./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fd9e1e868c304b5369800f6e74fe17eb5b4635faf40e950da9c44d0d244c905 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:43:28,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:43:28,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:43:28,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:43:28,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:43:28,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:43:28,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:43:28,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:43:28,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:43:28,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:43:28,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:43:28,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:43:28,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:43:28,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:43:28,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:43:28,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:43:28,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:43:28,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:43:28,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:43:28,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:43:28,095 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:43:28,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:43:28,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:43:28,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:43:28,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:43:28,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:43:28,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:43:28,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:43:28,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:43:28,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:43:28,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:43:28,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:43:28,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:43:28,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:43:28,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:43:28,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:43:28,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:43:28,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:43:28,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:43:28,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:43:28,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:43:28,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:43:28,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:43:28,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:43:28,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:43:28,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:43:28,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:43:28,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:43:28,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:43:28,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:43:28,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:43:28,154 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:43:28,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:43:28,156 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:43:28,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:43:28,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:43:28,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:43:28,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:43:28,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:43:28,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:43:28,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:43:28,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:43:28,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:43:28,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:43:28,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:43:28,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:43:28,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:43:28,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:43:28,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:43:28,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:43:28,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:43:28,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:43:28,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:43:28,161 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:43:28,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:43:28,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:43:28,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fd9e1e868c304b5369800f6e74fe17eb5b4635faf40e950da9c44d0d244c905 [2022-07-13 20:43:28,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:43:28,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:43:28,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:43:28,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:43:28,453 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:43:28,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-13 20:43:28,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b301de6/8243127e20564d3bbeb54480409b9589/FLAG5f7839290 [2022-07-13 20:43:29,222 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:43:29,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-13 20:43:29,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b301de6/8243127e20564d3bbeb54480409b9589/FLAG5f7839290 [2022-07-13 20:43:29,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b301de6/8243127e20564d3bbeb54480409b9589 [2022-07-13 20:43:29,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:43:29,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:43:29,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:43:29,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:43:29,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:43:29,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:43:29" (1/1) ... [2022-07-13 20:43:29,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39737dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:29, skipping insertion in model container [2022-07-13 20:43:29,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:43:29" (1/1) ... [2022-07-13 20:43:29,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:43:29,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:43:29,976 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[6450,6463] [2022-07-13 20:43:30,035 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[13511,13524] [2022-07-13 20:43:30,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:43:30,629 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:43:30,679 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[6450,6463] [2022-07-13 20:43:30,688 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[13511,13524] [2022-07-13 20:43:31,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:43:31,072 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:43:31,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31 WrapperNode [2022-07-13 20:43:31,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:43:31,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:43:31,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:43:31,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:43:31,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,446 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4976 [2022-07-13 20:43:31,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:43:31,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:43:31,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:43:31,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:43:31,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:43:31,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:43:31,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:43:31,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:43:31,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (1/1) ... [2022-07-13 20:43:31,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:43:31,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:43:31,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:43:31,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:43:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:43:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:43:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:43:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:43:32,120 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:43:32,122 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:43:35,369 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:43:35,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:43:35,386 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 20:43:35,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:43:35 BoogieIcfgContainer [2022-07-13 