 733853 states and 833432 transitions. [2022-07-19 12:54:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:54:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 2 states have internal predecessors, (690), 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 1135 [2022-07-19 12:54:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:54:57,572 INFO L225 Difference]: With dead ends: 733853 [2022-07-19 12:54:57,572 INFO L226 Difference]: Without dead ends: 416074 [2022-07-19 12:54:57,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:54:57,743 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 1274 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3947 mSolverCounterSat, 2025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 5972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2025 IncrementalHoareTripleChecker+Valid, 3947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:54:57,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 1190 Invalid, 5972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2025 Valid, 3947 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-19 12:54:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416074 states. [2022-07-19 12:55:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416074 to 416056. [2022-07-19 12:55:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416056 states, 416055 states have (on average 1.133172296931896) internal successors, (471462), 416055 states have internal predecessors, (471462), 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 12:55:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416056 states to 416056 states and 471462 transitions. [2022-07-19 12:55:03,129 INFO L78 Accepts]: Start accepts. Automaton has 416056 states and 471462 transitions. Word has length 1135 [2022-07-19 12:55:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:03,129 INFO L495 AbstractCegarLoop]: Abstraction has 416056 states and 471462 transitions. [2022-07-19 12:55:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 2 states have internal predecessors, (690), 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 12:55:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 416056 states and 471462 transitions. [2022-07-19 12:55:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2022-07-19 12:55:03,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:03,145 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:03,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 12:55:03,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:03,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1322955534, now seen corresponding path program 1 times [2022-07-19 12:55:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:03,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667649879] [2022-07-19 12:55:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:03,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 469 proven. 485 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 12:55:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667649879] [2022-07-19 12:55:03,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667649879] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:55:03,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089700264] [2022-07-19 12:55:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:03,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:55:03,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:55:03,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:55:03,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 12:55:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:04,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:55:04,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:55:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-07-19 12:55:04,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:55:04,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089700264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:04,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:55:04,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-19 12:55:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226785442] [2022-07-19 12:55:04,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:04,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:55:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:55:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:55:04,404 INFO L87 Difference]: Start difference. First operand 416056 states and 471462 transitions. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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 12:55:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:11,951 INFO L93 Difference]: Finished difference Result 959072 states and 1082942 transitions. [2022-07-19 12:55:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:55:11,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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 1340 [2022-07-19 12:55:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:12,823 INFO L225 Difference]: With dead ends: 959072 [2022-07-19 12:55:12,823 INFO L226 Difference]: Without dead ends: 545748 [2022-07-19 12:55:13,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 1339 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:55:13,004 INFO L413 NwaCegarLoop]: 3093 mSDtfsCounter, 1266 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 3735 mSolverCounterSat, 1333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 5068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1333 IncrementalHoareTripleChecker+Valid, 3735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:13,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 3279 Invalid, 5068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1333 Valid, 3735 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 12:55:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545748 states.