./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.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 8d6ab270424ffa2caaf27b7ac8ad862ff93b45999f126eddc180d440bd9f4c92 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:47:24,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:47:24,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:47:25,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:47:25,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:47:25,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:47:25,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:47:25,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:47:25,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:47:25,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:47:25,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:47:25,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:47:25,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:47:25,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:47:25,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:47:25,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:47:25,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:47:25,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:47:25,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:47:25,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:47:25,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:47:25,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:47:25,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:47:25,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:47:25,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:47:25,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:47:25,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:47:25,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:47:25,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:47:25,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:47:25,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:47:25,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:47:25,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:47:25,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:47:25,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:47:25,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:47:25,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:47:25,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:47:25,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:47:25,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:47:25,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:47:25,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:47:25,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:47:25,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:47:25,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:47:25,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:47:25,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:47:25,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:47:25,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:47:25,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:47:25,093 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:47:25,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:47:25,094 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:47:25,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:47:25,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:47:25,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:47:25,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:47:25,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:47:25,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:47:25,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:47:25,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:47:25,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:47:25,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:47:25,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:47:25,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:47:25,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:47:25,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:47:25,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:47:25,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:47:25,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:47:25,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:47:25,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:47:25,099 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:47:25,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:47:25,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:47:25,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:47:25,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d6ab270424ffa2caaf27b7ac8ad862ff93b45999f126eddc180d440bd9f4c92 [2021-12-21 14:47:25,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:47:25,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:47:25,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:47:25,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:47:25,337 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:47:25,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2021-12-21 14:47:25,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f83be5c47/7ebb31f571f548bf8ea00ba6792b229b/FLAG479207121 [2021-12-21 14:47:25,996 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:47:25,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2021-12-21 14:47:26,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f83be5c47/7ebb31f571f548bf8ea00ba6792b229b/FLAG479207121 [2021-12-21 14:47:26,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f83be5c47/7ebb31f571f548bf8ea00ba6792b229b [2021-12-21 14:47:26,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:47:26,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:47:26,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:47:26,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:47:26,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:47:26,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:47:26" (1/1) ... [2021-12-21 14:47:26,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7772b8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:26, skipping insertion in model container [2021-12-21 14:47:26,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:47:26" (1/1) ... [2021-12-21 14:47:26,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:47:26,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:47:26,869 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[26860,26873] [2021-12-21 14:47:26,906 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[30367,30380] [2021-12-21 14:47:27,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:47:27,508 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:47:27,564 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[26860,26873] [2021-12-21 14:47:27,570 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[30367,30380] [2021-12-21 14:47:27,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:47:27,956 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:47:27,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27 WrapperNode [2021-12-21 14:47:27,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:47:27,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:47:27,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:47:27,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:47:27,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,409 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2021-12-21 14:47:28,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:47:28,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:47:28,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:47:28,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:47:28,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:47:28,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:47:28,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:47:28,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:47:28,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (1/1) ... [2021-12-21 14:47:28,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:47:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:47:28,909 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) [2021-12-21 14:47:28,923 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 [2021-12-21 14:47:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:47:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:47:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:47:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:47:29,188 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:47:29,189 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:47:32,641 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:47:32,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:47:32,656 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 14:47:32,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:47:32 BoogieIcfgContainer [2021-12-21 14:47:32,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:47:32,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:47:32,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:47:32,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:47:32,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:47:26" (1/3) ... [2021-12-21 14:47:32,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5864d56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:47:32, skipping