./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/Problem14_label04.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 fbc8b86e86cd6737c503bef017b2b1abd25895fb1927b426e7290e477fc0b63c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 23:58:28,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 23:58:28,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 23:58:28,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 23:58:28,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 23:58:28,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 23:58:28,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 23:58:28,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 23:58:28,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 23:58:28,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 23:58:28,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 23:58:28,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 23:58:28,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 23:58:28,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 23:58:28,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 23:58:28,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 23:58:28,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 23:58:28,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 23:58:28,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 23:58:28,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 23:58:28,996 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 23:58:28,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 23:58:28,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 23:58:28,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 23:58:29,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 23:58:29,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 23:58:29,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 23:58:29,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 23:58:29,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 23:58:29,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 23:58:29,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 23:58:29,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 23:58:29,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 23:58:29,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 23:58:29,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 23:58:29,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 23:58:29,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 23:58:29,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 23:58:29,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 23:58:29,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 23:58:29,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 23:58:29,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 23:58:29,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 23:58:29,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 23:58:29,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 23:58:29,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 23:58:29,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 23:58:29,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 23:58:29,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 23:58:29,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 23:58:29,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 23:58:29,053 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 23:58:29,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 23:58:29,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 23:58:29,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 23:58:29,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 23:58:29,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 23:58:29,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 23:58:29,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 23:58:29,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 23:58:29,062 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 23:58:29,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 23:58:29,062 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 23:58:29,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 23:58:29,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 23:58:29,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 23:58:29,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 23:58:29,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:58:29,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 23:58:29,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 23:58:29,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 23:58:29,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 23:58:29,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 23:58:29,064 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 23:58:29,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 23:58:29,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 23:58:29,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbc8b86e86cd6737c503bef017b2b1abd25895fb1927b426e7290e477fc0b63c [2022-07-20 23:58:29,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 23:58:29,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 23:58:29,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 23:58:29,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 23:58:29,409 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 23:58:29,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label04.c [2022-07-20 23:58:29,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ec50204/27b624e37533451682441696e65a074c/FLAGa6cab4d39 [2022-07-20 23:58:29,982 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 23:58:29,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label04.c [2022-07-20 23:58:30,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ec50204/27b624e37533451682441696e65a074c/FLAGa6cab4d39 [2022-07-20 23:58:30,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ec50204/27b624e37533451682441696e65a074c [2022-07-20 23:58:30,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 23:58:30,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 23:58:30,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 23:58:30,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 23:58:30,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 23:58:30,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:58:30" (1/1) ... [2022-07-20 23:58:30,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ed63cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:30, skipping insertion in model container [2022-07-20 23:58:30,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:58:30" (1/1) ... [2022-07-20 23:58:30,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 23:58:30,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 23:58:30,791 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/Problem14_label04.c[5382,5395] [2022-07-20 23:58:30,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:58:30,954 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 23:58:30,971 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/Problem14_label04.c[5382,5395] [2022-07-20 23:58:31,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:58:31,046 INFO L208 MainTranslator]: Completed translation [2022-07-20 23:58:31,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31 WrapperNode [2022-07-20 23:58:31,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 23:58:31,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 23:58:31,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 23:58:31,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 23:58:31,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,144 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2022-07-20 23:58:31,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 23:58:31,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 23:58:31,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 23:58:31,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 23:58:31,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 23:58:31,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 23:58:31,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 23:58:31,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 23:58:31,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (1/1) ... [2022-07-20 23:58:31,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:58:31,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:31,280 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) [2022-07-20 23:58:31,302 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 [2022-07-20 23:58:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 23:58:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 23:58:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 23:58:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 23:58:31,379 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 23:58:31,381 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 23:58:32,476 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 23:58:32,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 23:58:32,488 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 23:58:32,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:58:32 BoogieIcfgContainer [2022-07-20 23:58:32,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 23:58:32,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 23:58:32,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 23:58:32,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 23:58:32,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:58:30" (1/3) ... [2022-07-20 23:58:32,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8094e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:58:32, skipping insertion in model container [2022-07-20 23:58:32,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:58:31" (2/3) ... [2022-07-20 23:58:32,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8094e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:58:32, skipping insertion in model container [2022-07-20 23:58:32,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:58:32" (3/3) ... [2022-07-20 23:58:32,497 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label04.c [2022-07-20 23:58:32,508 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 23:58:32,509 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 23:58:32,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 23:58:32,565 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@6ad1ed4f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f8d62dc [2022-07-20 23:58:32,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 23:58:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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) [2022-07-20 23:58:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-20 23:58:32,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:32,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:32,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:32,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1382487458, now seen corresponding path program 1 times [2022-07-20 23:58:32,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:32,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930331495] [2022-07-20 23:58:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:32,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:58:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930331495] [2022-07-20 23:58:32,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930331495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:32,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:32,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:32,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087350210] [2022-07-20 23:58:32,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:32,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:32,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:58:32,954 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-07-20 23:58:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:34,469 INFO L93 Difference]: Finished difference Result 850 states and 1558 transitions. [2022-07-20 23:58:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2022-07-20 23:58:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:34,484 INFO L225 Difference]: With dead ends: 850 [2022-07-20 23:58:34,484 INFO L226 Difference]: Without dead ends: 538 [2022-07-20 23:58:34,488 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 [2022-07-20 23:58:34,491 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 484 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:34,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 194 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-20 23:58:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-07-20 23:58:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2022-07-20 23:58:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.4487895716945995) internal successors, (778), 537 states have internal predecessors, (778), 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) [2022-07-20 23:58:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 778 transitions. [2022-07-20 23:58:34,550 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 778 transitions. Word has length 52 [2022-07-20 23:58:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:34,551 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 778 transitions. [2022-07-20 23:58:34,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-07-20 23:58:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 778 transitions. [2022-07-20 23:58:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-20 23:58:34,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:34,562 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, 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] [2022-07-20 23:58:34,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 23:58:34,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash 327314734, now seen corresponding path program 1 times [2022-07-20 23:58:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:34,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270399337] [2022-07-20 23:58:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:58:34,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:34,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270399337] [2022-07-20 23:58:34,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270399337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:34,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:34,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065043133] [2022-07-20 23:58:34,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:34,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:58:34,790 INFO L87 Difference]: Start difference. First operand 538 states and 778 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2022-07-20 23:58:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:35,525 INFO L93 Difference]: Finished difference Result 1281 states and 1978 transitions. [2022-07-20 23:58:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:35,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2022-07-20 23:58:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:35,530 INFO L225 Difference]: With dead ends: 1281 [2022-07-20 23:58:35,530 INFO L226 Difference]: Without dead ends: 894 [2022-07-20 23:58:35,532 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 [2022-07-20 23:58:35,533 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 118 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:35,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 119 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 23:58:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-07-20 23:58:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 716. [2022-07-20 23:58:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.220979020979021) internal successors, (873), 715 states have internal predecessors, (873), 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) [2022-07-20 23:58:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 873 transitions. [2022-07-20 23:58:35,559 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 873 transitions. Word has length 132 [2022-07-20 23:58:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:35,559 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 873 transitions. [2022-07-20 23:58:35,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2022-07-20 23:58:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 873 transitions. [2022-07-20 23:58:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-20 23:58:35,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:35,567 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:35,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 23:58:35,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash 138717315, now seen corresponding path program 1 times [2022-07-20 23:58:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:35,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063150208] [2022-07-20 23:58:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 99 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:58:35,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:35,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063150208] [2022-07-20 23:58:35,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063150208] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:35,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421069920] [2022-07-20 23:58:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:35,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:35,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:35,811 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) [2022-07-20 23:58:35,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 23:58:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:35,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:58:35,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-20 23:58:36,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:36,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421069920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:36,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:36,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-20 23:58:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313637153] [2022-07-20 23:58:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:36,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:36,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:36,011 