20:43:35,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:43:35,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:43:35,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:43:35,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:43:35,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:43:29" (1/3) ... [2022-07-13 20:43:35,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b83be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:43:35, skipping insertion in model container [2022-07-13 20:43:35,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:43:31" (2/3) ... [2022-07-13 20:43:35,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b83be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:43:35, skipping insertion in model container [2022-07-13 20:43:35,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:43:35" (3/3) ... [2022-07-13 20:43:35,398 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-13 20:43:35,411 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:43:35,411 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:43:35,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:43:35,482 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4fbe6a6c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5da64f4 [2022-07-13 20:43:35,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:43:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:43:35,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:35,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:35,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:35,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2022-07-13 20:43:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:35,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943846354] [2022-07-13 20:43:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:35,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:35,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943846354] [2022-07-13 20:43:35,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943846354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:35,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:35,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:43:35,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240915343] [2022-07-13 20:43:35,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:35,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:43:35,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:43:35,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:43:35,751 INFO L87 Difference]: Start difference. First operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:35,831 INFO L93 Difference]: Finished difference Result 1736 states and 3296 transitions. [2022-07-13 20:43:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:43:35,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-13 20:43:35,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:35,854 INFO L225 Difference]: With dead ends: 1736 [2022-07-13 20:43:35,854 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:43:35,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:43:35,869 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:35,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:43:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:43:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8916256157635467) internal successors, (1536), 813 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1536 transitions. [2022-07-13 20:43:35,933 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1536 transitions. Word has length 26 [2022-07-13 20:43:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:35,934 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1536 transitions. [2022-07-13 20:43:35,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1536 transitions. [2022-07-13 20:43:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:43:35,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:35,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:35,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:43:35,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:35,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2022-07-13 20:43:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:35,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354177154] [2022-07-13 20:43:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:36,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:36,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354177154] [2022-07-13 20:43:36,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354177154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:36,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:36,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:43:36,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217437596] [2022-07-13 20:43:36,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:36,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:43:36,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:43:36,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:43:36,004 INFO L87 Difference]: Start difference. First operand 814 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:36,087 INFO L93 Difference]: Finished difference Result 856 states and 1599 transitions. [2022-07-13 20:43:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:43:36,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-13 20:43:36,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:36,091 INFO L225 Difference]: With dead ends: 856 [2022-07-13 20:43:36,091 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:43:36,092 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:43:36,093 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6117 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:36,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:43:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:43:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8719211822660098) internal successors, (1520), 813 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1520 transitions. [2022-07-13 20:43:36,112 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1520 transitions. Word has length 26 [2022-07-13 20:43:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:36,113 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1520 transitions. [2022-07-13 20:43:36,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1520 transitions. [2022-07-13 20:43:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:43:36,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:36,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:36,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:43:36,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2022-07-13 20:43:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:36,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743038751] [2022-07-13 20:43:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:36,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:36,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743038751] [2022-07-13 20:43:36,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743038751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:36,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:36,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:43:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156459483] [2022-07-13 20:43:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:43:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:36,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:43:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:36,181 INFO L87 Difference]: Start difference. First operand 814 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:36,232 INFO L93 Difference]: Finished difference Result 884 states and 1628 transitions. [2022-07-13 20:43:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:43:36,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:43:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:36,236 INFO L225 Difference]: With dead ends: 884 [2022-07-13 20:43:36,238 INFO L226 Difference]: Without dead ends: 846 [2022-07-13 20:43:36,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:36,241 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1484 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1610 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 [2022-07-13 20:43:36,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1610 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-07-13 20:43:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2022-07-13 20:43:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 842 states have (on average 1.8610451306413303) internal successors, (1567), 843 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1567 transitions. [2022-07-13 20:43:36,260 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1567 transitions. Word has length 41 [2022-07-13 20:43:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:36,260 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1567 transitions. [2022-07-13 