insertion in model container [2021-12-21 14:47:32,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:47:27" (2/3) ... [2021-12-21 14:47:32,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5864d56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:47:32, skipping insertion in model container [2021-12-21 14:47:32,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:47:32" (3/3) ... [2021-12-21 14:47:32,668 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2021-12-21 14:47:32,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:47:32,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:47:32,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:47:32,738 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:47:32,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:47:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 14:47:32,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:32,775 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:47:32,775 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1701875667, now seen corresponding path program 1 times [2021-12-21 14:47:32,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:32,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54304419] [2021-12-21 14:47:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:32,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:33,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:33,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54304419] [2021-12-21 14:47:33,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54304419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:33,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:33,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:47:33,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837733355] [2021-12-21 14:47:33,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:33,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:33,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:33,086 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:36,403 INFO L93 Difference]: Finished difference Result 2614 states and 5014 transitions. [2021-12-21 14:47:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:36,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-21 14:47:36,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:36,427 INFO L225 Difference]: With dead ends: 2614 [2021-12-21 14:47:36,428 INFO L226 Difference]: Without dead ends: 1648 [2021-12-21 14:47:36,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:36,436 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1059 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:36,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 366 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-21 14:47:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-21 14:47:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2021-12-21 14:47:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.8572296476306196) internal successors, (3057), 1647 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 3057 transitions. [2021-12-21 14:47:36,546 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 3057 transitions. Word has length 30 [2021-12-21 14:47:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:36,546 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 3057 transitions. [2021-12-21 14:47:36,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 3057 transitions. [2021-12-21 14:47:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-21 14:47:36,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:36,549 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:47:36,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:47:36,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-21 14:47:36,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:36,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355883093] [2021-12-21 14:47:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:36,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:36,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:36,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355883093] [2021-12-21 14:47:36,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355883093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:36,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:36,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:47:36,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780529528] [2021-12-21 14:47:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:36,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:47:36,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:47:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:47:36,672 INFO L87 Difference]: Start difference. First operand 1648 states and 3057 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:36,755 INFO L93 Difference]: Finished difference Result 1728 states and 3182 transitions. [2021-12-21 14:47:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:47:36,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-21 14:47:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:36,762 INFO L225 Difference]: With dead ends: 1728 [2021-12-21 14:47:36,762 INFO L226 Difference]: Without dead ends: 1648 [2021-12-21 14:47:36,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:47:36,764 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:36,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-21 14:47:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2021-12-21 14:47:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.8201701093560145) internal successors, (2996), 1647 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2996 transitions. [2021-12-21 14:47:36,796 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2996 transitions. Word has length 46 [2021-12-21 14:47:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:36,797 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2996 transitions. [2021-12-21 14:47:36,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2996 transitions. [2021-12-21 14:47:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-21 14:47:36,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:36,800 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:47:36,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1580122138, now seen corresponding path program 1 times [2021-12-21 14:47:36,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:36,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30120390] [2021-12-21 14:47:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:36,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:36,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:36,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30120390] [2021-12-21 14:47:36,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30120390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:36,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:36,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:36,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186638927] [2021-12-21 14:47:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:36,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:47:36,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:47:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:47:36,937 INFO L87 Difference]: Start difference. First operand 1648 states and 2996 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:41,912 INFO L93 Difference]: Finished difference Result 5413 states and 9984 transitions. [2021-12-21 14:47:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:47:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-21 14:47:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:41,929 INFO L225 Difference]: With dead ends: 5413 [2021-12-21 14:47:41,930 INFO L226 Difference]: Without dead ends: 3909 [2021-12-21 14:47:41,933 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:41,936 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 2682 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:41,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2682 Valid, 385 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-21 14:47:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3909 states. [2021-12-21 14:47:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3909 to 3901. [2021-12-21 14:47:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3899 states have (on average 1.5957937932803283) internal successors, (6222), 3900 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 6222 transitions. [2021-12-21 14:47:42,024 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 6222 transitions. Word has length 95 [2021-12-21 14:47:42,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:42,026 INFO L470 AbstractCegarLoop]: Abstraction has 3901 states and 6222 transitions. [2021-12-21 14:47:42,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:42,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 6222 transitions. [2021-12-21 14:47:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:47:42,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:42,031 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:42,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:47:42,032 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:42,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1618571541, now seen corresponding path program 1 times [2021-12-21 14:47:42,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:42,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576792499] [2021-12-21 14:47:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:42,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 14:47:42,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576792499] [2021-12-21 14:47:42,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576792499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:42,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:42,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:47:42,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159672869] [2021-12-21 14:47:42,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:42,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:42,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:42,171 INFO L87 Difference]: Start difference. First operand 3901 states and 6222 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:44,927 INFO L93 Difference]: Finished difference Result 10662 states and 17528 transitions. [2021-12-21 14:47:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:44,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 101 [2021-12-21 14:47:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:44,956 INFO L225 Difference]: With dead ends: 10662 [2021-12-21 14:47:44,956 INFO L226 Difference]: Without dead ends: 6905 [2021-12-21 14:47:44,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:44,969 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 913 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:44,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 710 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 14:47:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2021-12-21 14:47:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 6905. [2021-12-21 14:47:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 6903 states have (on average 1.4477763291322614) internal successors, (9994), 6904 states have internal predecessors, (9994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 9994 transitions. [2021-12-21 14:47:45,099 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 9994 transitions. Word has length 101 [2021-12-21 14:47:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:45,101 INFO L470 AbstractCegarLoop]: Abstraction has 6905 states and 9994 transitions. [2021-12-21 14:47:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 9994 transitions. [2021-12-21 14:47:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:45,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:45,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:45,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:47:45,107 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-21 14:47:45,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:45,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049964167] [2021-12-21 14:47:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:45,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:45,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049964167] [2021-12-21 14:47:45,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049964167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:45,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:45,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:45,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402643496] [2021-12-21 14:47:45,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:45,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:45,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:45,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:45,204 INFO L87 Difference]: Start difference. First operand 6905 states and 9994 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:45,247 INFO L93 Difference]: Finished difference Result 7051 states and 10226 transitions. [2021-12-21 14:47:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-21 14:47:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:45,274 INFO L225 Difference]: With dead ends: 7051 [2021-12-21 14:47:45,274 INFO L226 Difference]: Without dead ends: 6975 [2021-12-21 14:47:45,277 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:45,278 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:45,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6975 states. [2021-12-21 14:47:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6975 to 6973. [2021-12-21 14:47:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6973 states, 6971 states have (on average 1.4492899153636494) internal successors, (10103), 6972 states have internal predecessors, (10103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6973 states to 6973 states and 10103 transitions. [2021-12-21 14:47:45,416 INFO L78 Accepts]: Start accepts. Automaton has 6973 states and 10103 transitions. Word has length 106 [2021-12-21 14:47:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:45,420 INFO L470 AbstractCegarLoop]: Abstraction has 6973 states and 10103 transitions. [2021-12-21 14:47:45,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6973 states and 10103 transitions. [2021-12-21 14:47:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:45,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:45,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:45,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:47:45,423 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-21 14:47:45,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:45,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634659028] [2021-12-21 14:47:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:45,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:45,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:45,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634659028] [2021-12-21 14:47:45,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634659028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:45,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:45,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:45,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885841246] [2021-12-21 14:47:45,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:45,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:45,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:45,511 INFO L87 Difference]: Start difference. First operand 6973 states and 10103 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:45,560 INFO L93 Difference]: Finished difference Result 7249 states and 10543 transitions. [2021-12-21 14:47:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:45,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-21 14:47:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:45,585 INFO L225 Difference]: With dead ends: 7249 [2021-12-21 14:47:45,585 INFO L226 Difference]: Without dead ends: 7105 [2021-12-21 14:47:45,587 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:45,588 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:45,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2021-12-21 14:47:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 7103. [2021-12-21 14:47:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7103 states, 7101 states have (on average 1.4519081819462047) internal successors, (10310), 7102 states have internal predecessors, (10310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 10310 transitions. [2021-12-21 14:47:45,793 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 10310 transitions. Word has length 106 [2021-12-21 14:47:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:45,794 INFO L470 AbstractCegarLoop]: Abstraction has 7103 states and 10310 transitions. [2021-12-21 14:47:45,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 10310 transitions. [2021-12-21 14:47:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:45,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:45,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:45,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:47:45,796 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-21 14:47:45,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:45,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405727806] [2021-12-21 14:47:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:45,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:45,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:45,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405727806] [2021-12-21 14:47:45,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405727806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:45,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:45,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:45,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441058401] [2021-12-21 14:47:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:45,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:45,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:45,873 INFO L87 Difference]: Start difference. First operand 7103 states and 10310 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:45,922 INFO L93 Difference]: Finished difference Result 7627 states and 11144 transitions. [2021-12-21 14:47:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:45,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-21 14:47:45,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:45,936 INFO L225 Difference]: With dead ends: 7627 [2021-12-21 14:47:45,937 INFO L226 Difference]: Without dead ends: 7353 [2021-12-21 14:47:45,939 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:45,940 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:45,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2021-12-21 14:47:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7351. [2021-12-21 14:47:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7349 states have (on average 1.456252551367533) internal successors, (10702), 7350 states have internal predecessors, (10702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 10702 transitions. [2021-12-21 14:47:46,054 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 10702 transitions. Word has length 106 [2021-12-21 14:47:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:46,055 INFO L470 AbstractCegarLoop]: Abstraction has 7351 states and 10702 transitions. [2021-12-21 14:47:46,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 10702 transitions. [2021-12-21 14:47:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:46,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:46,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:46,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:47:46,057 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-21 14:47:46,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:46,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405315439] [2021-12-21 14:47:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:46,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:46,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:46,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405315439] [2021-12-21 14:47:46,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405315439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:46,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:46,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:46,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054567693] [2021-12-21 14:47:46,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:46,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:46,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:46,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:46,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:46,112 INFO L87 Difference]: Start difference. First operand 7351 states and 10702 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:46,177 INFO L93 Difference]: Finished difference Result 8347 states and 12280 transitions. [2021-12-21 14:47:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:46,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-21 14:47:46,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:46,191 INFO L225 Difference]: With dead ends: 8347 [2021-12-21 14:47:46,192 INFO L226 Difference]: Without dead ends: 7825 [2021-12-21 14:47:46,195 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:46,196 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:46,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:46,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7825 states. [2021-12-21 14:47:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7825 to 7823. [2021-12-21 14:47:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7821 states have (on average 1.4629842731108553) internal successors, (11442), 7822 states have internal predecessors, (11442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 11442 transitions. [2021-12-21 14:47:46,328 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 11442 transitions. Word has length 106 [2021-12-21 14:47:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:46,328 INFO L470 AbstractCegarLoop]: Abstraction has 7823 states and 11442 transitions. [2021-12-21 14:47:46,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 11442 transitions. [2021-12-21 14:47:46,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:46,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:46,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:46,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:47:46,330 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-21 14:47:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:46,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934755361] [2021-12-21 14:47:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:46,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:46,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:46,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934755361] [2021-12-21 14:47:46,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934755361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:46,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:46,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:47:46,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683058136] [2021-12-21 14:47:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:46,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:47:46,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:46,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:47:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:47:46,438 INFO L87 Difference]: Start difference. First operand 7823 states and 11442 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:47,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:47,457 INFO L93 Difference]: Finished difference Result 23727 states and 36546 transitions. [2021-12-21 14:47:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 14:47:47,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-21 14:47:47,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:47,510 INFO L225 Difference]: With dead ends: 23727 [2021-12-21 14:47:47,511 INFO L226 Difference]: Without dead ends: 22733 [2021-12-21 14:47:47,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-21 14:47:47,526 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:47,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:47:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22733 states. [2021-12-21 14:47:47,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22733 to 8815. [2021-12-21 14:47:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 8813 states have (on average 1.472597299444003) internal successors, (12978), 8814 states have internal predecessors, (12978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 12978 transitions. [2021-12-21 14:47:47,950 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 12978 transitions. Word has length 106 [2021-12-21 14:47:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:47,951 INFO L470 AbstractCegarLoop]: Abstraction has 8815 states and 12978 transitions. [2021-12-21 14:47:47,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 12978 transitions. [2021-12-21 14:47:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:47,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:47,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:47,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:47:47,954 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:47,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-21 14:47:47,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:47,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680723243] [2021-12-21 14:47:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:47,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:48,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680723243] [2021-12-21 14:47:48,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680723243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:48,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:48,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:48,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695424936] [2021-12-21 14:47:48,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:48,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:48,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:48,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:48,012 INFO L87 Difference]: Start difference. First operand 8815 states and 12978 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:48,303 INFO L93 Difference]: Finished difference Result 11757 states and 17574 transitions. [2021-12-21 14:47:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:48,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-21 14:47:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:48,325 INFO L225 Difference]: With dead ends: 11757 [2021-12-21 14:47:48,325 INFO L226 Difference]: Without dead ends: 9771 [2021-12-21 14:47:48,331 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:48,332 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:48,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2021-12-21 14:47:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2021-12-21 14:47:48,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9769 states, 9767 states have (on average 1.4788573768813351) internal successors, (14444), 9768 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 14444 transitions. [2021-12-21 14:47:48,621 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 14444 transitions. Word has length 108 [2021-12-21 14:47:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:48,622 INFO L470 AbstractCegarLoop]: Abstraction has 9769 states and 14444 transitions. [2021-12-21 14:47:48,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 14444 transitions. [2021-12-21 