INFO L87 Difference]: Start difference. First operand 716 states and 873 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-07-20 23:58:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:36,549 INFO L93 Difference]: Finished difference Result 1608 states and 2071 transitions. [2022-07-20 23:58:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 223 [2022-07-20 23:58:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:36,554 INFO L225 Difference]: With dead ends: 1608 [2022-07-20 23:58:36,554 INFO L226 Difference]: Without dead ends: 1072 [2022-07-20 23:58:36,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:36,557 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 131 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:36,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 85 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 23:58:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-07-20 23:58:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 894. [2022-07-20 23:58:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.211646136618141) internal successors, (1082), 893 states have internal predecessors, (1082), 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) [2022-07-20 23:58:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1082 transitions. [2022-07-20 23:58:36,578 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1082 transitions. Word has length 223 [2022-07-20 23:58:36,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:36,579 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1082 transitions. [2022-07-20 23:58:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-07-20 23:58:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1082 transitions. [2022-07-20 23:58:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-20 23:58:36,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:36,583 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:36,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 23:58:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:36,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 880914236, now seen corresponding path program 1 times [2022-07-20 23:58:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:36,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663164488] [2022-07-20 23:58:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:58:36,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:36,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663164488] [2022-07-20 23:58:36,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663164488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:36,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:36,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:36,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578192400] [2022-07-20 23:58:36,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:36,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:36,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:36,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:36,938 INFO L87 Difference]: Start difference. First operand 894 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2022-07-20 23:58:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:37,387 INFO L93 Difference]: Finished difference Result 1964 states and 2415 transitions. [2022-07-20 23:58:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 226 [2022-07-20 23:58:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:37,393 INFO L225 Difference]: With dead ends: 1964 [2022-07-20 23:58:37,393 INFO L226 Difference]: Without dead ends: 1250 [2022-07-20 23:58:37,394 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 [2022-07-20 23:58:37,397 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 111 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:37,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 58 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:37,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-07-20 23:58:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2022-07-20 23:58:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.1753402722177742) internal successors, (1468), 1249 states have internal predecessors, (1468), 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) [2022-07-20 23:58:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1468 transitions. [2022-07-20 23:58:37,420 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1468 transitions. Word has length 226 [2022-07-20 23:58:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:37,421 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1468 transitions. [2022-07-20 23:58:37,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2022-07-20 23:58:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1468 transitions. [2022-07-20 23:58:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-07-20 23:58:37,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:37,426 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, 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, 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] [2022-07-20 23:58:37,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 23:58:37,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash 142603424, now seen corresponding path program 1 times [2022-07-20 23:58:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:37,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819966799] [2022-07-20 23:58:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:37,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 228 proven. 130 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-20 23:58:37,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:37,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819966799] [2022-07-20 23:58:37,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819966799] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:37,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705796062] [2022-07-20 23:58:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:37,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:37,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:37,640 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) [2022-07-20 23:58:37,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 23:58:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:37,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:58:37,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-20 23:58:38,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:38,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705796062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:38,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:38,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-07-20 23:58:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332142338] [2022-07-20 23:58:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:38,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:38,181 INFO L87 Difference]: Start difference. First operand 1250 states and 1468 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-07-20 23:58:38,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:38,717 INFO L93 Difference]: Finished difference Result 2854 states and 3498 transitions. [2022-07-20 23:58:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 386 [2022-07-20 23:58:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:38,726 INFO L225 Difference]: With dead ends: 2854 [2022-07-20 23:58:38,726 INFO L226 Difference]: Without dead ends: 1962 [2022-07-20 23:58:38,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:38,730 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 65 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:38,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 47 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 23:58:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-07-20 23:58:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2022-07-20 23:58:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.1662417134115248) internal successors, (2287), 1961 states have internal predecessors, (2287), 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) [2022-07-20 23:58:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2287 transitions. [2022-07-20 23:58:38,770 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2287 transitions. Word has length 386 [2022-07-20 23:58:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:38,771 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2287 transitions. [2022-07-20 23:58:38,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-07-20 23:58:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2287 transitions. [2022-07-20 23:58:38,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-07-20 23:58:38,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:38,779 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, 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, 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] [2022-07-20 23:58:38,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:38,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:38,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1255761555, now seen corresponding path program 1 times [2022-07-20 23:58:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:38,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195035966] [2022-07-20 23:58:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:38,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-20 23:58:39,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:39,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195035966] [2022-07-20 23:58:39,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195035966] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:39,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382949165] [2022-07-20 23:58:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:39,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:39,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:39,202 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) [2022-07-20 23:58:39,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 23:58:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:39,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:58:39,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-07-20 23:58:39,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:39,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382949165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:39,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:39,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-20 23:58:39,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646556719] [2022-07-20 23:58:39,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:39,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:39,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:58:39,771 INFO L87 Difference]: Start difference. First operand 1962 states and 2287 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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) [2022-07-20 23:58:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:40,232 INFO L93 Difference]: Finished difference Result 2854 states and 3290 transitions. [2022-07-20 23:58:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:40,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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 432 [2022-07-20 23:58:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:40,243 INFO L225 Difference]: With dead ends: 2854 [2022-07-20 23:58:40,243 INFO L226 Difference]: Without dead ends: 2852 [2022-07-20 23:58:40,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:58:40,245 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:40,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:40,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2022-07-20 23:58:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1784. [2022-07-20 23:58:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.1402131239484015) internal successors, (2033), 1783 states have internal predecessors, (2033), 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) [2022-07-20 23:58:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2033 transitions. [2022-07-20 23:58:40,279 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2033 transitions. Word has length 432 [2022-07-20 23:58:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:40,280 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2033 transitions. [2022-07-20 23:58:40,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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) [2022-07-20 23:58:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2033 transitions. [2022-07-20 23:58:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-07-20 23:58:40,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:40,287 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:40,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:40,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:40,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash -35807260, now seen corresponding path program 1 times [2022-07-20 23:58:40,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:40,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671608080] [2022-07-20 23:58:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 23:58:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:40,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671608080] [2022-07-20 23:58:40,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671608080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:40,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:40,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96403569] [2022-07-20 23:58:40,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:40,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:40,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:58:40,682 INFO L87 Difference]: Start difference. First operand 1784 states and 2033 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-07-20 23:58:41,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:41,257 INFO L93 Difference]: Finished difference Result 3417 states and 3936 transitions. [2022-07-20 23:58:41,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 434 [2022-07-20 23:58:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:41,264 INFO L225 Difference]: With dead ends: 3417 [2022-07-20 23:58:41,264 INFO L226 Difference]: Without dead ends: 1962 [2022-07-20 23:58:41,266 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 [2022-07-20 23:58:41,266 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 125 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:41,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 17 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 23:58:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-07-20 23:58:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2022-07-20 23:58:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.089736399326977) internal successors, (1943), 1783 states have internal predecessors, (1943), 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) [2022-07-20 23:58:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 1943 transitions. [2022-07-20 23:58:41,294 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 1943 transitions. Word has length 434 [2022-07-20 23:58:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:41,294 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 1943 transitions. [2022-07-20 23:58:41,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-07-20 23:58:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 1943 transitions. [2022-07-20 23:58:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-07-20 23:58:41,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:41,301 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:41,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 23:58:41,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1854062487, now seen corresponding path program 1 times [2022-07-20 23:58:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:41,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058537642] [2022-07-20 23:58:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-20 23:58:41,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:41,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058537642] [2022-07-20 23:58:41,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058537642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:41,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:41,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117073323] [2022-07-20 23:58:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:41,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:41,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:41,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:41,469 INFO L87 Difference]: Start difference. First operand 1784 states and 1943 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-07-20 23:58:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:41,932 INFO L93 Difference]: Finished difference Result 3922 states and 4347 transitions. [2022-07-20 23:58:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:41,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 445 [2022-07-20 23:58:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:41,940 INFO L225 Difference]: With dead ends: 3922 [2022-07-20 23:58:41,940 INFO L226 Difference]: Without dead ends: 2496 [2022-07-20 23:58:41,941 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 [2022-07-20 23:58:41,942 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:41,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 202 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-07-20 23:58:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2496. [2022-07-20 23:58:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.092184368737475) internal successors, (2725), 2495 states have internal predecessors, (2725), 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) [2022-07-20 23:58:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2725 transitions. [2022-07-20 23:58:41,979 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2725 transitions. Word has length 445 [2022-07-20 23:58:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:41,980 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 2725 transitions. [2022-07-20 23:58:41,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-07-20 23:58:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2725 transitions. [2022-07-20 