20:43:36,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1567 transitions. [2022-07-13 20:43:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:43:36,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:36,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:36,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:43:36,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2022-07-13 20:43:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:36,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485919353] [2022-07-13 20:43:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:36,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:36,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485919353] [2022-07-13 20:43:36,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485919353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:36,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:36,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:43:36,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121307325] [2022-07-13 20:43:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:36,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:43:36,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:36,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:43:36,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:36,394 INFO L87 Difference]: Start difference. First operand 844 states and 1567 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:36,429 INFO L93 Difference]: Finished difference Result 968 states and 1759 transitions. [2022-07-13 20:43:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:43:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:43:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:36,434 INFO L225 Difference]: With dead ends: 968 [2022-07-13 20:43:36,434 INFO L226 Difference]: Without dead ends: 900 [2022-07-13 20:43:36,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:36,435 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1609 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 [2022-07-13 20:43:36,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:36,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-07-13 20:43:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 898. [2022-07-13 20:43:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 896 states have (on average 1.8415178571428572) internal successors, (1650), 897 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1650 transitions. [2022-07-13 20:43:36,455 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1650 transitions. Word has length 41 [2022-07-13 20:43:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:36,455 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1650 transitions. [2022-07-13 20:43:36,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1650 transitions. [2022-07-13 20:43:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:43:36,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:36,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:36,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:43:36,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2022-07-13 20:43:36,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:36,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494727917] [2022-07-13 20:43:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:36,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:36,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:36,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494727917] [2022-07-13 20:43:36,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494727917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:36,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:36,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:43:36,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722304625] [2022-07-13 20:43:36,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:36,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:43:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:43:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:43:36,517 INFO L87 Difference]: Start difference. First operand 898 states and 1650 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:36,647 INFO L93 Difference]: Finished difference Result 1630 states and 2784 transitions. [2022-07-13 20:43:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:43:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:43:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:36,654 INFO L225 Difference]: With dead ends: 1630 [2022-07-13 20:43:36,654 INFO L226 Difference]: Without dead ends: 1508 [2022-07-13 20:43:36,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:43:36,656 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 4693 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:36,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 1934 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-07-13 20:43:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1018. [2022-07-13 20:43:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1016 states have (on average 1.8011811023622046) internal successors, (1830), 1017 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1830 transitions. [2022-07-13 20:43:36,686 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1830 transitions. Word has length 41 [2022-07-13 20:43:36,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:36,687 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1830 transitions. [2022-07-13 20:43:36,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1830 transitions. [2022-07-13 20:43:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:43:36,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:36,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:36,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:43:36,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2022-07-13 20:43:36,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:36,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273058011] [2022-07-13 20:43:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:36,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:36,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:36,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273058011] [2022-07-13 20:43:36,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273058011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:36,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:36,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:43:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058208995] [2022-07-13 20:43:36,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:36,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:43:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:43:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:36,732 INFO L87 Difference]: Start difference. First operand 1018 states and 1830 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:36,783 INFO L93 Difference]: Finished difference Result 1458 states and 2492 transitions. [2022-07-13 20:43:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:43:36,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-13 20:43:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:36,788 INFO L225 Difference]: With dead ends: 1458 [2022-07-13 20:43:36,788 INFO L226 Difference]: Without dead ends: 1216 [2022-07-13 20:43:36,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:36,790 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1471 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:36,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1569 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-07-13 20:43:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1206. [2022-07-13 20:43:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1204 states have (on average 1.739202657807309) internal successors, (2094), 1205 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2094 transitions. [2022-07-13 20:43:36,827 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2094 transitions. Word has length 43 [2022-07-13 20:43:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:36,829 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2094 transitions. [2022-07-13 20:43:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2094 transitions. [2022-07-13 20:43:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:43:36,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:36,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:43:36,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2022-07-13 20:43:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:36,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624998896] [2022-07-13 20:43:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:36,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:36,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624998896] [2022-07-13 