14:47:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:48,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:48,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:48,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:47:48,624 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-21 14:47:48,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:48,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706910473] [2021-12-21 14:47:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:48,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:48,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:48,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706910473] [2021-12-21 14:47:48,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706910473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:48,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:48,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:47:48,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21900807] [2021-12-21 14:47:48,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:48,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:47:48,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:47:48,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:47:48,910 INFO L87 Difference]: Start difference. First operand 9769 states and 14444 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:49,515 INFO L93 Difference]: Finished difference Result 12709 states and 19014 transitions. [2021-12-21 14:47:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:47:49,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-21 14:47:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:49,533 INFO L225 Difference]: With dead ends: 12709 [2021-12-21 14:47:49,533 INFO L226 Difference]: Without dead ends: 9771 [2021-12-21 14:47:49,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:47:49,539 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 6630 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6630 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:49,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6630 Valid, 2490 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:47:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2021-12-21 14:47:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2021-12-21 14:47:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9769 states, 9767 states have (on average 1.4764001228627008) internal successors, (14420), 9768 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 14420 transitions. [2021-12-21 14:47:49,853 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 14420 transitions. Word has length 108 [2021-12-21 14:47:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:49,853 INFO L470 AbstractCegarLoop]: Abstraction has 9769 states and 14420 transitions. [2021-12-21 14:47:49,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 14420 transitions. [2021-12-21 14:47:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:49,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:49,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:49,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:47:49,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:49,856 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-21 14:47:49,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876722855] [2021-12-21 14:47:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:49,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:49,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:49,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876722855] [2021-12-21 14:47:49,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876722855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:49,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:49,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:49,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110915689] [2021-12-21 14:47:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:49,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:49,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:49,907 INFO L87 Difference]: Start difference. First operand 9769 states and 14420 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:50,354 INFO L93 Difference]: Finished difference Result 15357 states and 23030 transitions. [2021-12-21 14:47:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:50,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-21 14:47:50,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:50,379 INFO L225 Difference]: With dead ends: 15357 [2021-12-21 14:47:50,379 INFO L226 Difference]: Without dead ends: 12419 [2021-12-21 14:47:50,389 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:50,390 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:50,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2021-12-21 14:47:50,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 12417. [2021-12-21 14:47:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12417 states, 12415 states have (on average 1.484977849375755) internal successors, (18436), 12416 states have internal predecessors, (18436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 18436 transitions. [2021-12-21 14:47:50,882 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 18436 transitions. Word has length 108 [2021-12-21 14:47:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:50,883 INFO L470 AbstractCegarLoop]: Abstraction has 12417 states and 18436 transitions. [2021-12-21 14:47:50,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 18436 transitions. [2021-12-21 14:47:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:50,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:50,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:50,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 14:47:50,884 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-21 14:47:50,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:50,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436517900] [2021-12-21 14:47:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:50,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:50,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:50,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436517900] [2021-12-21 14:47:50,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436517900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:50,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:50,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:50,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363874672] [2021-12-21 14:47:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:50,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:50,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:50,940 INFO L87 Difference]: Start difference. First operand 12417 states and 18436 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:51,744 INFO L93 Difference]: Finished difference Result 23013 states and 34598 transitions. [2021-12-21 14:47:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:51,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-21 14:47:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:51,823 INFO L225 Difference]: With dead ends: 23013 [2021-12-21 14:47:51,823 INFO L226 Difference]: Without dead ends: 17427 [2021-12-21 14:47:51,832 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:51,834 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:51,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2021-12-21 14:47:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17425. [2021-12-21 14:47:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17425 states, 17423 states have (on average 1.4888365953050566) internal successors, (25940), 17424 states have internal predecessors, (25940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:52,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17425 states to 17425 states and 25940 transitions. [2021-12-21 14:47:52,800 INFO L78 Accepts]: Start accepts. Automaton has 17425 states and 25940 transitions. Word has length 108 [2021-12-21 14:47:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:52,800 INFO L470 AbstractCegarLoop]: Abstraction has 17425 states and 25940 transitions. [2021-12-21 14:47:52,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 17425 states and 25940 transitions. [2021-12-21 14:47:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:52,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:52,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:52,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 14:47:52,802 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-21 14:47:52,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:52,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982927469] [2021-12-21 14:47:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:52,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:52,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:52,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982927469] [2021-12-21 14:47:52,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982927469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:52,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:52,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:52,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205057627] [2021-12-21 14:47:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:52,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:52,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:52,855 