23:58:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-20 23:58:41,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:41,987 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, 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, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:41,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 23:58:41,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1718197722, now seen corresponding path program 1 times [2022-07-20 23:58:41,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:41,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192530580] [2022-07-20 23:58:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-20 23:58:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:42,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192530580] [2022-07-20 23:58:42,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192530580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:42,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:42,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508487420] [2022-07-20 23:58:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:42,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:42,147 INFO L87 Difference]: Start difference. First operand 2496 states and 2725 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2022-07-20 23:58:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:42,625 INFO L93 Difference]: Finished difference Result 5880 states and 6513 transitions. [2022-07-20 23:58:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 486 [2022-07-20 23:58:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:42,638 INFO L225 Difference]: With dead ends: 5880 [2022-07-20 23:58:42,638 INFO L226 Difference]: Without dead ends: 3742 [2022-07-20 23:58:42,641 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 [2022-07-20 23:58:42,643 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:42,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 50 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-07-20 23:58:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2022-07-20 23:58:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.0828655439722) internal successors, (4051), 3741 states have internal predecessors, (4051), 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) [2022-07-20 23:58:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4051 transitions. [2022-07-20 23:58:42,696 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4051 transitions. Word has length 486 [2022-07-20 23:58:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:42,697 INFO L495 AbstractCegarLoop]: Abstraction has 3742 states and 4051 transitions. [2022-07-20 23:58:42,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2022-07-20 23:58:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4051 transitions. [2022-07-20 23:58:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-07-20 23:58:42,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:42,710 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:42,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 23:58:42,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1589037133, now seen corresponding path program 1 times [2022-07-20 23:58:42,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:42,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267285438] [2022-07-20 23:58:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:42,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 685 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-07-20 23:58:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267285438] [2022-07-20 23:58:42,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267285438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:42,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:42,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:42,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598710115] [2022-07-20 23:58:42,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:42,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:42,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:42,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:42,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:42,903 INFO L87 Difference]: Start difference. First operand 3742 states and 4051 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-07-20 23:58:43,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:43,357 INFO L93 Difference]: Finished difference Result 6948 states and 7546 transitions. [2022-07-20 23:58:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:43,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 522 [2022-07-20 23:58:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:43,369 INFO L225 Difference]: With dead ends: 6948 [2022-07-20 23:58:43,369 INFO L226 Difference]: Without dead ends: 3564 [2022-07-20 23:58:43,373 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 [2022-07-20 23:58:43,373 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 103 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:43,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 242 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2022-07-20 23:58:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3208. [2022-07-20 23:58:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.078578110383536) internal successors, (3459), 3207 states have internal predecessors, (3459), 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) [2022-07-20 23:58:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3459 transitions. [2022-07-20 23:58:43,439 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3459 transitions. Word has length 522 [2022-07-20 23:58:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:43,439 INFO L495 AbstractCegarLoop]: Abstraction has 3208 states and 3459 transitions. [2022-07-20 23:58:43,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-07-20 23:58:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3459 transitions. [2022-07-20 23:58:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-07-20 23:58:43,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:43,444 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:43,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 23:58:43,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1310836641, now seen corresponding path program 1 times [2022-07-20 23:58:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245388795] [2022-07-20 23:58:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 892 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-20 23:58:43,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:43,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245388795] [2022-07-20 23:58:43,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245388795] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:43,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160463195] [2022-07-20 23:58:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:43,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:43,713 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) [2022-07-20 23:58:43,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 23:58:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:43,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 23:58:43,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 892 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-20 23:58:44,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 23:58:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 892 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-20 23:58:44,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160463195] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 23:58:44,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 23:58:44,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-20 23:58:44,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687475352] [2022-07-20 23:58:44,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 23:58:44,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 23:58:44,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 23:58:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:44,452 INFO L87 Difference]: Start difference. First operand 3208 states and 3459 transitions. Second operand has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 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) [2022-07-20 23:58:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:45,324 INFO L93 Difference]: Finished difference Result 7482 states and 8139 transitions. [2022-07-20 23:58:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 23:58:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 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 641 [2022-07-20 23:58:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:45,342 INFO L225 Difference]: With dead ends: 7482 [2022-07-20 23:58:45,342 INFO L226 Difference]: Without dead ends: 4632 [2022-07-20 23:58:45,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:45,346 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 361 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:45,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 64 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-20 23:58:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2022-07-20 23:58:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4276. [2022-07-20 23:58:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 1.0776608187134502) internal successors, (4607), 4275 states have internal predecessors, (4607), 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) [2022-07-20 23:58:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4607 transitions. [2022-07-20 23:58:45,416 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4607 transitions. Word has length 641 [2022-07-20 23:58:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:45,417 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 4607 transitions. [2022-07-20 23:58:45,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 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) [2022-07-20 23:58:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4607 transitions. [2022-07-20 23:58:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2022-07-20 23:58:45,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:45,423 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:45,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:45,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2043682623, now seen corresponding path program 1 times [2022-07-20 23:58:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:45,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524858215] [2022-07-20 23:58:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:45,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 1038 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-07-20 23:58:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524858215] [2022-07-20 23:58:45,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524858215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:45,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:45,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:45,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841836012] [2022-07-20 23:58:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:45,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:45,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:45,872 INFO L87 Difference]: Start difference. First operand 4276 states and 4607 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2022-07-20 23:58:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:46,323 INFO L93 Difference]: Finished difference Result 9618 states and 10448 transitions. [2022-07-20 23:58:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:46,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 713 [2022-07-20 23:58:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:46,355 INFO L225 Difference]: With dead ends: 9618 [2022-07-20 23:58:46,356 INFO L226 Difference]: Without dead ends: 5700 [2022-07-20 23:58:46,361 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 [2022-07-20 23:58:46,361 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 110 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:46,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 37 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2022-07-20 23:58:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5344. [2022-07-20 23:58:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.078420363091896) internal successors, (5762), 5343 states have internal predecessors, (5762), 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) [2022-07-20 23:58:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5762 transitions. [2022-07-20 23:58:46,477 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5762 transitions. Word has length 713 [2022-07-20 23:58:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:46,478 INFO L495 AbstractCegarLoop]: Abstraction has 5344 states and 5762 transitions. [2022-07-20 23:58:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2022-07-20 23:58:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5762 transitions. [2022-07-20 23:58:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2022-07-20 23:58:46,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:46,485 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:46,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 23:58:46,485 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:46,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1828962068, now seen corresponding path program 1 times [2022-07-20 23:58:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:46,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750339508] [2022-07-20 23:58:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 1146 proven. 93 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-07-20 23:58:46,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:46,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750339508] [2022-07-20 23:58:46,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750339508] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:46,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414224956] [2022-07-20 23:58:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:46,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:46,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:46,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:58:46,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-20 23:58:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:46,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 23:58:46,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 1239 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-07-20 23:58:47,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:47,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414224956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:47,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:47,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-20 23:58:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776609676] [2022-07-20 23:58:47,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:47,505 INFO L87 Difference]: Start difference. First operand 5344 states and 5762 transitions. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2022-07-20 23:58:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:47,962 INFO L93 Difference]: Finished difference Result 10864 states and 11716 transitions. [2022-07-20 23:58:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:47,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 731 [2022-07-20 23:58:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:47,972 INFO L225 Difference]: With dead ends: 10864 [2022-07-20 23:58:47,972 INFO L226 Difference]: Without dead ends: 5878 [2022-07-20 23:58:47,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:47,978 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:47,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2022-07-20 23:58:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5522. [2022-07-20 23:58:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 5521 states have (on average 1.0760731751494295) internal successors, (5941), 5521 states have internal predecessors, (5941), 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) [2022-07-20 23:58:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 5941 transitions. [2022-07-20 23:58:48,050 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 5941 transitions. Word has length 731 [2022-07-20 23:58:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:48,051 INFO L495 AbstractCegarLoop]: Abstraction has 5522 states and 5941 transitions. [2022-07-20 23:58:48,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2022-07-20 23:58:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 5941 transitions. [2022-07-20 23:58:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2022-07-20 23:58:48,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:48,058 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:48,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-20 23:58:48,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-20 23:58:48,279 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:48,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1867062169, now seen corresponding path program 1 times [2022-07-20 23:58:48,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:48,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458009038] [2022-07-20 23:58:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:48,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-07-20 23:58:48,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:48,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458009038] [2022-07-20 23:58:48,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458009038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:48,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:48,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:48,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063494636] [2022-07-20 23:58:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:48,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:48,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:48,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:48,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:48,567 INFO L87 Difference]: Start difference. First operand 5522 states and 5941 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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) [2022-07-20 