20:43:36,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624998896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:36,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:36,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:43:36,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817293547] [2022-07-13 20:43:36,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:36,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:43:36,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:36,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:43:36,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:43:36,919 INFO L87 Difference]: Start difference. First operand 1206 states and 2094 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:37,008 INFO L93 Difference]: Finished difference Result 1638 states and 2728 transitions. [2022-07-13 20:43:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:43:37,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-13 20:43:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:37,014 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 20:43:37,014 INFO L226 Difference]: Without dead ends: 1208 [2022-07-13 20:43:37,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:43:37,016 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 1531 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:37,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1680 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-07-13 20:43:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2022-07-13 20:43:37,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1204 states have (on average 1.7325581395348837) internal successors, (2086), 1205 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2086 transitions. [2022-07-13 20:43:37,060 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2086 transitions. Word has length 43 [2022-07-13 20:43:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:37,060 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2086 transitions. [2022-07-13 20:43:37,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2086 transitions. [2022-07-13 20:43:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 20:43:37,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:37,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:37,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:43:37,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2022-07-13 20:43:37,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:37,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657495784] [2022-07-13 20:43:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:37,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:37,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657495784] [2022-07-13 20:43:37,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657495784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:37,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:37,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:43:37,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697367881] [2022-07-13 20:43:37,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:37,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:43:37,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:43:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:43:37,198 INFO L87 Difference]: Start difference. First operand 1206 states and 2086 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:37,361 INFO L93 Difference]: Finished difference Result 1540 states and 2558 transitions. [2022-07-13 20:43:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:43:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-13 20:43:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:37,368 INFO L225 Difference]: With dead ends: 1540 [2022-07-13 20:43:37,368 INFO L226 Difference]: Without dead ends: 1538 [2022-07-13 20:43:37,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 20:43:37,370 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 396 mSDsluCounter, 8921 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 10473 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:37,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 10473 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-07-13 20:43:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1230. [2022-07-13 20:43:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1228 states have (on average 1.714983713355049) internal successors, (2106), 1229 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2106 transitions. [2022-07-13 20:43:37,416 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2106 transitions. Word has length 44 [2022-07-13 20:43:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:37,417 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 2106 transitions. [2022-07-13 20:43:37,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2106 transitions. [2022-07-13 20:43:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 20:43:37,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:37,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:37,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:43:37,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2022-07-13 20:43:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:37,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720955500] [2022-07-13 20:43:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:37,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:37,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720955500] [2022-07-13 20:43:37,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720955500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:37,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:37,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:43:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548986768] [2022-07-13 20:43:37,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:37,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:43:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:43:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:37,447 INFO L87 Difference]: Start difference. First operand 1230 states and 2106 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:37,509 INFO L93 Difference]: Finished difference Result 1701 states and 2784 transitions. [2022-07-13 20:43:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:43:37,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-07-13 20:43:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:37,515 INFO L225 Difference]: With dead ends: 1701 [2022-07-13 20:43:37,515 INFO L226 Difference]: Without dead ends: 1434 [2022-07-13 20:43:37,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:37,516 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1485 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1615 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 [2022-07-13 20:43:37,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1615 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:37,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-07-13 20:43:37,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1432. [2022-07-13 20:43:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1430 states have (on average 1.6671328671328671) internal successors, (2384), 1431 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2384 transitions. [2022-07-13 20:43:37,575 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2384 transitions. Word has length 45 [2022-07-13 20:43:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:37,575 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2384 transitions. [2022-07-13 20:43:37,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2384 transitions. [2022-07-13 20:43:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 20:43:37,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:37,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:43:37,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash 707245808, now seen corresponding path program 1 times [2022-07-13 20:43:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:37,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459744887] [2022-07-13 20:43:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:37,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:37,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459744887] [2022-07-13 20:43:37,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459744887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:37,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:37,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:43:37,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911852492] [2022-07-13 20:43:37,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:43:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:43:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:43:37,638 INFO L87 Difference]: Start difference. First operand 1432 states and 2384 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:43,491 INFO L93 Difference]: Finished difference Result 3687 states and 6693 transitions. [2022-07-13 