INFO L87 Difference]: Start difference. First operand 17425 states and 25940 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:54,132 INFO L93 Difference]: Finished difference Result 37461 states and 56150 transitions. [2021-12-21 14:47:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:54,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-21 14:47:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:54,179 INFO L225 Difference]: With dead ends: 37461 [2021-12-21 14:47:54,180 INFO L226 Difference]: Without dead ends: 26867 [2021-12-21 14:47:54,201 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:54,202 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:54,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26867 states. [2021-12-21 14:47:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26867 to 26865. [2021-12-21 14:47:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26865 states, 26863 states have (on average 1.4850165655362395) internal successors, (39892), 26864 states have internal predecessors, (39892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26865 states to 26865 states and 39892 transitions. [2021-12-21 14:47:56,143 INFO L78 Accepts]: Start accepts. Automaton has 26865 states and 39892 transitions. Word has length 108 [2021-12-21 14:47:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:56,146 INFO L470 AbstractCegarLoop]: Abstraction has 26865 states and 39892 transitions. [2021-12-21 14:47:56,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 26865 states and 39892 transitions. [2021-12-21 14:47:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:56,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:56,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:56,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 14:47:56,173 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-21 14:47:56,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:56,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784329788] [2021-12-21 14:47:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:56,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:56,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784329788] [2021-12-21 14:47:56,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784329788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:56,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:56,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:56,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739567018] [2021-12-21 14:47:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:56,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:56,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:56,288 INFO L87 Difference]: Start difference. First operand 26865 states and 39892 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:58,894 INFO L93 Difference]: Finished difference Result 64629 states and 96086 transitions. [2021-12-21 14:47:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:58,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-21 14:47:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:58,948 INFO L225 Difference]: With dead ends: 64629 [2021-12-21 14:47:58,948 INFO L226 Difference]: Without dead ends: 44595 [2021-12-21 14:47:58,968 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:47:58,969 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:58,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44595 states. [2021-12-21 14:48:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44595 to 44593. [2021-12-21 14:48:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44593 states, 44591 states have (on average 1.4730326747549953) internal successors, (65684), 44592 states have internal predecessors, (65684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:48:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44593 states to 44593 states and 65684 transitions. [2021-12-21 14:48:02,407 INFO L78 Accepts]: Start accepts. Automaton has 44593 states and 65684 transitions. Word has length 108 [2021-12-21 14:48:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:48:02,408 INFO L470 AbstractCegarLoop]: Abstraction has 44593 states and 65684 transitions. [2021-12-21 14:48:02,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:48:02,408 INFO L276 IsEmpty]: Start isEmpty. Operand 44593 states and 65684 transitions. [2021-12-21 14:48:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 14:48:02,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:48:02,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:48:02,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 14:48:02,409 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:48:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:48:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-21 14:48:02,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:48:02,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652271709] [2021-12-21 14:48:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:48:02,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:48:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:48:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:48:02,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:48:02,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652271709] [2021-12-21 14:48:02,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652271709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:48:02,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:48:02,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:48:02,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721306337] [2021-12-21 14:48:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:48:02,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:48:02,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:48:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:48:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:48:02,497 INFO L87 Difference]: Start difference. First operand 44593 states and 65684 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:48:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:48:08,307 INFO L93 Difference]: Finished difference Result 76760 states and 112261 transitions. [2021-12-21 14:48:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:48:08,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-21 14:48:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:48:08,402 INFO L225 Difference]: With dead ends: 76760 [2021-12-21 14:48:08,402 INFO L226 Difference]: Without dead ends: 76758 [2021-12-21 14:48:08,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:48:08,423 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:48:08,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:48:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76758 states. [2021-12-21 14:48:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76758 to 46129. [2021-12-21 14:48:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46129 states, 46127 states have (on average 1.454506037678583) internal successors, (67092), 46128 states have internal predecessors, (67092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:48:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46129 states to 46129 states and 67092 transitions. [2021-12-21 14:48:12,307 INFO L78 Accepts]: Start accepts. Automaton has 46129 states and 67092 transitions. Word has length 109 [2021-12-21 14:48:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:48:12,307 INFO L470 AbstractCegarLoop]: Abstraction has 46129 states and 67092 transitions. [2021-12-21 14:48:12,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:48:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 46129 states and 67092 transitions. [2021-12-21 14:48:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 14:48:12,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:48:12,327 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:48:12,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 14:48:12,328 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:48:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:48:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-21 14:48:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:48:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376252403] [2021-12-21 14:48:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:48:12,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:48:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:48:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 14:48:12,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:48:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376252403] [2021-12-21 14:48:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376252403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:48:12,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:48:12,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:48:12,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889699927] [2021-12-21 14:48:12,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:48:12,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:48:12,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:48:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:48:12,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:48:12,462 INFO L87 Difference]: Start difference. First operand 46129 states and 67092 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)