23:58:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:48,982 INFO L93 Difference]: Finished difference Result 10864 states and 11735 transitions. [2022-07-20 23:58:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 758 [2022-07-20 23:58:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:48,992 INFO L225 Difference]: With dead ends: 10864 [2022-07-20 23:58:48,993 INFO L226 Difference]: Without dead ends: 5700 [2022-07-20 23:58:48,998 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 [2022-07-20 23:58:48,998 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:48,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 227 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2022-07-20 23:58:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5700. [2022-07-20 23:58:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5699 states have (on average 1.0701877522372345) internal successors, (6099), 5699 states have internal predecessors, (6099), 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) [2022-07-20 23:58:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 6099 transitions. [2022-07-20 23:58:49,102 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 6099 transitions. Word has length 758 [2022-07-20 23:58:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:49,103 INFO L495 AbstractCegarLoop]: Abstraction has 5700 states and 6099 transitions. [2022-07-20 23:58:49,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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) [2022-07-20 23:58:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 6099 transitions. [2022-07-20 23:58:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2022-07-20 23:58:49,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:49,112 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:49,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 23:58:49,112 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash -540711606, now seen corresponding path program 1 times [2022-07-20 23:58:49,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:49,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980796763] [2022-07-20 23:58:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:49,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 1215 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-07-20 23:58:49,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:49,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980796763] [2022-07-20 23:58:49,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980796763] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:49,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110248480] [2022-07-20 23:58:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:49,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:49,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:49,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:58:49,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-20 23:58:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:49,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 23:58:49,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2022-07-20 23:58:50,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:50,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110248480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:50,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:50,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-20 23:58:50,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203582633] [2022-07-20 23:58:50,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:50,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-20 23:58:50,471 INFO L87 Difference]: Start difference. First operand 5700 states and 6099 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2022-07-20 23:58:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:50,978 INFO L93 Difference]: Finished difference Result 7532 states and 8149 transitions. [2022-07-20 23:58:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 808 [2022-07-20 23:58:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:50,993 INFO L225 Difference]: With dead ends: 7532 [2022-07-20 23:58:50,993 INFO L226 Difference]: Without dead ends: 7530 [2022-07-20 23:58:50,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-20 23:58:50,997 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 87 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 282 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:50,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 47 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 445 Invalid, 0 Unknown, 282 Unchecked, 0.5s Time] [2022-07-20 23:58:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2022-07-20 23:58:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7352. [2022-07-20 23:58:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 7351 states have (on average 1.0835260508774316) internal successors, (7965), 7351 states have internal predecessors, (7965), 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) [2022-07-20 23:58:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 7965 transitions. [2022-07-20 23:58:51,109 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 7965 transitions. Word has length 808 [2022-07-20 23:58:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:51,110 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 7965 transitions. [2022-07-20 23:58:51,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2022-07-20 23:58:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 7965 transitions. [2022-07-20 23:58:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2022-07-20 23:58:51,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:51,118 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:51,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:51,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-20 23:58:51,343 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash -172725225, now seen corresponding path program 1 times [2022-07-20 23:58:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:51,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200573502] [2022-07-20 23:58:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:51,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1954 backedges. 837 proven. 2 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2022-07-20 23:58:51,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:51,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200573502] [2022-07-20 23:58:51,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200573502] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:51,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742451448] [2022-07-20 23:58:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:51,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:51,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:58:51,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-20 23:58:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:51,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:58:51,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1954 backedges. 839 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2022-07-20 23:58:52,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:52,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742451448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:52,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:52,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-20 23:58:52,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377901780] [2022-07-20 23:58:52,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:52,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:52,083 INFO L87 Difference]: Start difference. First operand 7352 states and 7965 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2022-07-20 23:58:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:52,561 INFO L93 Difference]: Finished difference Result 14702 states and 15940 transitions. [2022-07-20 23:58:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 810 [2022-07-20 23:58:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:52,575 INFO L225 Difference]: With dead ends: 14702 [2022-07-20 23:58:52,575 INFO L226 Difference]: Without dead ends: 7708 [2022-07-20 23:58:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 813 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:52,581 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:52,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 245 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:58:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7708 states. [2022-07-20 23:58:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7708 to 7174. [2022-07-20 23:58:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7174 states, 7173 states have (on average 1.0770946605325527) internal successors, (7726), 7173 states have internal predecessors, (7726), 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) [2022-07-20 23:58:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7174 states to 7174 states and 7726 transitions. [2022-07-20 23:58:52,669 INFO L78 Accepts]: Start accepts. Automaton has 7174 states and 7726 transitions. Word has length 810 [2022-07-20 23:58:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:52,670 INFO L495 AbstractCegarLoop]: Abstraction has 7174 states and 7726 transitions. [2022-07-20 23:58:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2022-07-20 23:58:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7174 states and 7726 transitions. [2022-07-20 23:58:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2022-07-20 23:58:52,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:52,678 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:52,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-20 23:58:52,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:52,892 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:52,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:52,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2108387026, now seen corresponding path program 1 times [2022-07-20 23:58:52,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:52,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040571162] [2022-07-20 23:58:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:52,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 1251 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-07-20 23:58:53,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:53,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040571162] [2022-07-20 23:58:53,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040571162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:53,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591533937] [2022-07-20 23:58:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:53,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:53,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:53,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:58:53,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-20 23:58:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:53,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 23:58:53,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 964 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2022-07-20 23:58:54,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:54,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591533937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:54,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:54,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-20 23:58:54,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161198439] [2022-07-20 23:58:54,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:54,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:54,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:54,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-20 23:58:54,079 INFO L87 Difference]: Start difference. First operand 7174 states and 7726 transitions. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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) [2022-07-20 23:58:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:54,575 INFO L93 Difference]: Finished difference Result 7760 states and 8334 transitions. [2022-07-20 23:58:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 841 [2022-07-20 23:58:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:54,587 INFO L225 Difference]: With dead ends: 7760 [2022-07-20 23:58:54,587 INFO L226 Difference]: Without dead ends: 7758 [2022-07-20 23:58:54,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-20 23:58:54,590 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 55 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:54,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 46 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 445 Invalid, 0 Unknown, 298 Unchecked, 0.5s Time] [2022-07-20 23:58:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2022-07-20 23:58:54,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 7174. [2022-07-20 23:58:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7174 states, 7173 states have (on average 1.0770946605325527) internal successors, (7726), 7173 states have internal predecessors, (7726), 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) [2022-07-20 23:58:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7174 states to 7174 states and 7726 transitions. [2022-07-20 23:58:54,706 INFO L78 Accepts]: Start accepts. Automaton has 7174 states and 7726 transitions. Word has length 841 [2022-07-20 23:58:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:54,708 INFO L495 AbstractCegarLoop]: Abstraction has 7174 states and 7726 transitions. [2022-07-20 23:58:54,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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) [2022-07-20 23:58:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7174 states and 7726 transitions. [2022-07-20 23:58:54,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2022-07-20 23:58:54,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:54,722 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:54,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-20 23:58:54,936 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1692043947, now seen corresponding path program 1 times [2022-07-20 23:58:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:54,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838260813] [2022-07-20 23:58:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 1252 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-07-20 23:58:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:55,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838260813] [2022-07-20 23:58:55,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838260813] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:55,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458525586] [2022-07-20 23:58:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:55,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:55,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:55,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:58:55,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-20 23:58:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 23:58:55,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 1340 proven. 537 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-07-20 23:58:57,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 23:59:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 1324 proven. 0 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-07-20 23:59:02,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458525586] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:02,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-20 23:59:02,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 13 [2022-07-20 23:59:02,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302181443] [2022-07-20 23:59:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 23:59:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 23:59:02,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=99, Unknown=1, NotChecked=0, Total=156 [2022-07-20 23:59:02,787 INFO L87 Difference]: Start difference. First operand 7174 states and 7726 transitions. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2022-07-20 23:59:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:03,400 INFO L93 Difference]: Finished difference Result 14456 states and 15578 transitions. [2022-07-20 23:59:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:59:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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 842 [2022-07-20 23:59:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:03,414 INFO L225 Difference]: With dead ends: 14456 [2022-07-20 23:59:03,414 INFO L226 Difference]: Without dead ends: 7640 [2022-07-20 23:59:03,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1687 GetRequests, 1676 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=56, Invalid=99, Unknown=1, NotChecked=0, Total=156 [2022-07-20 23:59:03,421 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 131 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:03,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 69 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 571 Invalid, 0 Unknown, 231 Unchecked, 0.6s Time] [2022-07-20 23:59:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2022-07-20 23:59:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 7390. [2022-07-20 23:59:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7390 states, 7389 states have (on average 1.0755176613885506) internal successors, (7947), 7389 states have internal predecessors, (7947), 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) [2022-07-20 23:59:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 7947 transitions. [2022-07-20 23:59:03,532 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 7947 transitions. Word has length 842 [2022-07-20 23:59:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:03,533 INFO L495 AbstractCegarLoop]: Abstraction has 7390 states and 7947 transitions. [2022-07-20 23:59:03,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2022-07-20 23:59:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 7947 transitions. [2022-07-20 23:59:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2022-07-20 23:59:03,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:03,541 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:03,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:03,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-20 23:59:03,765 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1769411558, now seen corresponding path program 1 times [2022-07-20 23:59:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:03,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643160241] [2022-07-20 23:59:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:03,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 1259 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-07-20 23:59:04,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:04,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643160241] [2022-07-20 23:59:04,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643160241] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:04,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393515645] [2022-07-20 23:59:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:04,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:04,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:04,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:04,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-20 23:59:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:04,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 23:59:04,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 1340 proven. 