20:43:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:43:43,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-13 20:43:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:43,506 INFO L225 Difference]: With dead ends: 3687 [2022-07-13 20:43:43,507 INFO L226 Difference]: Without dead ends: 2934 [2022-07-13 20:43:43,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:43:43,509 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 2345 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:43,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 774 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-13 20:43:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2022-07-13 20:43:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2934. [2022-07-13 20:43:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2932 states have (on average 1.534106412005457) internal successors, (4498), 2933 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4498 transitions. [2022-07-13 20:43:43,656 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4498 transitions. Word has length 61 [2022-07-13 20:43:43,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:43,657 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4498 transitions. [2022-07-13 20:43:43,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4498 transitions. [2022-07-13 20:43:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:43:43,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:43,659 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:43:43,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:43:43,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash -393288849, now seen corresponding path program 1 times [2022-07-13 20:43:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:43,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134529124] [2022-07-13 20:43:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:43,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 20:43:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134529124] [2022-07-13 20:43:43,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134529124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:43,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:43,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:43:43,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127707027] [2022-07-13 20:43:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:43,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:43:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:43,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:43:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:43:43,734 INFO L87 Difference]: Start difference. First operand 2934 states and 4498 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:43,963 INFO L93 Difference]: Finished difference Result 5038 states and 7450 transitions. [2022-07-13 20:43:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:43:43,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 64 [2022-07-13 20:43:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:43,981 INFO L225 Difference]: With dead ends: 5038 [2022-07-13 20:43:43,982 INFO L226 Difference]: Without dead ends: 4384 [2022-07-13 20:43:43,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:43:43,985 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3088 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:43,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3088 Valid, 3191 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-07-13 20:43:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 3586. [2022-07-13 20:43:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3584 states have (on average 1.5083705357142858) internal successors, (5406), 3585 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5406 transitions. [2022-07-13 20:43:44,149 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5406 transitions. Word has length 64 [2022-07-13 20:43:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:44,149 INFO L495 AbstractCegarLoop]: Abstraction has 3586 states and 5406 transitions. [2022-07-13 20:43:44,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5406 transitions. [2022-07-13 20:43:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:43:44,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:44,152 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:43:44,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:43:44,153 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:44,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2132895631, now seen corresponding path program 1 times [2022-07-13 20:43:44,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:44,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943828129] [2022-07-13 20:43:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:44,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 20:43:44,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:44,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943828129] [2022-07-13 20:43:44,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943828129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:44,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:44,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:43:44,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082846566] [2022-07-13 20:43:44,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:44,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:43:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:44,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:43:44,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:43:44,218 INFO L87 Difference]: Start difference. First operand 3586 states and 5406 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:44,486 INFO L93 Difference]: Finished difference Result 5690 states and 8358 transitions. [2022-07-13 20:43:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:43:44,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 64 [2022-07-13 20:43:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:44,505 INFO L225 Difference]: With dead ends: 5690 [2022-07-13 20:43:44,506 INFO L226 Difference]: Without dead ends: 5036 [2022-07-13 20:43:44,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:43:44,511 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3082 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:44,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3082 Valid, 3206 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-07-13 20:43:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4566. [2022-07-13 20:43:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4566 states, 4564 states have (on average 1.4807186678352322) internal successors, (6758), 4565 states have internal predecessors, (6758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 6758 transitions. [2022-07-13 20:43:44,786 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 6758 transitions. Word has length 64 [2022-07-13 20:43:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:44,786 INFO L495 AbstractCegarLoop]: Abstraction has 4566 states and 6758 transitions. [2022-07-13 20:43:44,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 6758 transitions. [2022-07-13 20:43:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:43:44,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:44,788 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:43:44,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:43:44,788 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1342668761, now seen corresponding path program 1 times [2022-07-13 20:43:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:44,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632204991] [2022-07-13 20:43:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:44,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:44,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:44,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632204991] [2022-07-13 20:43:44,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632204991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:44,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:44,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:43:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841573349] [2022-07-13 20:43:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:44,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:43:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:43:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:44,843 INFO L87 Difference]: Start difference. First operand 4566 states and 6758 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:45,004 INFO L93 Difference]: Finished difference Result 6216 states and 9082 transitions. [2022-07-13 20:43:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:43:45,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-13 20:43:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:45,031 INFO L225 Difference]: With dead ends: 6216 [2022-07-13 20:43:45,031 INFO L226 Difference]: Without dead ends: 3930 [2022-07-13 20:43:45,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:43:45,036 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 36 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:45,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3048 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2022-07-13 20:43:45,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3928. [2022-07-13 20:43:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3926 states have (on average 1.4954151808456444) internal successors, (5871), 3927 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5871 transitions. [2022-07-13 20:43:45,216 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5871 transitions. Word has length 66 [2022-07-13 20:43:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:45,216 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 5871 transitions. [2022-07-13 20:43:45,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5871 transitions. [2022-07-13 20:43:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:43:45,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:45,218 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:43:45,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 20:43:45,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash -366937100, now seen corresponding path program 1 times [2022-07-13 20:43:45,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:45,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310407549] [2022-07-13 20:43:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:45,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:43:45,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:45,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310407549] [2022-07-13 20:43:45,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310407549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:43:45,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:43:45,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:43:45,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745901481] [2022-07-13 20:43:45,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:43:45,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:43:45,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:45,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:43:45,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:43:45,268 INFO L87 Difference]: Start difference. First operand 3928 states and 5871 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:45,536 INFO L93 Difference]: Finished difference Result 5328 states and 7843 transitions. [2022-07-13 20:43:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:43:45,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 66 [2022-07-13 20:43:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:45,545 INFO L225 Difference]: With dead ends: 5328 [2022-07-13 20:43:45,546 INFO L226 Difference]: Without dead ends: 4862 [2022-07-13 20:43:45,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:43:45,548 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3074 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:45,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 3215 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:43:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2022-07-13 20:43:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4392. [2022-07-13 20:43:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4390 states have (on average 1.4849658314350798) internal successors, (6519), 4391 states have internal predecessors, (6519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 6519 transitions. [2022-07-13 20:43:45,757 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 6519 transitions. Word has length 66 [2022-07-13 20:43:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:45,758 INFO L495 AbstractCegarLoop]: Abstraction has 4392 states and 6519 transitions. [2022-07-13 20:43:45,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 6519 transitions. [2022-07-13 20:43:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:43:45,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:45,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:45,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 20:43:45,760 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1328887140, now seen corresponding path program 1 times [2022-07-13 20:43:45,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:45,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567617228] [2022-07-13 20:43:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:45,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:45,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:45,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567617228] [2022-07-13 20:43:45,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567617228] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:43:45,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90824576] [2022-07-13 20:43:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:46,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:43:46,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:43:46,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:43:46,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:43:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:46,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:43:46,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:43:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:43:46,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:43:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:43:46,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90824576] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:43:46,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:43:46,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-13 20:43:46,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202248882] [2022-07-13 20:43:46,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:43:46,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 20:43:46,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:46,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 20:43:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 20:43:46,605 INFO L87 Difference]: Start difference. First operand 4392 states and 6519 transitions. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:51,717 INFO L93 Difference]: Finished difference Result 24772 states and 34364 transitions. [2022-07-13 20:43:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-13 20:43:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 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 67 [2022-07-13 20:43:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:51,759 INFO L225 Difference]: With dead ends: 24772 [2022-07-13 20:43:51,760 INFO L226 Difference]: Without dead ends: 22682 [2022-07-13 20:43:51,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4630 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2148, Invalid=10062, Unknown=0, NotChecked=0, Total=12210 [2022-07-13 20:43:51,773 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 13668 mSDsluCounter, 5137 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13668 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:51,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13668 Valid, 6692 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:43:51,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22682 states. [2022-07-13 20:43:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22682 to 13305. [2022-07-13 20:43:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13305 states, 13303 states have (on average 1.3753288731864992) internal successors, (18296), 13304 states have internal predecessors, (18296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 18296 transitions. [2022-07-13 20:43:52,950 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 18296 transitions. Word has length 67 [2022-07-13 20:43:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:52,950 INFO L495 AbstractCegarLoop]: Abstraction has 13305 states and 18296 transitions. [2022-07-13 20:43:52,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 18296 transitions. [2022-07-13 20:43:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:43:52,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:52,952 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:43:52,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:43:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 20:43:53,174 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash 620602156, now seen corresponding path program 1 times [2022-07-13 20:43:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:53,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790836246] [2022-07-13 20:43:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:53,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:53,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790836246] [2022-07-13 