544 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-07-20 23:59:04,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 23:59:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 1331 proven. 0 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-07-20 23:59:05,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393515645] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:05,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-20 23:59:05,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 13 [2022-07-20 23:59:05,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788226048] [2022-07-20 23:59:05,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:05,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 23:59:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 23:59:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-07-20 23:59:05,504 INFO L87 Difference]: Start difference. First operand 7390 states and 7947 transitions. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2022-07-20 23:59:06,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:06,137 INFO L93 Difference]: Finished difference Result 14778 states and 15913 transitions. [2022-07-20 23:59:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:59:06,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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 849 [2022-07-20 23:59:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:06,148 INFO L225 Difference]: With dead ends: 14778 [2022-07-20 23:59:06,149 INFO L226 Difference]: Without dead ends: 7746 [2022-07-20 23:59:06,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1690 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-07-20 23:59:06,155 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 287 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:06,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 10 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 23:59:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7746 states. [2022-07-20 23:59:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7746 to 7390. [2022-07-20 23:59:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7390 states, 7389 states have (on average 1.0755176613885506) internal successors, (7947), 7389 states have internal predecessors, (7947), 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) [2022-07-20 23:59:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 7947 transitions. [2022-07-20 23:59:06,250 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 7947 transitions. Word has length 849 [2022-07-20 23:59:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:06,251 INFO L495 AbstractCegarLoop]: Abstraction has 7390 states and 7947 transitions. [2022-07-20 23:59:06,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2022-07-20 23:59:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 7947 transitions. [2022-07-20 23:59:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2022-07-20 23:59:06,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:06,259 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:06,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:06,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:06,488 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash 725789310, now seen corresponding path program 1 times [2022-07-20 23:59:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:06,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241446374] [2022-07-20 23:59:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2264 backedges. 1270 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-20 23:59:06,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:06,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241446374] [2022-07-20 23:59:06,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241446374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:06,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:06,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:59:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650665086] [2022-07-20 23:59:06,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:06,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:59:06,790 INFO L87 Difference]: Start difference. First operand 7390 states and 7947 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-07-20 23:59:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:07,228 INFO L93 Difference]: Finished difference Result 14600 states and 15723 transitions. [2022-07-20 23:59:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:07,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 853 [2022-07-20 23:59:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:07,236 INFO L225 Difference]: With dead ends: 14600 [2022-07-20 23:59:07,237 INFO L226 Difference]: Without dead ends: 7568 [2022-07-20 23:59:07,242 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 [2022-07-20 23:59:07,243 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:07,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 226 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:59:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7568 states. [2022-07-20 23:59:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7568 to 7390. [2022-07-20 23:59:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7390 states, 7389 states have (on average 1.0691568547841386) internal successors, (7900), 7389 states have internal predecessors, (7900), 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) [2022-07-20 23:59:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 7900 transitions. [2022-07-20 23:59:07,325 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 7900 transitions. Word has length 853 [2022-07-20 23:59:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:07,326 INFO L495 AbstractCegarLoop]: Abstraction has 7390 states and 7900 transitions. [2022-07-20 23:59:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-07-20 23:59:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 7900 transitions. [2022-07-20 23:59:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2022-07-20 23:59:07,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:07,335 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:07,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 23:59:07,336 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash 460020198, now seen corresponding path program 1 times [2022-07-20 23:59:07,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:07,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716125492] [2022-07-20 23:59:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:07,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2763 backedges. 881 proven. 0 refuted. 0 times theorem prover too weak. 1882 trivial. 0 not checked. [2022-07-20 23:59:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:07,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716125492] [2022-07-20 23:59:07,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716125492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:07,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:07,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 23:59:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431720155] [2022-07-20 23:59:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 23:59:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 23:59:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 23:59:07,677 INFO L87 Difference]: Start difference. First operand 7390 states and 7900 transitions. Second operand has 7 states, 7 states have (on average 43.0) internal successors, (301), 6 states have internal predecessors, (301), 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) [2022-07-20 23:59:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:08,404 INFO L93 Difference]: Finished difference Result 14266 states and 15259 transitions. [2022-07-20 23:59:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 23:59:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.0) internal successors, (301), 6 states have internal predecessors, (301), 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 877 [2022-07-20 23:59:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:08,409 INFO L225 Difference]: With dead ends: 14266 [2022-07-20 23:59:08,409 INFO L226 Difference]: Without dead ends: 7134 [2022-07-20 23:59:08,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 23:59:08,414 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 96 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:08,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 33 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 23:59:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-07-20 23:59:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7034. [2022-07-20 23:59:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 1.0629887672401535) internal successors, (7476), 7033 states have internal predecessors, (7476), 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) [2022-07-20 23:59:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 7476 transitions. [2022-07-20 23:59:08,481 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 7476 transitions. Word has length 877 [2022-07-20 23:59:08,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:08,482 INFO L495 AbstractCegarLoop]: Abstraction has 7034 states and 7476 transitions. [2022-07-20 23:59:08,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.0) internal successors, (301), 6 states have internal predecessors, (301), 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) [2022-07-20 23:59:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 7476 transitions. [2022-07-20 23:59:08,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2022-07-20 23:59:08,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:08,491 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:08,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 23:59:08,491 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2126525007, now seen corresponding path program 1 times [2022-07-20 23:59:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:08,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364700665] [2022-07-20 23:59:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2513 backedges. 868 proven. 418 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2022-07-20 23:59:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:08,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364700665] [2022-07-20 23:59:08,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364700665] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:08,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294524078] [2022-07-20 23:59:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:08,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:08,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:08,880 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:08,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-20 23:59:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:09,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 23:59:09,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2513 backedges. 629 proven. 769 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2022-07-20 23:59:12,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 23:59:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2513 backedges. 762 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-07-20 23:59:12,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294524078] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:12,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-20 23:59:12,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 7] total 15 [2022-07-20 23:59:12,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859884569] [2022-07-20 23:59:12,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:12,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:59:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:59:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-20 23:59:12,921 INFO L87 Difference]: Start difference. First operand 7034 states and 7476 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2022-07-20 23:59:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:13,427 INFO L93 Difference]: Finished difference Result 7086 states and 7527 transitions. [2022-07-20 23:59:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:59:13,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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 927 [2022-07-20 23:59:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:13,434 INFO L225 Difference]: With dead ends: 7086 [2022-07-20 23:59:13,434 INFO L226 Difference]: Without dead ends: 7034 [2022-07-20 23:59:13,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1858 GetRequests, 1845 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-20 23:59:13,436 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 251 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:13,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 10 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 23:59:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2022-07-20 23:59:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 7034. [2022-07-20 23:59:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 1.0622778330726574) internal successors, (7471), 7033 states have internal predecessors, (7471), 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) [2022-07-20 23:59:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 7471 transitions. [2022-07-20 23:59:13,561 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 7471 transitions. Word has length 927 [2022-07-20 23:59:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:13,561 INFO L495 AbstractCegarLoop]: Abstraction has 7034 states and 7471 transitions. [2022-07-20 23:59:13,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2022-07-20 23:59:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 7471 transitions. [2022-07-20 23:59:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2022-07-20 23:59:13,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:13,571 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:13,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:13,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-20 23:59:13,788 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2053273363, now seen corresponding path program 1 times [2022-07-20 23:59:13,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:13,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032642652] [2022-07-20 23:59:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:13,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2585 backedges. 940 proven. 418 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2022-07-20 23:59:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032642652] [2022-07-20 23:59:14,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032642652] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:14,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610727233] [2022-07-20 23:59:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:14,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:14,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:14,171 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:14,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-20 23:59:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:14,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 23:59:14,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2585 backedges. 629 proven. 841 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2022-07-20 23:59:17,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 23:59:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2585 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-07-20 23:59:17,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610727233] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:17,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-20 23:59:17,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 7] total 15 [2022-07-20 23:59:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036072368] [2022-07-20 23:59:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:17,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:59:17,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:59:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-20 23:59:17,393 INFO L87 Difference]: Start difference. First operand 7034 states and 7471 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-07-20 23:59:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:17,857 INFO L93 Difference]: Finished difference Result 7086 states and 7522 transitions. [2022-07-20 23:59:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:59:17,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 939 [2022-07-20 23:59:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:17,862 INFO L225 Difference]: With dead ends: 7086 [2022-07-20 23:59:17,862 INFO L226 Difference]: Without dead ends: 7034 [2022-07-20 23:59:17,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1882 GetRequests, 1869 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-20 23:59:17,864 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 341 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:17,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 10 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:59:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2022-07-20 23:59:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 7034. [2022-07-20 23:59:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 1.0608559647376652) internal successors, (7461), 7033 states have internal predecessors, (7461), 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) [2022-07-20 23:59:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 7461 transitions. [2022-07-20 23:59:17,964 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 7461 transitions. Word has length 939 [2022-07-20 23:59:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:17,965 INFO L495 AbstractCegarLoop]: Abstraction has 7034 states and 7461 transitions. [2022-07-20 23:59:17,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-07-20 23:59:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 7461 transitions. [2022-07-20 23:59:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2022-07-20 23:59:17,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:17,974 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:18,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-20 23:59:18,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-20 23:59:18,184 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1130662458, now seen corresponding path program 1 times [2022-07-20 23:59:18,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:18,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574671548] [2022-07-20 23:59:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 573 proven. 390 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2022-07-20 23:59:18,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:18,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574671548] [2022-07-20 23:59:18,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574671548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:18,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800038234] [2022-07-20 23:59:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:18,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:18,566 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:18,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-20 23:59:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:18,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:59:18,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2022-07-20 23:59:18,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:59:18,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800038234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:18,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:59:18,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-20 23:59:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839184473] [2022-07-20 23:59:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:18,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 23:59:18,869 INFO L87 Difference]: Start difference. First operand 7034 states and 7461 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-07-20 23:59:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:19,247 INFO L93 Difference]: Finished difference Result 8282 states and 8748 transitions. [2022-07-20 23:59:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:19,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 949 [2022-07-20 23:59:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:19,255 INFO L225 Difference]: With dead ends: 8282 [2022-07-20 23:59:19,255 INFO L226 Difference]: Without dead ends: 8280 [2022-07-20 23:59:19,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 23:59:19,257 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 150 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:19,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 11 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 23:59:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2022-07-20 23:59:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 6856. [2022-07-20 23:59:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6856 states, 6855 states have (on average 1.062144420131291) internal successors, (7281), 6855 states have internal predecessors, (7281), 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) [2022-07-20 23:59:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6856 states to 6856 states and 7281 transitions. [2022-07-20 23:59:19,344 INFO L78 Accepts]: Start accepts. Automaton has 6856 states and 7281 transitions. Word has length 949 [2022-07-20 23:59:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:19,345 INFO L495 AbstractCegarLoop]: Abstraction has 6856 states and 7281 transitions. [2022-07-20 23:59:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-07-20 23:59:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6856 states and 7281 transitions. [2022-07-20 23:59:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2022-07-20 23:59:19,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:19,371 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:19,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:19,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-20 23:59:19,595 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 360428800, now seen corresponding path program 1 times [2022-07-20 23:59:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:19,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977835369] [2022-07-20 23:59:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2750 backedges. 999 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-07-20 23:59:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:19,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977835369] [2022-07-20 23:59:19,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977835369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:19,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:19,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 23:59:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993047558] [2022-07-20 23:59:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:19,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 23:59:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 23:59:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:59:19,933 INFO L87 Difference]: Start difference. First operand 6856 states and 7281 transitions. Second operand has 5 states, 5 states have (on average 67.4) internal successors, (337), 4 states have internal predecessors, (337), 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) [2022-07-20 23:59:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:20,685 INFO L93 Difference]: Finished difference Result 8560 states and 9142 transitions. [2022-07-20 23:59:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 23:59:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 4 states have internal predecessors, (337), 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 968 [2022-07-20 23:59:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:20,692 INFO L225 Difference]: With dead ends: 8560 [2022-07-20 23:59:20,692 INFO L226 Difference]: Without dead ends: 8508 [2022-07-20 23:59:20,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:59:20,695 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 120 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:20,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 20 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 23:59:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2022-07-20 23:59:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8102. [2022-07-20 23:59:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8102 states, 8101 states have (on average 1.0703616837427479) internal successors, (8671), 8101 states have internal predecessors, (8671), 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) [2022-07-20 23:59:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8102 states to 8102 states and 8671 transitions. [2022-07-20 23:59:20,767 INFO L78 Accepts]: Start accepts. Automaton has 8102 states and 8671 transitions. Word has length 968 [2022-07-20 23:59:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:20,768 INFO L495 AbstractCegarLoop]: Abstraction has 8102 states and 8671 transitions. [2022-07-20 23:59:20,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 4 states have internal predecessors, (337), 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) [2022-07-20 23:59:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8102 states and 8671 transitions. [2022-07-20 23:59:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2022-07-20 23:59:20,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:20,780 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:20,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 23:59:20,780 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1652977608, now seen corresponding path program 1 times [2022-07-20 23:59:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:20,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189492369] [2022-07-20 23:59:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 762 proven. 339 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-07-20 23:59:21,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:21,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189492369] [2022-07-20 23:59:21,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189492369] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:21,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922336196] [2022-07-20 23:59:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:21,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:21,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:21,191 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:21,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-20 23:59:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:21,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:59:21,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1101 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-07-20 23:59:21,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:59:21,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922336196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:21,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:59:21,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-20 23:59:21,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539988379] [2022-07-20 23:59:21,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:21,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:21,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:59:21,581 INFO L87 Difference]: Start difference. First operand 8102 states and 8671 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) 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) [2022-07-20 23:59:21,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:21,997 INFO L93 Difference]: Finished difference Result 16024 states and 17161 transitions. [2022-07-20 23:59:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:21,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) 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 1001 [2022-07-20 23:59:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:22,003 INFO L225 Difference]: With dead ends: 16024 [2022-07-20 23:59:22,003 INFO L226 Difference]: Without dead ends: 8102 [2022-07-20 23:59:22,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 1000 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:59:22,008 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:22,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 233 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:59:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8102 states. [2022-07-20 23:59:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8102 to 7390. [2022-07-20 23:59:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7390 states, 7389 states have (on average 1.053457842739207) internal successors, (7784), 7389 states have internal predecessors, (7784), 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) [2022-07-20 23:59:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 7784 transitions. [2022-07-20 23:59:22,082 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 7784 transitions. Word has length 1001 [2022-07-20 23:59:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:22,082 INFO L495 AbstractCegarLoop]: Abstraction has 7390 states and 7784 transitions. [2022-07-20 23:59:22,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) 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) [2022-07-20 23:59:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 7784 transitions. [2022-07-20 23:59:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2022-07-20 23:59:22,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:22,093 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 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] [2022-07-20 23:59:22,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:22,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:22,306 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:22,307 INFO L85 PathProgramCache]: Analyzing trace with hash 724492234, now seen corresponding path program 1 times [2022-07-20 23:59:22,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:22,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496709183] [2022-07-20 23:59:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:22,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3107 backedges. 1159 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2022-07-20 23:59:22,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:22,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496709183] [2022-07-20 23:59:22,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496709183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:22,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:22,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:59:22,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838671199] [2022-07-20 23:59:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:22,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:22,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:22,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:59:22,620 INFO L87 Difference]: Start difference. First operand 7390 states and 7784 transitions. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2022-07-20 23:59:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:23,090 INFO L93 Difference]: Finished difference Result 14600 states and 15387 transitions. [2022-07-20 23:59:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 1017 [2022-07-20 23:59:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:23,099 INFO L225 Difference]: With dead ends: 14600 [2022-07-20 23:59:23,099 INFO L226 Difference]: Without dead ends: 7390 [2022-07-20 23:59:23,104 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 [2022-07-20 23:59:23,104 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 46 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:23,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 210 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:59:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2022-07-20 23:59:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 7390. [2022-07-20 23:59:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7390 states, 7389 states have (on average 1.0442549736094193) internal successors, (7716), 7389 states have internal predecessors, (7716), 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) [2022-07-20 23:59:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 7716 transitions. [2022-07-20 23:59:23,193 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 7716 transitions. Word has length 1017 [2022-07-20 23:59:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:23,194 INFO L495 AbstractCegarLoop]: Abstraction has 7390 states and 7716 transitions. [2022-07-20 23:59:23,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2022-07-20 23:59:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 7716 transitions. [2022-07-20 23:59:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2022-07-20 23:59:23,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:23,207 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:23,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 23:59:23,207 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash -203589880, now seen corresponding path program 1 times [2022-07-20 23:59:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:23,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167037479] [2022-07-20 23:59:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3477 backedges. 1008 proven. 0 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2022-07-20 23:59:23,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:23,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167037479] [2022-07-20 23:59:23,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167037479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:23,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:23,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:59:23,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675194799] [2022-07-20 23:59:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:23,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:23,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:59:23,494 INFO L87 Difference]: Start difference. First operand 7390 states and 7716 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2022-07-20 23:59:23,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:23,981 INFO L93 Difference]: Finished difference Result 14778 states and 15443 transitions. [2022-07-20 23:59:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 1018 [2022-07-20 23:59:23,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:23,990 INFO L225 Difference]: With dead ends: 14778 [2022-07-20 23:59:23,990 INFO L226 Difference]: Without dead ends: 7568 [2022-07-20 23:59:23,994 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 [2022-07-20 23:59:23,995 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 111 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:23,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 229 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 23:59:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7568 states. [2022-07-20 23:59:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7568 to 7034. [2022-07-20 23:59:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 1.0354045215413052) internal successors, (7282), 7033 states have internal predecessors, (7282), 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) [2022-07-20 23:59:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 7282 transitions. [2022-07-20 23:59:24,131 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 7282 transitions. Word has length 1018 [2022-07-20 23:59:24,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:24,131 INFO L495 AbstractCegarLoop]: Abstraction has 7034 states and 7282 transitions. [2022-07-20 23:59:24,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2022-07-20 23:59:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 7282 transitions. [2022-07-20 23:59:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2022-07-20 23:59:24,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:24,143 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 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] [2022-07-20 23:59:24,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-20 23:59:24,143 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:24,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash -979598326, now seen corresponding path program 1 times [2022-07-20 23:59:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:24,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186656240] [2022-07-20 23:59:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:24,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3107 backedges. 