20:43:53,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790836246] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:43:53,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004111603] [2022-07-13 20:43:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:53,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:43:53,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:43:53,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:43:53,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:43:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:53,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 20:43:53,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:43:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:53,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:43:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:54,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004111603] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:43:54,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:43:54,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-07-13 20:43:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546277087] [2022-07-13 20:43:54,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:43:54,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 20:43:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:43:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 20:43:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-13 20:43:54,364 INFO L87 Difference]: Start difference. First operand 13305 states and 18296 transitions. Second operand has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:12,346 INFO L93 Difference]: Finished difference Result 146293 states and 191862 transitions. [2022-07-13 20:44:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-07-13 20:44:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 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 68 [2022-07-13 20:44:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:12,688 INFO L225 Difference]: With dead ends: 146293 [2022-07-13 20:44:12,688 INFO L226 Difference]: Without dead ends: 136108 [2022-07-13 20:44:12,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8692 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3558, Invalid=20934, Unknown=0, NotChecked=0, Total=24492 [2022-07-13 20:44:12,741 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 25967 mSDsluCounter, 9087 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25967 SdHoareTripleChecker+Valid, 10709 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:12,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25967 Valid, 10709 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 20:44:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136108 states. [2022-07-13 20:44:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136108 to 54762. [2022-07-13 20:44:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54762 states, 54760 states have (on average 1.3221146822498173) internal successors, (72399), 54761 states have internal predecessors, (72399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54762 states to 54762 states and 72399 transitions. [2022-07-13 20:44:19,784 INFO L78 Accepts]: Start accepts. Automaton has 54762 states and 72399 transitions. Word has length 68 [2022-07-13 20:44:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:19,784 INFO L495 AbstractCegarLoop]: Abstraction has 54762 states and 72399 transitions. [2022-07-13 20:44:19,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand 54762 states and 72399 transitions. [2022-07-13 20:44:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:44:19,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:19,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:44:19,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:44:20,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 20:44:20,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1702537876, now seen corresponding path program 1 times [2022-07-13 20:44:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:20,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056784782] [2022-07-13 20:44:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:44:20,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:20,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056784782] [2022-07-13 20:44:20,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056784782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:20,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:20,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:44:20,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839248699] [2022-07-13 20:44:20,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:20,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:20,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:20,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:20,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:20,192 INFO L87 Difference]: Start difference. First operand 54762 states and 72399 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:23,308 INFO L93 Difference]: Finished difference Result 79200 states and 103942 transitions. [2022-07-13 20:44:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:23,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:44:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:23,357 INFO L225 Difference]: With dead ends: 79200 [2022-07-13 20:44:23,357 INFO L226 Difference]: Without dead ends: 32120 [2022-07-13 20:44:23,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:23,396 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 26 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:23,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3030 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32120 states. [2022-07-13 20:44:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32120 to 31692. [2022-07-13 20:44:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31692 states, 31690 states have (on average 1.2933733038813506) internal successors, (40987), 31691 states have internal predecessors, (40987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31692 states to 31692 states and 40987 transitions. [2022-07-13 20:44:26,371 INFO L78 Accepts]: Start accepts. Automaton has 31692 states and 40987 transitions. Word has length 68 [2022-07-13 20:44:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:26,371 INFO L495 AbstractCegarLoop]: Abstraction has 31692 states and 40987 transitions. [2022-07-13 20:44:26,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 31692 states and 40987 transitions. [2022-07-13 20:44:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:44:26,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:26,374 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:44:26,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:44:26,374 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 455030260, now seen corresponding path program 1 times [2022-07-13 20:44:26,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:26,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199995572] [2022-07-13 20:44:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:26,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:44:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:26,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199995572] [2022-07-13 20:44:26,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199995572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:26,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:26,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:44:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712782197] [2022-07-13 20:44:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:44:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:44:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:26,407 INFO L87 Difference]: Start difference. First operand 31692 states and 40987 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:28,572 INFO L93 Difference]: Finished difference Result 47678 states and 61201 transitions. [2022-07-13 20:44:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:44:28,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:44:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:28,596 INFO L225 Difference]: With dead ends: 47678 [2022-07-13 20:44:28,596 INFO L226 Difference]: Without dead ends: 21614 [2022-07-13 20:44:28,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:44:28,613 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 20 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:28,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21614 states. [2022-07-13 20:44:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21614 to 21612. [2022-07-13 20:44:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21612 states, 21610 states have (on average 1.2746876446089774) internal successors, (27546), 21611 states have internal predecessors, (27546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21612 states to 21612 states and 27546 transitions. [2022-07-13 20:44:30,531 INFO L78 Accepts]: Start accepts. Automaton has 21612 states and 27546 transitions. Word has length 68 [2022-07-13 20:44:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:30,531 INFO L495 AbstractCegarLoop]: Abstraction has 21612 states and 27546 transitions. [2022-07-13 20:44:30,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 21612 states and 27546 transitions. [2022-07-13 20:44:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:44:30,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:30,533 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:44:30,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:44:30,533 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash 530169440, now seen corresponding path program 1 times [2022-07-13 20:44:30,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:30,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498917996] [2022-07-13 20:44:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 20:44:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:30,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498917996] [2022-07-13 20:44:30,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498917996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:30,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:30,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:30,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194047189] [2022-07-13 20:44:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:30,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:44:30,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:44:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:44:30,577 INFO L87 Difference]: Start difference. First operand 21612 states and 27546 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:32,330 INFO L93 Difference]: Finished difference Result 37375 states and 47271 transitions. [2022-07-13 20:44:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:44:32,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 68 [2022-07-13 20:44:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:32,350 INFO L225 Difference]: With dead ends: 37375 [2022-07-13 20:44:32,350 INFO L226 Difference]: Without dead ends: 18128 [2022-07-13 20:44:32,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:44:32,366 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4553 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:32,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 2957 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18128 states. [2022-07-13 20:44:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18128 to 18128. [2022-07-13 20:44:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18128 states, 18126 states have (on average 1.2665783956747214) internal successors, (22958), 18127 states have internal predecessors, (22958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18128 states to 18128 states and 22958 transitions. [2022-07-13 20:44:34,194 INFO L78 Accepts]: Start accepts. Automaton has 18128 states and 22958 transitions. Word has length 68 [2022-07-13 20:44:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:34,195 INFO L495 AbstractCegarLoop]: Abstraction has 18128 states and 22958 transitions. [2022-07-13 20:44:34,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 18128 states and 22958 transitions. [2022-07-13 20:44:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:44:34,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:34,196 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:44:34,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:44:34,197 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:34,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1360814688, now seen corresponding path program 1 times [2022-07-13 20:44:34,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:34,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869644731] [2022-07-13 20:44:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 20:44:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:34,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869644731] [2022-07-13 20:44:34,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869644731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:34,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:34,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091870887] [2022-07-13 20:44:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:44:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:44:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:44:34,238 INFO L87 Difference]: Start difference. First operand 18128 states and 22958 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:35,554 INFO L93 Difference]: Finished difference Result 29739 states and 37209 transitions. [2022-07-13 20:44:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:44:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 68 [2022-07-13 20:44:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:35,569 INFO L225 Difference]: With dead ends: 29739 [2022-07-13 20:44:35,569 INFO L226 Difference]: Without dead ends: 14008 [2022-07-13 20:44:35,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:44:35,581 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4558 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4558 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:35,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4558 Valid, 2955 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14008 states. [2022-07-13 20:44:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14008 to 14008. [2022-07-13 20:44:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14008 states, 14006 states have (on average 1.2621019563044409) internal successors, (17677), 14007 states have internal predecessors, (17677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14008 states to 14008 states and 17677 transitions. [2022-07-13 20:44:37,436 INFO L78 Accepts]: Start accepts. Automaton has 14008 states and 17677 transitions. Word has length 68 [2022-07-13 20:44:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:44:37,436 INFO L495 AbstractCegarLoop]: Abstraction has 14008 states and 17677 transitions. [2022-07-13 20:44:37,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 14008 states and 17677 transitions. [2022-07-13 20:44:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:44:37,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:44:37,438 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:44:37,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:44:37,438 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:44:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:44:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1355942016, now seen corresponding path program 1 times [2022-07-13 20:44:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:44:37,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977188624] [2022-07-13 20:44:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:44:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:44:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:44:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 20:44:37,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:44:37,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977188624] [2022-07-13 20:44:37,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977188624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:44:37,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:44:37,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:44:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712916024] [2022-07-13 20:44:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:44:37,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:44:37,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:44:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:44:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:44:37,483 INFO L87 Difference]: Start difference. First operand 14008 states and 17677 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:44:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:44:38,702 INFO L93 Difference]: Finished difference Result 23014 states and 28602 transitions. [2022-07-13 20:44:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:44:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 68 [2022-07-13 20:44:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:44:38,715 INFO L225 Difference]: With dead ends: 23014 [2022-07-13 20:44:38,715 INFO L226 Difference]: Without dead ends: 11324 [2022-07-13 20:44:38,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:44:38,724 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4519 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:44:38,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 2956 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:44:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11324 states.