1875 proven. 216 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2022-07-20 23:59:24,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186656240] [2022-07-20 23:59:24,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186656240] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:24,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701081040] [2022-07-20 23:59:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:24,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:24,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:24,528 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:24,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-20 23:59:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:24,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-20 23:59:24,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3107 backedges. 1651 proven. 462 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-20 23:59:30,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 23:59:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3107 backedges. 1440 proven. 673 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-20 23:59:34,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701081040] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 23:59:34,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 23:59:34,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 19 [2022-07-20 23:59:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628591960] [2022-07-20 23:59:34,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 23:59:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-20 23:59:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-20 23:59:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-07-20 23:59:34,488 INFO L87 Difference]: Start difference. First operand 7034 states and 7282 transitions. Second operand has 20 states, 20 states have (on average 59.2) internal successors, (1184), 19 states have internal predecessors, (1184), 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) [2022-07-20 23:59:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:37,622 INFO L93 Difference]: Finished difference Result 17241 states and 17825 transitions. [2022-07-20 23:59:37,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-20 23:59:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 59.2) internal successors, (1184), 19 states have internal predecessors, (1184), 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 1020 [2022-07-20 23:59:37,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:37,632 INFO L225 Difference]: With dead ends: 17241 [2022-07-20 23:59:37,632 INFO L226 Difference]: Without dead ends: 9824 [2022-07-20 23:59:37,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2057 GetRequests, 2023 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=791, Unknown=0, NotChecked=0, Total=1122 [2022-07-20 23:59:37,637 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5378 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5378 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:37,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5378 Valid, 65 Invalid, 4043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:59:37,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9824 states. [2022-07-20 23:59:37,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9824 to 7068. [2022-07-20 23:59:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7067 states have (on average 1.0273100325456346) internal successors, (7260), 7067 states have internal predecessors, (7260), 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) [2022-07-20 23:59:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 7260 transitions. [2022-07-20 23:59:37,710 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 7260 transitions. Word has length 1020 [2022-07-20 23:59:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:37,711 INFO L495 AbstractCegarLoop]: Abstraction has 7068 states and 7260 transitions. [2022-07-20 23:59:37,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 59.2) internal successors, (1184), 19 states have internal predecessors, (1184), 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) [2022-07-20 23:59:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 7260 transitions. [2022-07-20 23:59:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2022-07-20 23:59:37,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:37,720 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:37,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:37,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-20 23:59:37,921 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:37,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1191305072, now seen corresponding path program 1 times [2022-07-20 23:59:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:37,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213539336] [2022-07-20 23:59:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3959 backedges. 1191 proven. 0 refuted. 0 times theorem prover too weak. 2768 trivial. 0 not checked. [2022-07-20 23:59:38,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213539336] [2022-07-20 23:59:38,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213539336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:38,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:38,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 23:59:38,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635392724] [2022-07-20 23:59:38,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:38,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 23:59:38,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 23:59:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:59:38,298 INFO L87 Difference]: Start difference. First operand 7068 states and 7260 transitions. Second operand has 5 states, 5 states have (on average 67.4) internal successors, (337), 4 states have internal predecessors, (337), 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) [2022-07-20 23:59:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:39,042 INFO L93 Difference]: Finished difference Result 14336 states and 14733 transitions. [2022-07-20 23:59:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 23:59:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 4 states have internal predecessors, (337), 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 1150 [2022-07-20 23:59:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:39,047 INFO L225 Difference]: With dead ends: 14336 [2022-07-20 23:59:39,047 INFO L226 Difference]: Without dead ends: 7424 [2022-07-20 23:59:39,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:59:39,049 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:39,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 23 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 23:59:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2022-07-20 23:59:39,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 7068. [2022-07-20 23:59:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7067 states have (on average 1.0278760435828498) internal successors, (7264), 7067 states have internal predecessors, (7264), 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) [2022-07-20 23:59:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 7264 transitions. [2022-07-20 23:59:39,105 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 7264 transitions. Word has length 1150 [2022-07-20 23:59:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:39,106 INFO L495 AbstractCegarLoop]: Abstraction has 7068 states and 7264 transitions. [2022-07-20 23:59:39,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 4 states have internal predecessors, (337), 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) [2022-07-20 23:59:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 7264 transitions. [2022-07-20 23:59:39,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1226 [2022-07-20 23:59:39,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:39,118 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:39,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-20 23:59:39,118 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:39,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1796052522, now seen corresponding path program 1 times [2022-07-20 23:59:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:39,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352178737] [2022-07-20 23:59:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4210 backedges. 432 proven. 1467 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2022-07-20 23:59:39,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352178737] [2022-07-20 23:59:39,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352178737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:39,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833707565] [2022-07-20 23:59:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:39,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:39,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:39,496 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:39,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-20 23:59:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:39,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:59:39,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4210 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 3761 trivial. 0 not checked. [2022-07-20 23:59:39,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:59:39,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833707565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:39,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:59:39,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-20 23:59:39,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812357184] [2022-07-20 23:59:39,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:39,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:39,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-20 23:59:39,883 INFO L87 Difference]: Start difference. First operand 7068 states and 7264 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-07-20 23:59:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:40,265 INFO L93 Difference]: Finished difference Result 8138 states and 8352 transitions. [2022-07-20 23:59:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:40,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 1225 [2022-07-20 23:59:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:40,271 INFO L225 Difference]: With dead ends: 8138 [2022-07-20 23:59:40,271 INFO L226 Difference]: Without dead ends: 8136 [2022-07-20 23:59:40,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1230 GetRequests, 1225 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-20 23:59:40,273 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 149 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:40,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 11 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 23:59:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2022-07-20 23:59:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 6890. [2022-07-20 23:59:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6890 states, 6889 states have (on average 1.0281608361155465) internal successors, (7083), 6889 states have internal predecessors, (7083), 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) [2022-07-20 23:59:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 7083 transitions. [2022-07-20 23:59:40,368 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 7083 transitions. Word has length 1225 [2022-07-20 23:59:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:40,369 INFO L495 AbstractCegarLoop]: Abstraction has 6890 states and 7083 transitions. [2022-07-20 23:59:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-07-20 23:59:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 7083 transitions. [2022-07-20 23:59:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1269 [2022-07-20 23:59:40,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:40,379 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:40,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:40,603 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash 780560893, now seen corresponding path program 1 times [2022-07-20 23:59:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:40,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535902404] [2022-07-20 23:59:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:40,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 750 proven. 655 refuted. 0 times theorem prover too weak. 3555 trivial. 0 not checked. [2022-07-20 23:59:40,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:40,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535902404] [2022-07-20 23:59:40,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535902404] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:59:40,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929759561] [2022-07-20 23:59:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:40,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:59:40,955 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:59:40,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-20 23:59:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:41,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:59:41,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:59:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 1405 proven. 0 refuted. 0 times theorem prover too weak. 3555 trivial. 0 not checked. [2022-07-20 23:59:41,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:59:41,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929759561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:41,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:59:41,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-20 23:59:41,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369327272] [2022-07-20 23:59:41,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:41,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:41,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:41,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:59:41,382 INFO L87 Difference]: Start difference. First operand 6890 states and 7083 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-07-20 23:59:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:41,730 INFO L93 Difference]: Finished difference Result 13548 states and 13888 transitions. [2022-07-20 23:59:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 1268 [2022-07-20 23:59:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:41,732 INFO L225 Difference]: With dead ends: 13548 [2022-07-20 23:59:41,732 INFO L226 Difference]: Without dead ends: 0 [2022-07-20 23:59:41,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1271 GetRequests, 1267 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:59:41,736 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:41,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 227 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 23:59:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-20 23:59:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-20 23:59:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-20 23:59:41,738 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1268 [2022-07-20 23:59:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:41,738 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-20 23:59:41,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-07-20 23:59:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-20 23:59:41,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-20 23:59:41,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-20 23:59:41,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-20 23:59:41,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:59:41,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-20 23:59:49,519 INFO L899 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2022-07-20 23:59:49,519 INFO L899 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2022-07-20 23:59:49,519 INFO L899 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2022-07-20 23:59:49,519 INFO L899 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2022-07-20 23:59:49,519 INFO L899 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2022-07-20 23:59:49,519 INFO L899 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,519 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2022-07-20 23:59:49,520 INFO L899 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2022-07-20 23:59:49,521 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,522 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2022-07-20 23:59:49,523 INFO L899 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2022-07-20 23:59:49,524 INFO L899 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2022-07-20 23:59:49,525 INFO L899 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2022-07-20 23:59:49,526 INFO L899 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,527 INFO L899 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 170) no Hoare annotation was computed. [2022-07-20 23:59:49,528 INFO L899 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2022-07-20 23:59:49,529 INFO L899 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,530 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2022-07-20 23:59:49,531 INFO L899 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2022-07-20 23:59:49,532 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2022-07-20 23:59:49,533 INFO L899 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,534 INFO L899 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2022-07-20 23:59:49,535 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2022-07-20 23:59:49,536 INFO L899 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2022-07-20 23:59:49,537 INFO L899 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2022-07-20 23:59:49,538 INFO L899 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2022-07-20 23:59:49,538 INFO L899 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,538 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,538 INFO L895 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse14 (<= ~a12~0 11)) (.cse13 (<= ~a15~0 8)) (.cse27 (= ~a21~0 6)) (.cse23 (< 80 ~a12~0)) (.cse2 (= ~a15~0 8))) (let ((.cse21 (or (not .cse2) (<= (div ~a12~0 5) 200507))) (.cse11 (not .cse23)) (.cse12 (<= (+ ~a12~0 43) 0)) (.cse4 (<= ~a12~0 75)) (.cse19 (<= 6 ~a15~0)) (.cse9 (<= ~a21~0 9)) (.cse3 (<= ~a12~0 73282)) (.cse5 (or (and .cse13 (<= 8 ~a15~0)) (and .cse13 (not .cse27)))) (.cse6 (<= 10 ~a21~0)) (.cse8 (<= 9 ~a21~0)) (.cse26 (<= ~a12~0 73281)) (.cse25 (<= ~a21~0 8)) (.cse16 (<= 7 ~a21~0)) (.cse1 (<= ~a21~0 7)) (.cse15 (<= 7 ~a15~0)) (.cse17 (<= (div (div (+ ~a12~0 (- 94512)) 5) 5) 533423)) (.cse10 (<= ~a15~0 7)) (.cse24 (<= 8 ~a21~0)) (.cse20 (or .cse14 .cse23)) (.cse0 (= ~a24~0 1)) (.cse18 (<= 9 ~a15~0)) (.cse22 (<= ~a21~0 6)) (.cse7 (<= 0 (+ ~a12~0 42)))) (or (and .cse0 .cse1 (<= (+ 49 ~a12~0) 0) .cse2) (and .cse3 .cse0 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse9 .cse0 .cse10 .cse5 .cse11) (and .cse12 .cse0 .cse13 .cse6 .cse2) (and .cse14 .cse0 .cse6 .cse7) (and .cse9 .cse0 .cse4 .cse5 (or (= |ULTIMATE.start_calculate_output_~input#1| 6) (= |ULTIMATE.start_calculate_output_~input#1| 2) (= |ULTIMATE.start_calculate_output_~input#1| 1) (= |ULTIMATE.start_calculate_output_~input#1| 3) (= |ULTIMATE.start_calculate_output_~input#1| 4) (= |ULTIMATE.start_calculate_output_~input#1| 5)) .cse7 .cse11 .cse2) (and .cse15 .cse0 .cse16 .cse13 .cse17 .cse10 .cse1) (and .cse14 .cse8 .cse0 .cse5 .cse7) (and .cse12 .cse0 .cse18 .cse6) (and .cse19 .cse3 .cse0 .cse10 .cse5 .cse6) (and .cse8 .cse9 .cse12 .cse0 .cse13) (and .cse15 .cse20 .cse0 .cse21 .cse13 .cse22 .cse17) (and .cse15 .cse0 .cse21 .cse23 .cse17 .cse6) (and .cse20 .cse0 .cse18 .cse17 .cse24 .cse25) (and .cse19 (or (and .cse0 .cse4 .cse13 .cse22) (and .cse20 .cse26 .cse0 .cse13 .cse22))) (and (or (and .cse9 .cse0 .cse5 .cse24 .cse25 .cse11) (and .cse0 .cse16 .cse4 .cse13 .cse1)) .cse7) (and .cse12 .cse13 .cse22) (and .cse0 .cse4 .cse24 .cse25 .cse7) (and .cse8 .cse19 .cse9 .cse0 .cse17 .cse10) (and .cse3 .cse0 .cse5 (not (<= ~a12~0 80)) .cse6) (and .cse0 .cse13 .cse22 (= 5 ~a15~0) .cse27 .cse17 (<= 526013 ~a12~0)) (and .cse8 .cse0 .cse18 .cse23 .cse17) (and .cse26 .cse0 .cse24 .cse25 .cse7 .cse2) (and .cse20 .cse0 .cse16 .cse18 .cse17 .cse1 .cse7) (and .cse15 .cse0 .cse17 .cse10 .cse24) (and .cse20 .cse0 .cse18 .cse22 .cse7 (<= ~a12~0 225871))))) [2022-07-20 23:59:49,538 INFO L899 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,539 INFO L899 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L902 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,540 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L895 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse14 (<= ~a12~0 11)) (.cse13 (<= ~a15~0 8)) (.cse27 (= ~a21~0 6)) (.cse23 (< 80 ~a12~0)) (.cse2 (= ~a15~0 8))) (let ((.cse21 (or (not .cse2) (<= (div ~a12~0 5) 200507))) (.cse11 (not .cse23)) (.cse12 (<= (+ ~a12~0 43) 0)) (.cse4 (<= ~a12~0 75)) (.cse19 (<= 6 ~a15~0)) (.cse9 (<= ~a21~0 9)) (.cse3 (<= ~a12~0 73282)) (.cse5 (or (and .cse13 (<= 8 ~a15~0)) (and .cse13 (not .cse27)))) (.cse6 (<= 10 ~a21~0)) (.cse8 (<= 9 ~a21~0)) (.cse26 (<= ~a12~0 73281)) (.cse25 (<= ~a21~0 8)) (.cse16 (<= 7 ~a21~0)) (.cse1 (<= ~a21~0 7)) (.cse15 (<= 7 ~a15~0)) (.cse17 (<= (div (div (+ ~a12~0 (- 94512)) 5) 5) 533423)) (.cse10 (<= ~a15~0 7)) (.cse24 (<= 8 ~a21~0)) (.cse20 (or .cse14 .cse23)) (.cse0 (= ~a24~0 1)) (.cse18 (<= 9 ~a15~0)) (.cse22 (<= ~a21~0 6)) (.cse7 (<= 0 (+ ~a12~0 42)))) (or (and .cse0 .cse1 (<= (+ 49 ~a12~0) 0) .cse2) (and .cse3 .cse0 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse9 .cse0 .cse10 .cse5 .cse11) (and .cse12 .cse0 .cse13 .cse6 .cse2) (and .cse14 .cse0 .cse6 .cse7) (and .cse9 .cse0 .cse4 .cse5 (or (= |ULTIMATE.start_calculate_output_~input#1| 6) (= |ULTIMATE.start_calculate_output_~input#1| 2) (= |ULTIMATE.start_calculate_output_~input#1| 1) (= |ULTIMATE.start_calculate_output_~input#1| 3) (= |ULTIMATE.start_calculate_output_~input#1| 4) (= |ULTIMATE.start_calculate_output_~input#1| 5)) .cse7 .cse11 .cse2) (and .cse15 .cse0 .cse16 .cse13 .cse17 .cse10 .cse1) (and .cse14 .cse8 .cse0 .cse5 .cse7) (and .cse12 .cse0 .cse18 .cse6) (and .cse19 .cse3 .cse0 .cse10 .cse5 .cse6) (and .cse8 .cse9 .cse12 .cse0 .cse13) (and .cse15 .cse20 .cse0 .cse21 .cse13 .cse22 .cse17) (and .cse15 .cse0 .cse21 .cse23 .cse17 .cse6) (and .cse20 .cse0 .cse18 .cse17 .cse24 .cse25) (and .cse19 (or (and .cse0 .cse4 .cse13 .cse22) (and .cse20 .cse26 .cse0 .cse13 .cse22))) (and (or (and .cse9 .cse0 .cse5 .cse24 .cse25 .cse11) (and .cse0 .cse16 .cse4 .cse13 .cse1)) .cse7) (and .cse12 .cse13 .cse22) (and .cse0 .cse4 .cse24 .cse25 .cse7) (and .cse8 .cse19 .cse9 .cse0 .cse17 .cse10) (and .cse3 .cse0 .cse5 (not (<= ~a12~0 80)) .cse6) (and .cse0 .cse13 .cse22 (= 5 ~a15~0) .cse27 .cse17 (<= 526013 ~a12~0)) (and .cse8 .cse0 .cse18 .cse23 .cse17) (and .cse26 .cse0 .cse24 .cse25 .cse7 .cse2) (and .cse20 .cse0 .cse16 .cse18 .cse17 .cse1 .cse7) (and .cse15 .cse0 .cse17 .cse10 .cse24) (and .cse20 .cse0 .cse18 .cse22 .cse7 (<= ~a12~0 225871))))) [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,541 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2022-07-20 23:59:49,542 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2022-07-20 23:59:49,542 INFO L899 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2022-07-20 23:59:49,542 INFO L899 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2022-07-20 23:59:49,542 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-07-20 23:59:49,545 INFO L356 BasicCegarLoop]: Path program 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] [2022-07-20 23:59:49,546 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 23:59:49,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:59:49 BoogieIcfgContainer [2022-07-20 23:59:49,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 23:59:49,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 23:59:49,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 23:59:49,577 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 23:59:49,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:58:32" (3/4) ... [2022-07-20 23:59:49,580 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-20 23:59:49,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-20 23:59:49,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-20 23:59:49,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-20 23:59:49,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-20 23:59:49,678 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 23:59:49,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 23:59:49,678 INFO L158 Benchmark]: Toolchain (without parser) took 79176.01ms. Allocated memory was 52.4MB in the beginning and 973.1MB in the end (delta: 920.6MB). Free memory was 27.0MB in the beginning and 366.8MB in the end (delta: -339.8MB). Peak memory consumption was 579.8MB. Max. memory is 16.1GB. [2022-07-20 23:59:49,679 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 34.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 23:59:49,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.84ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 26.7MB in the beginning and 36.6MB in the end (delta: -9.9MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-07-20 23:59:49,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.36ms. Allocated memory is still 62.9MB. Free memory was 36.6MB in the beginning and 37.1MB in the end (delta: -479.2kB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-07-20 23:59:49,679 INFO L158 Benchmark]: Boogie Preprocessor took 98.30ms. Allocated memory is still 62.9MB. Free memory was 37.1MB in the beginning and 31.3MB in the end (delta: 5.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-20 23:59:49,680 INFO L158 Benchmark]: RCFGBuilder took 1246.20ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 31.3MB in the beginning and 58.7MB in the end (delta: -27.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-07-20 23:59:49,680 INFO L158 Benchmark]: TraceAbstraction took 77084.39ms. Allocated memory was 92.3MB in the beginning and 973.1MB in the end (delta: 880.8MB). Free memory was 58.3MB in the beginning and 379.4MB in the end (delta: -321.1MB). Peak memory consumption was 668.5MB. Max. memory is 16.1GB. [2022-07-20 23:59:49,680 INFO L158 Benchmark]: Witness Printer took 101.57ms. Allocated memory is still 973.1MB. Free memory was 379.4MB in the beginning and 366.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-20 23:59:49,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 34.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.84ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 26.7MB in the beginning and 36.6MB in the end (delta: -9.9MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.36ms. Allocated memory is still 62.9MB. Free memory was 36.6MB in the beginning and 37.1MB in the end (delta: -479.2kB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.30ms. Allocated memory is still 62.9MB. Free memory was 37.1MB in the beginning and 31.3MB in the end (delta: 5.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1246.20ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 31.3MB in the beginning and 58.7MB in the end (delta: -27.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * TraceAbstraction took 77084.39ms. Allocated memory was 92.3MB in the beginning and 973.1MB in the end (delta: 880.8MB). Free memory was 58.3MB in the beginning and 379.4MB in the end (delta: -321.1MB). Peak memory consumption was 668.5MB. Max. memory is 16.1GB. * Witness Printer took 101.57ms. Allocated memory is still 973.1MB. Free memory was 379.4MB in the beginning and 366.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 170]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.0s, OverallIterations: 32, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 20.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9377 SdHoareTripleChecker+Valid, 18.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9377 mSDsluCounter, 3159 SdHoareTripleChecker+Invalid, 14.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 811 IncrementalHoareTripleChecker+Unchecked, 256 mSDsCounter, 2213 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20821 IncrementalHoareTripleChecker+Invalid, 23845 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2213 mSolverCounterUnsat, 2903 mSDtfsCounter, 20821 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19237 GetRequests, 19073 SyntacticMatches, 4 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8102occurred in iteration=25, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 32 MinimizatonAttempts, 12640 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 108 NumberOfFragments, 1457 HoareAnnotationTreeSize, 3 FomulaSimplifications, 39262 FormulaSimplificationTreeSizeReduction, 3.7s HoareSimplificationTime, 3 FomulaSimplificationsInter, 91772 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 35.4s InterpolantComputationTime, 37435 NumberOfCodeBlocks, 37435 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 42598 ConstructedInterpolants, 222 QuantifiedInterpolants, 216776 SizeOfPredicates, 19 NumberOfNonLiveVariables, 17388 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 55 InterpolantComputations, 30 PerfectInterpolantSequences, 106636/115422 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((a24 == 1 && a21 <= 7) && 49 + a12 <= 0) && a15 == 8) || (((((a12 <= 73282 && a24 == 1) && a12 <= 75) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 10 <= a21) && 0 <= a12 + 42)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 7) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && !(80 < a12))) || ((((a12 + 43 <= 0 && a24 == 1) && a15 <= 8) && 10 <= a21) && a15 == 8)) || (((a12 <= 11 && a24 == 1) && 10 <= a21) && 0 <= a12 + 42)) || (((((((a21 <= 9 && a24 == 1) && a12 <= 75) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && (((((input == 6 || input == 2) || input == 1) || input == 3) || input == 4) || input == 5)) && 0 <= a12 + 42) && !(80 < a12)) && a15 == 8)) || ((((((7 <= a15 && a24 == 1) && 7 <= a21) && a15 <= 8) && (a12 + -94512) / 5 / 5 <= 533423) && a15 <= 7) && a21 <= 7)) || ((((a12 <= 11 && 9 <= a21) && a24 == 1) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 0 <= a12 + 42)) || (((a12 + 43 <= 0 && a24 == 1) && 9 <= a15) && 10 <= a21)) || (((((6 <= a15 && a12 <= 73282) && a24 == 1) && a15 <= 7) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 10 <= a21)) || ((((9 <= a21 && a21 <= 9) && a12 + 43 <= 0) && a24 == 1) && a15 <= 8)) || ((((((7 <= a15 && (a12 <= 11 || 80 < a12)) && a24 == 1) && (!(a15 == 8) || a12 / 5 <= 200507)) && a15 <= 8) && a21 <= 6) && (a12 + -94512) / 5 / 5 <= 533423)) || (((((7 <= a15 && a24 == 1) && (!(a15 == 8) || a12 / 5 <= 200507)) && 80 < a12) && (a12 + -94512) / 5 / 5 <= 533423) && 10 <= a21)) || ((((((a12 <= 11 || 80 < a12) && a24 == 1) && 9 <= a15) && (a12 + -94512) / 5 / 5 <= 533423) && 8 <= a21) && a21 <= 8)) || (6 <= a15 && ((((a24 == 1 && a12 <= 75) && a15 <= 8) && a21 <= 6) || (((((a12 <= 11 || 80 < a12) && a12 <= 73281) && a24 == 1) && a15 <= 8) && a21 <= 6)))) || (((((((a21 <= 9 && a24 == 1) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 8 <= a21) && a21 <= 8) && !(80 < a12)) || ((((a24 == 1 && 7 <= a21) && a12 <= 75) && a15 <= 8) && a21 <= 7)) && 0 <= a12 + 42)) || ((a12 + 43 <= 0 && a15 <= 8) && a21 <= 6)) || ((((a24 == 1 && a12 <= 75) && 8 <= a21) && a21 <= 8) && 0 <= a12 + 42)) || (((((9 <= a21 && 6 <= a15) && a21 <= 9) && a24 == 1) && (a12 + -94512) / 5 / 5 <= 533423) && a15 <= 7)) || ((((a12 <= 73282 && a24 == 1) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && !(a12 <= 80)) && 10 <= a21)) || ((((((a24 == 1 && a15 <= 8) && a21 <= 6) && 5 == a15) && a21 == 6) && (a12 + -94512) / 5 / 5 <= 533423) && 526013 <= a12)) || ((((9 <= a21 && a24 == 1) && 9 <= a15) && 80 < a12) && (a12 + -94512) / 5 / 5 <= 533423)) || (((((a12 <= 73281 && a24 == 1) && 8 <= a21) && a21 <= 8) && 0 <= a12 + 42) && a15 == 8)) || (((((((a12 <= 11 || 80 < a12) && a24 == 1) && 7 <= a21) && 9 <= a15) && (a12 + -94512) / 5 / 5 <= 533423) && a21 <= 7) && 0 <= a12 + 42)) || ((((7 <= a15 && a24 == 1) && (a12 + -94512) / 5 / 5 <= 533423) && a15 <= 7) && 8 <= a21)) || ((((((a12 <= 11 || 80 < a12) && a24 == 1) && 9 <= a15) && a21 <= 6) && 0 <= a12 + 42) && a12 <= 225871) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((a24 == 1 && a21 <= 7) && 49 + a12 <= 0) && a15 == 8) || (((((a12 <= 73282 && a24 == 1) && a12 <= 75) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 10 <= a21) && 0 <= a12 + 42)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 7) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && !(80 < a12))) || ((((a12 + 43 <= 0 && a24 == 1) && a15 <= 8) && 10 <= a21) && a15 == 8)) || (((a12 <= 11 && a24 == 1) && 10 <= a21) && 0 <= a12 + 42)) || (((((((a21 <= 9 && a24 == 1) && a12 <= 75) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && (((((input == 6 || input == 2) || input == 1) || input == 3) || input == 4) || input == 5)) && 0 <= a12 + 42) && !(80 < a12)) && a15 == 8)) || ((((((7 <= a15 && a24 == 1) && 7 <= a21) && a15 <= 8) && (a12 + -94512) / 5 / 5 <= 533423) && a15 <= 7) && a21 <= 7)) || ((((a12 <= 11 && 9 <= a21) && a24 == 1) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 0 <= a12 + 42)) || (((a12 + 43 <= 0 && a24 == 1) && 9 <= a15) && 10 <= a21)) || (((((6 <= a15 && a12 <= 73282) && a24 == 1) && a15 <= 7) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 10 <= a21)) || ((((9 <= a21 && a21 <= 9) && a12 + 43 <= 0) && a24 == 1) && a15 <= 8)) || ((((((7 <= a15 && (a12 <= 11 || 80 < a12)) && a24 == 1) && (!(a15 == 8) || a12 / 5 <= 200507)) && a15 <= 8) && a21 <= 6) && (a12 + -94512) / 5 / 5 <= 533423)) || (((((7 <= a15 && a24 == 1) && (!(a15 == 8) || a12 / 5 <= 200507)) && 80 < a12) && (a12 + -94512) / 5 / 5 <= 533423) && 10 <= a21)) || ((((((a12 <= 11 || 80 < a12) && a24 == 1) && 9 <= a15) && (a12 + -94512) / 5 / 5 <= 533423) && 8 <= a21) && a21 <= 8)) || (6 <= a15 && ((((a24 == 1 && a12 <= 75) && a15 <= 8) && a21 <= 6) || (((((a12 <= 11 || 80 < a12) && a12 <= 73281) && a24 == 1) && a15 <= 8) && a21 <= 6)))) || (((((((a21 <= 9 && a24 == 1) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && 8 <= a21) && a21 <= 8) && !(80 < a12)) || ((((a24 == 1 && 7 <= a21) && a12 <= 75) && a15 <= 8) && a21 <= 7)) && 0 <= a12 + 42)) || ((a12 + 43 <= 0 && a15 <= 8) && a21 <= 6)) || ((((a24 == 1 && a12 <= 75) && 8 <= a21) && a21 <= 8) && 0 <= a12 + 42)) || (((((9 <= a21 && 6 <= a15) && a21 <= 9) && a24 == 1) && (a12 + -94512) / 5 / 5 <= 533423) && a15 <= 7)) || ((((a12 <= 73282 && a24 == 1) && ((a15 <= 8 && 8 <= a15) || (a15 <= 8 && !(a21 == 6)))) && !(a12 <= 80)) && 10 <= a21)) || ((((((a24 == 1 && a15 <= 8) && a21 <= 6) && 5 == a15) && a21 == 6) && (a12 + -94512) / 5 / 5 <= 533423) && 526013 <= a12)) || ((((9 <= a21 && a24 == 1) && 9 <= a15) && 80 < a12) && (a12 + -94512) / 5 / 5 <= 533423)) || (((((a12 <= 73281 && a24 == 1) && 8 <= a21) && a21 <= 8) && 0 <= a12 + 42) && a15 == 8)) || (((((((a12 <= 11 || 80 < a12) && a24 == 1) && 7 <= a21) && 9 <= a15) && (a12 + -94512) / 5 / 5 <= 533423) && a21 <= 7) && 0 <= a12 + 42)) || ((((7 <= a15 && a24 == 1) && (a12 + -94512) / 5 / 5 <= 533423) && a15 <= 7) && 8 <= a21)) || ((((((a12 <= 11 || 80 < a12) && a24 == 1) && 9 <= a15) && a21 <= 6) && 0 <= a12 + 42) && a12 <= 225871) RESULT: Ultimate proved your program to be correct! [2022-07-20 23:59:49,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE