./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label31.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 781b4c30281e668acaf3c14c6cf74c491996fd51fc229d130e4fc767358d6ab3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:33:55,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:33:55,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:33:55,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:33:55,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:33:55,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:33:55,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:33:55,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:33:55,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:33:55,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:33:55,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:33:55,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:33:55,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:33:55,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:33:55,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:33:55,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:33:55,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:33:55,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:33:55,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:33:55,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:33:55,925 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:33:55,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:33:55,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:33:55,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:33:55,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:33:55,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:33:55,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:33:55,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:33:55,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:33:55,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:33:55,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:33:55,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:33:55,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:33:55,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:33:55,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:33:55,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:33:55,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:33:55,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:33:55,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:33:55,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:33:55,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:33:55,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:33:55,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:33:55,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:33:55,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:33:55,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:33:55,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:33:55,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:33:55,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:33:55,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:33:55,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:33:55,974 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:33:55,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:33:55,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:33:55,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:33:55,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:33:55,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:33:55,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:33:55,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:33:55,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:33:55,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:33:55,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:33:55,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:33:55,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:33:55,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:33:55,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:33:55,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:33:55,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:33:55,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:33:55,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:33:55,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:33:55,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:33:55,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:33:55,979 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:33:55,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:33:55,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:33:55,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781b4c30281e668acaf3c14c6cf74c491996fd51fc229d130e4fc767358d6ab3 [2022-07-22 12:33:56,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:33:56,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:33:56,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:33:56,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:33:56,205 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:33:56,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label31.c [2022-07-22 12:33:56,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099665ce0/91477770544a4e70ab46837bace32147/FLAG653aabcd5 [2022-07-22 12:33:56,817 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:33:56,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label31.c [2022-07-22 12:33:56,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099665ce0/91477770544a4e70ab46837bace32147/FLAG653aabcd5 [2022-07-22 12:33:56,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099665ce0/91477770544a4e70ab46837bace32147 [2022-07-22 12:33:56,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:33:57,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:33:57,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:33:57,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:33:57,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:33:57,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:33:56" (1/1) ... [2022-07-22 12:33:57,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77970ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:57, skipping insertion in model container [2022-07-22 12:33:57,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:33:56" (1/1) ... [2022-07-22 12:33:57,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:33:57,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:33:57,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label31.c[5792,5805] [2022-07-22 12:33:57,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:33:57,888 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:33:57,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label31.c[5792,5805] [2022-07-22 12:33:58,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:33:58,263 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:33:58,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58 WrapperNode [2022-07-22 12:33:58,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:33:58,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:33:58,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:33:58,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:33:58,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:58,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:58,742 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-22 12:33:58,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:33:58,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:33:58,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:33:58,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:33:58,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:58,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:58,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:58,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:59,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:59,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:59,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:59,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:33:59,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:33:59,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:33:59,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:33:59,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (1/1) ... [2022-07-22 12:33:59,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:33:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:33:59,319 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) [2022-07-22 12:33:59,333 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 [2022-07-22 12:33:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:33:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:33:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:33:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:33:59,445 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:33:59,446 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:34:02,798 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:34:02,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:34:02,814 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:34:02,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:34:02 BoogieIcfgContainer [2022-07-22 12:34:02,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:34:02,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:34:02,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:34:02,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:34:02,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:33:56" (1/3) ... [2022-07-22 12:34:02,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67066804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:34:02, skipping insertion in model container [2022-07-22 12:34:02,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:58" (2/3) ... [2022-07-22 12:34:02,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67066804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:34:02, skipping insertion in model container [2022-07-22 12:34:02,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:34:02" (3/3) ... [2022-07-22 12:34:02,824 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label31.c [2022-07-22 12:34:02,834 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:34:02,834 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:34:02,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:34:02,945 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@4a2cdd6b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@280428d9 [2022-07-22 12:34:02,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:34:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 12:34:02,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:02,963 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] [2022-07-22 12:34:02,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2102454322, now seen corresponding path program 1 times [2022-07-22 12:34:02,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:02,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294745701] [2022-07-22 12:34:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:02,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:34:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:03,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294745701] [2022-07-22 12:34:03,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294745701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:03,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:03,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:03,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248644063] [2022-07-22 12:34:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:03,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:03,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:03,215 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:06,585 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2022-07-22 12:34:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-07-22 12:34:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:06,602 INFO L225 Difference]: With dead ends: 3035 [2022-07-22 12:34:06,603 INFO L226 Difference]: Without dead ends: 1873 [2022-07-22 12:34:06,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:06,610 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 865 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:06,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 12:34:06,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-07-22 12:34:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2022-07-22 12:34:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2022-07-22 12:34:06,704 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 40 [2022-07-22 12:34:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:06,746 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2022-07-22 12:34:06,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2022-07-22 12:34:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 12:34:06,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:06,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:06,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:34:06,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash -329948995, now seen corresponding path program 1 times [2022-07-22 12:34:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:06,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662902891] [2022-07-22 12:34:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:34:06,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:06,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662902891] [2022-07-22 12:34:06,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662902891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:06,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:06,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:06,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173231503] [2022-07-22 12:34:06,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:06,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:06,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:06,890 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:09,704 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2022-07-22 12:34:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:09,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-07-22 12:34:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:09,716 INFO L225 Difference]: With dead ends: 5317 [2022-07-22 12:34:09,717 INFO L226 Difference]: Without dead ends: 3460 [2022-07-22 12:34:09,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:09,725 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:09,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:34:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-07-22 12:34:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2022-07-22 12:34:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2022-07-22 12:34:09,778 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 112 [2022-07-22 12:34:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:09,780 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2022-07-22 12:34:09,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2022-07-22 12:34:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 12:34:09,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:09,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:09,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:34:09,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:09,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:09,791 INFO L85 PathProgramCache]: Analyzing trace with hash -933684044, now seen corresponding path program 1 times [2022-07-22 12:34:09,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:09,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007574710] [2022-07-22 12:34:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:34:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:09,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007574710] [2022-07-22 12:34:09,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007574710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:09,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:09,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583121925] [2022-07-22 12:34:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:34:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:34:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:34:09,953 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:14,044 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2022-07-22 12:34:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:34:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-07-22 12:34:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:14,065 INFO L225 Difference]: With dead ends: 10870 [2022-07-22 12:34:14,065 INFO L226 Difference]: Without dead ends: 7413 [2022-07-22 12:34:14,068 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 [2022-07-22 12:34:14,069 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 2581 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:14,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 12:34:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-07-22 12:34:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2022-07-22 12:34:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2701389825934422) internal successors, (9413), 7411 states have internal predecessors, (9413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9413 transitions. [2022-07-22 12:34:14,160 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9413 transitions. Word has length 126 [2022-07-22 12:34:14,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:14,161 INFO L495 AbstractCegarLoop]: Abstraction has 7412 states and 9413 transitions. [2022-07-22 12:34:14,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:14,161 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9413 transitions. [2022-07-22 12:34:14,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 12:34:14,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:14,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:14,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:34:14,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash -435026765, now seen corresponding path program 1 times [2022-07-22 12:34:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:14,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411487092] [2022-07-22 12:34:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:14,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:34:14,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:14,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411487092] [2022-07-22 12:34:14,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411487092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:14,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:14,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:14,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620764506] [2022-07-22 12:34:14,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:14,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:14,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:14,256 INFO L87 Difference]: Start difference. First operand 7412 states and 9413 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:16,873 INFO L93 Difference]: Finished difference Result 17195 states and 22713 transitions. [2022-07-22 12:34:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:16,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-22 12:34:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:16,911 INFO L225 Difference]: With dead ends: 17195 [2022-07-22 12:34:16,911 INFO L226 Difference]: Without dead ends: 10572 [2022-07-22 12:34:16,921 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 [2022-07-22 12:34:16,928 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 928 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:16,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 904 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:34:16,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10572 states. [2022-07-22 12:34:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10572 to 10564. [2022-07-22 12:34:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10564 states, 10563 states have (on average 1.253905140585061) internal successors, (13245), 10563 states have internal predecessors, (13245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 13245 transitions. [2022-07-22 12:34:17,059 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 13245 transitions. Word has length 136 [2022-07-22 12:34:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:17,060 INFO L495 AbstractCegarLoop]: Abstraction has 10564 states and 13245 transitions. [2022-07-22 12:34:17,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 13245 transitions. [2022-07-22 12:34:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-22 12:34:17,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:17,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:17,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:34:17,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1382232573, now seen corresponding path program 1 times [2022-07-22 12:34:17,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:17,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142261633] [2022-07-22 12:34:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:17,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-22 12:34:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:17,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142261633] [2022-07-22 12:34:17,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142261633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:17,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:17,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594451847] [2022-07-22 12:34:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:17,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:17,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:17,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:17,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:17,174 INFO L87 Difference]: Start difference. First operand 10564 states and 13245 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:20,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:20,057 INFO L93 Difference]: Finished difference Result 23508 states and 30389 transitions. [2022-07-22 12:34:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 225 [2022-07-22 12:34:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:20,087 INFO L225 Difference]: With dead ends: 23508 [2022-07-22 12:34:20,088 INFO L226 Difference]: Without dead ends: 13733 [2022-07-22 12:34:20,098 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 [2022-07-22 12:34:20,099 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 984 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:20,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 862 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:34:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2022-07-22 12:34:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 13723. [2022-07-22 12:34:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13723 states, 13722 states have (on average 1.2664334645095467) internal successors, (17378), 13722 states have internal predecessors, (17378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13723 states to 13723 states and 17378 transitions. [2022-07-22 12:34:20,250 INFO L78 Accepts]: Start accepts. Automaton has 13723 states and 17378 transitions. Word has length 225 [2022-07-22 12:34:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:20,251 INFO L495 AbstractCegarLoop]: Abstraction has 13723 states and 17378 transitions. [2022-07-22 12:34:20,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 13723 states and 17378 transitions. [2022-07-22 12:34:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-22 12:34:20,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:20,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:20,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:34:20,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1674288238, now seen corresponding path program 1 times [2022-07-22 12:34:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:20,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220363002] [2022-07-22 12:34:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:20,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 12:34:20,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:20,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220363002] [2022-07-22 12:34:20,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220363002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:20,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:20,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:20,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24194206] [2022-07-22 12:34:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:20,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:20,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:20,376 INFO L87 Difference]: Start difference. First operand 13723 states and 17378 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:23,112 INFO L93 Difference]: Finished difference Result 29809 states and 38633 transitions. [2022-07-22 12:34:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:23,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 256 [2022-07-22 12:34:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:23,142 INFO L225 Difference]: With dead ends: 29809 [2022-07-22 12:34:23,142 INFO L226 Difference]: Without dead ends: 16875 [2022-07-22 12:34:23,155 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 [2022-07-22 12:34:23,156 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 847 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:23,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1869 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:34:23,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16875 states. [2022-07-22 12:34:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16875 to 16871. [2022-07-22 12:34:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16871 states, 16870 states have (on average 1.2406046235921755) internal successors, (20929), 16870 states have internal predecessors, (20929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 20929 transitions. [2022-07-22 12:34:23,431 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 20929 transitions. Word has length 256 [2022-07-22 12:34:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:23,432 INFO L495 AbstractCegarLoop]: Abstraction has 16871 states and 20929 transitions. [2022-07-22 12:34:23,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 20929 transitions. [2022-07-22 12:34:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-07-22 12:34:23,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:23,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:23,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:34:23,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2075264397, now seen corresponding path program 1 times [2022-07-22 12:34:23,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:23,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102931082] [2022-07-22 12:34:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:23,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 12:34:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:23,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102931082] [2022-07-22 12:34:23,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102931082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:23,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:23,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187560672] [2022-07-22 12:34:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:23,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:23,573 INFO L87 Difference]: Start difference. First operand 16871 states and 20929 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:26,162 INFO L93 Difference]: Finished difference Result 32939 states and 41051 transitions. [2022-07-22 12:34:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:26,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 334 [2022-07-22 12:34:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:26,197 INFO L225 Difference]: With dead ends: 32939 [2022-07-22 12:34:26,198 INFO L226 Difference]: Without dead ends: 16857 [2022-07-22 12:34:26,212 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 [2022-07-22 12:34:26,213 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1029 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:26,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1655 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:34:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2022-07-22 12:34:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16856. [2022-07-22 12:34:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16856 states, 16855 states have (on average 1.1646395728270542) internal successors, (19630), 16855 states have internal predecessors, (19630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16856 states to 16856 states and 19630 transitions. [2022-07-22 12:34:26,392 INFO L78 Accepts]: Start accepts. Automaton has 16856 states and 19630 transitions. Word has length 334 [2022-07-22 12:34:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:26,393 INFO L495 AbstractCegarLoop]: Abstraction has 16856 states and 19630 transitions. [2022-07-22 12:34:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 16856 states and 19630 transitions. [2022-07-22 12:34:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-07-22 12:34:26,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:26,405 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:26,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:34:26,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:26,406 INFO L85 PathProgramCache]: Analyzing trace with hash 540762963, now seen corresponding path program 1 times [2022-07-22 12:34:26,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:26,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494304807] [2022-07-22 12:34:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-22 12:34:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:26,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494304807] [2022-07-22 12:34:26,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494304807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:26,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:26,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763595876] [2022-07-22 12:34:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:26,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:26,533 INFO L87 Difference]: Start difference. First operand 16856 states and 19630 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:29,410 INFO L93 Difference]: Finished difference Result 48682 states and 56919 transitions. [2022-07-22 12:34:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:29,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 338 [2022-07-22 12:34:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:29,467 INFO L225 Difference]: With dead ends: 48682 [2022-07-22 12:34:29,467 INFO L226 Difference]: Without dead ends: 32615 [2022-07-22 12:34:29,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:29,487 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 769 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:29,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 973 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:34:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32615 states. [2022-07-22 12:34:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32615 to 29455. [2022-07-22 12:34:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29455 states, 29454 states have (on average 1.1309160046173694) internal successors, (33310), 29454 states have internal predecessors, (33310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29455 states to 29455 states and 33310 transitions. [2022-07-22 12:34:29,825 INFO L78 Accepts]: Start accepts. Automaton has 29455 states and 33310 transitions. Word has length 338 [2022-07-22 12:34:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:29,825 INFO L495 AbstractCegarLoop]: Abstraction has 29455 states and 33310 transitions. [2022-07-22 12:34:29,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 29455 states and 33310 transitions. [2022-07-22 12:34:29,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-07-22 12:34:29,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:29,831 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:29,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:34:29,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:29,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash -433487939, now seen corresponding path program 1 times [2022-07-22 12:34:29,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:29,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561641677] [2022-07-22 12:34:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:29,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:34:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:29,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561641677] [2022-07-22 12:34:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561641677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:29,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:29,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998638943] [2022-07-22 12:34:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:29,948 INFO L87 Difference]: Start difference. First operand 29455 states and 33310 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:32,475 INFO L93 Difference]: Finished difference Result 58119 states and 65825 transitions. [2022-07-22 12:34:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:32,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 356 [2022-07-22 12:34:32,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:32,506 INFO L225 Difference]: With dead ends: 58119 [2022-07-22 12:34:32,506 INFO L226 Difference]: Without dead ends: 29453 [2022-07-22 12:34:32,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:32,526 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1160 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:32,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1420 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:34:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29453 states. [2022-07-22 12:34:32,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29453 to 29452. [2022-07-22 12:34:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29452 states, 29451 states have (on average 1.1039353502427762) internal successors, (32512), 29451 states have internal predecessors, (32512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29452 states to 29452 states and 32512 transitions. [2022-07-22 12:34:32,799 INFO L78 Accepts]: Start accepts. Automaton has 29452 states and 32512 transitions. Word has length 356 [2022-07-22 12:34:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:32,799 INFO L495 AbstractCegarLoop]: Abstraction has 29452 states and 32512 transitions. [2022-07-22 12:34:32,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 29452 states and 32512 transitions. [2022-07-22 12:34:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-07-22 12:34:32,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:32,810 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:32,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 12:34:32,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash -214256868, now seen corresponding path program 1 times [2022-07-22 12:34:32,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:32,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218658318] [2022-07-22 12:34:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 12:34:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:32,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218658318] [2022-07-22 12:34:32,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218658318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:32,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:32,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:32,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248424707] [2022-07-22 12:34:32,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:32,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:32,930 INFO L87 Difference]: Start difference. First operand 29452 states and 32512 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:35,803 INFO L93 Difference]: Finished difference Result 66789 states and 73600 transitions. [2022-07-22 12:34:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:35,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 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 451 [2022-07-22 12:34:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:35,840 INFO L225 Difference]: With dead ends: 66789 [2022-07-22 12:34:35,840 INFO L226 Difference]: Without dead ends: 38126 [2022-07-22 12:34:35,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:35,860 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 719 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:35,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1187 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:34:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38126 states. [2022-07-22 12:34:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38126 to 38116. [2022-07-22 12:34:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38116 states, 38115 states have (on average 1.0886265249901614) internal successors, (41493), 38115 states have internal predecessors, (41493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38116 states to 38116 states and 41493 transitions. [2022-07-22 12:34:36,160 INFO L78 Accepts]: Start accepts. Automaton has 38116 states and 41493 transitions. Word has length 451 [2022-07-22 12:34:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:36,161 INFO L495 AbstractCegarLoop]: Abstraction has 38116 states and 41493 transitions. [2022-07-22 12:34:36,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 38116 states and 41493 transitions. [2022-07-22 12:34:36,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-07-22 12:34:36,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:36,174 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:36,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:34:36,174 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:36,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash 910964850, now seen corresponding path program 1 times [2022-07-22 12:34:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:36,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817294737] [2022-07-22 12:34:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 313 proven. 113 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 12:34:36,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:36,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817294737] [2022-07-22 12:34:36,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817294737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:34:36,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121903466] [2022-07-22 12:34:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:36,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:34:36,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:34:36,420 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) [2022-07-22 12:34:36,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:34:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:36,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:34:36,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:34:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 12:34:36,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:34:36,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121903466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:36,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:34:36,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-22 12:34:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615213015] [2022-07-22 12:34:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:36,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:36,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:36,779 INFO L87 Difference]: Start difference. First operand 38116 states and 41493 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:39,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:39,361 INFO L93 Difference]: Finished difference Result 74644 states and 82181 transitions. [2022-07-22 12:34:39,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:39,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 480 [2022-07-22 12:34:39,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:39,406 INFO L225 Difference]: With dead ends: 74644 [2022-07-22 12:34:39,406 INFO L226 Difference]: Without dead ends: 45981 [2022-07-22 12:34:39,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:39,429 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1123 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:39,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 407 Invalid, 3119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:34:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45981 states. [2022-07-22 12:34:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45981 to 45981. [2022-07-22 12:34:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45981 states, 45980 states have (on average 1.0871683340582863) internal successors, (49988), 45980 states have internal predecessors, (49988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45981 states to 45981 states and 49988 transitions. [2022-07-22 12:34:39,902 INFO L78 Accepts]: Start accepts. Automaton has 45981 states and 49988 transitions. Word has length 480 [2022-07-22 12:34:39,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:39,902 INFO L495 AbstractCegarLoop]: Abstraction has 45981 states and 49988 transitions. [2022-07-22 12:34:39,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 45981 states and 49988 transitions. [2022-07-22 12:34:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-22 12:34:39,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:39,913 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:39,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 12:34:40,127 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,SelfDestructingSolverStorable10 [2022-07-22 12:34:40,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:40,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1889758981, now seen corresponding path program 1 times [2022-07-22 12:34:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:40,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805729553] [2022-07-22 12:34:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:34:40,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:40,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805729553] [2022-07-22 12:34:40,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805729553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:40,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:40,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 12:34:40,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322121357] [2022-07-22 12:34:40,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:40,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:34:40,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:40,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:34:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:34:40,287 INFO L87 Difference]: Start difference. First operand 45981 states and 49988 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:45,812 INFO L93 Difference]: Finished difference Result 155870 states and 169533 transitions. [2022-07-22 12:34:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:34:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 486 [2022-07-22 12:34:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:45,947 INFO L225 Difference]: With dead ends: 155870 [2022-07-22 12:34:45,947 INFO L226 Difference]: Without dead ends: 110678 [2022-07-22 12:34:45,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:34:45,995 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1880 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 1191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 7174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1191 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:45,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 623 Invalid, 7174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1191 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-22 12:34:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110678 states. [2022-07-22 12:34:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110678 to 105038. [2022-07-22 12:34:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105038 states, 105037 states have (on average 1.0820663194874187) internal successors, (113657), 105037 states have internal predecessors, (113657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105038 states to 105038 states and 113657 transitions. [2022-07-22 12:34:47,395 INFO L78 Accepts]: Start accepts. Automaton has 105038 states and 113657 transitions. Word has length 486 [2022-07-22 12:34:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:47,396 INFO L495 AbstractCegarLoop]: Abstraction has 105038 states and 113657 transitions. [2022-07-22 12:34:47,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 105038 states and 113657 transitions. [2022-07-22 12:34:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-07-22 12:34:47,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:47,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:47,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:34:47,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash -786325056, now seen corresponding path program 1 times [2022-07-22 12:34:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:47,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748824431] [2022-07-22 12:34:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:47,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 313 proven. 113 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 12:34:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:47,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748824431] [2022-07-22 12:34:47,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748824431] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:34:47,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021975359] [2022-07-22 12:34:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:47,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:34:47,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:34:47,664 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) [2022-07-22 12:34:47,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:34:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:48,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:34:48,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:34:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 12:34:48,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:34:48,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021975359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:48,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:34:48,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-22 12:34:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660560361] [2022-07-22 12:34:48,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:48,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:48,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:48,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:48,445 INFO L87 Difference]: Start difference. First operand 105038 states and 113657 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:51,282 INFO L93 Difference]: Finished difference Result 210874 states and 228129 transitions. [2022-07-22 12:34:51,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:51,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 620 [2022-07-22 12:34:51,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:51,419 INFO L225 Difference]: With dead ends: 210874 [2022-07-22 12:34:51,419 INFO L226 Difference]: Without dead ends: 106625 [2022-07-22 12:34:51,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:51,464 INFO L413 NwaCegarLoop]: 1223 mSDtfsCounter, 765 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 3045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:51,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1269 Invalid, 3045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:34:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106625 states. [2022-07-22 12:34:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106625 to 104243. [2022-07-22 12:34:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104243 states, 104242 states have (on average 1.0711229638725275) internal successors, (111656), 104242 states have internal predecessors, (111656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104243 states to 104243 states and 111656 transitions. [2022-07-22 12:34:52,767 INFO L78 Accepts]: Start accepts. Automaton has 104243 states and 111656 transitions. Word has length 620 [2022-07-22 12:34:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:52,768 INFO L495 AbstractCegarLoop]: Abstraction has 104243 states and 111656 transitions. [2022-07-22 12:34:52,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 104243 states and 111656 transitions. [2022-07-22 12:34:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-07-22 12:34:52,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:52,931 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:52,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:34:53,139 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,SelfDestructingSolverStorable12 [2022-07-22 12:34:53,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1409107198, now seen corresponding path program 1 times [2022-07-22 12:34:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:53,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889727602] [2022-07-22 12:34:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 12:34:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:53,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889727602] [2022-07-22 12:34:53,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889727602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:34:53,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178857086] [2022-07-22 12:34:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:53,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:34:53,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:34:53,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:34:53,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 12:34:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:53,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 12:34:53,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:34:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-22 12:34:53,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:34:53,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178857086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:53,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:34:53,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-22 12:34:53,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100395639] [2022-07-22 12:34:53,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:53,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:53,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:34:53,560 INFO L87 Difference]: Start difference. First operand 104243 states and 111656 transitions. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:57,220 INFO L93 Difference]: Finished difference Result 235231 states and 252598 transitions. [2022-07-22 12:34:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:57,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 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 620 [2022-07-22 12:34:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:57,478 INFO L225 Difference]: With dead ends: 235231 [2022-07-22 12:34:57,478 INFO L226 Difference]: Without dead ends: 146737 [2022-07-22 12:34:57,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:34:57,523 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 910 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:57,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1746 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:34:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146737 states. [2022-07-22 12:34:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146737 to 131782. [2022-07-22 12:34:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131782 states, 131781 states have (on average 1.0614352600147214) internal successors, (139877), 131781 states have internal predecessors, (139877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131782 states to 131782 states and 139877 transitions. [2022-07-22 12:34:59,071 INFO L78 Accepts]: Start accepts. Automaton has 131782 states and 139877 transitions. Word has length 620 [2022-07-22 12:34:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:59,071 INFO L495 AbstractCegarLoop]: Abstraction has 131782 states and 139877 transitions. [2022-07-22 12:34:59,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 131782 states and 139877 transitions. [2022-07-22 12:34:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2022-07-22 12:34:59,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:59,098 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:59,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 12:34:59,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:34:59,300 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:59,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:59,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1437567192, now seen corresponding path program 1 times [2022-07-22 12:34:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:59,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661881230] [2022-07-22 12:34:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:59,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-22 12:34:59,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:59,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661881230] [2022-07-22 12:34:59,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661881230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:59,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:59,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131300839] [2022-07-22 12:34:59,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:59,696 INFO L87 Difference]: Start difference. First operand 131782 states and 139877 transitions. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:02,735 INFO L93 Difference]: Finished difference Result 263572 states and 279754 transitions. [2022-07-22 12:35:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:35:02,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 689 [2022-07-22 12:35:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:02,891 INFO L225 Difference]: With dead ends: 263572 [2022-07-22 12:35:02,892 INFO L226 Difference]: Without dead ends: 133366 [2022-07-22 12:35:02,937 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 [2022-07-22 12:35:02,938 INFO L413 NwaCegarLoop]: 1400 mSDtfsCounter, 638 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:02,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1479 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:35:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133366 states. [2022-07-22 12:35:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133366 to 130993. [2022-07-22 12:35:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130993 states, 130992 states have (on average 1.0507588249664102) internal successors, (137641), 130992 states have internal predecessors, (137641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130993 states to 130993 states and 137641 transitions. [2022-07-22 12:35:04,436 INFO L78 Accepts]: Start accepts. Automaton has 130993 states and 137641 transitions. Word has length 689 [2022-07-22 12:35:04,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:04,436 INFO L495 AbstractCegarLoop]: Abstraction has 130993 states and 137641 transitions. [2022-07-22 12:35:04,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 130993 states and 137641 transitions. [2022-07-22 12:35:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2022-07-22 12:35:04,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:04,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:04,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 12:35:04,464 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash 708611548, now seen corresponding path program 1 times [2022-07-22 12:35:04,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:04,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521228446] [2022-07-22 12:35:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:04,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:35:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:35:04,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521228446] [2022-07-22 12:35:04,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521228446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:35:04,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:35:04,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:35:04,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676590676] [2022-07-22 12:35:04,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:35:04,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:35:04,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:35:04,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:35:04,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:35:04,926 INFO L87 Difference]: Start difference. First operand 130993 states and 137641 transitions. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:10,035 INFO L93 Difference]: Finished difference Result 311599 states and 329151 transitions. [2022-07-22 12:35:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:35:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 718 [2022-07-22 12:35:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:10,275 INFO L225 Difference]: With dead ends: 311599 [2022-07-22 12:35:10,275 INFO L226 Difference]: Without dead ends: 195568 [2022-07-22 12:35:10,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:35:10,340 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1304 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4984 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 5789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 4984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:10,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 849 Invalid, 5789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 4984 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 12:35:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195568 states. [2022-07-22 12:35:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195568 to 193980. [2022-07-22 12:35:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193980 states, 193979 states have (on average 1.0521602853917176) internal successors, (204097), 193979 states have internal predecessors, (204097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193980 states to 193980 states and 204097 transitions. [2022-07-22 12:35:12,521 INFO L78 Accepts]: Start accepts. Automaton has 193980 states and 204097 transitions. Word has length 718 [2022-07-22 12:35:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:12,521 INFO L495 AbstractCegarLoop]: Abstraction has 193980 states and 204097 transitions. [2022-07-22 12:35:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 193980 states and 204097 transitions. [2022-07-22 12:35:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-07-22 12:35:12,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:12,560 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:12,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 12:35:12,561 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:12,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1308245978, now seen corresponding path program 1 times [2022-07-22 12:35:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:12,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708234607] [2022-07-22 12:35:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:12,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 726 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-07-22 12:35:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:35:12,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708234607] [2022-07-22 12:35:12,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708234607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:35:12,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:35:12,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:35:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310501937] [2022-07-22 12:35:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:35:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:35:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:35:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:35:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:35:12,950 INFO L87 Difference]: Start difference. First operand 193980 states and 204097 transitions. Second operand has 4 states, 4 states have (on average 148.25) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:19,273 INFO L93 Difference]: Finished difference Result 471550 states and 495944 transitions. [2022-07-22 12:35:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:35:19,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 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 811 [2022-07-22 12:35:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:19,606 INFO L225 Difference]: With dead ends: 471550 [2022-07-22 12:35:19,606 INFO L226 Difference]: Without dead ends: 279146 [2022-07-22 12:35:19,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:35:19,657 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1665 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5680 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 6459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 5680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:19,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 764 Invalid, 6459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 5680 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 12:35:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279146 states. [2022-07-22 12:35:22,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279146 to 264862. [2022-07-22 12:35:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264862 states, 264861 states have (on average 1.0516874889092769) internal successors, (278551), 264861 states have internal predecessors, (278551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264862 states to 264862 states and 278551 transitions. [2022-07-22 12:35:23,184 INFO L78 Accepts]: Start accepts. Automaton has 264862 states and 278551 transitions. Word has length 811 [2022-07-22 12:35:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:23,184 INFO L495 AbstractCegarLoop]: Abstraction has 264862 states and 278551 transitions. [2022-07-22 12:35:23,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 264862 states and 278551 transitions. [2022-07-22 12:35:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2022-07-22 12:35:23,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:23,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:23,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 12:35:23,245 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1870168381, now seen corresponding path program 1 times [2022-07-22 12:35:23,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:23,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044472479] [2022-07-22 12:35:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:23,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 647 proven. 113 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-07-22 12:35:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:35:23,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044472479] [2022-07-22 12:35:23,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044472479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:35:23,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477570465] [2022-07-22 12:35:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:23,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:35:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:35:23,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:35:23,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 12:35:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:23,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:35:23,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:35:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2022-07-22 12:35:23,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:35:23,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477570465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:35:23,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:35:23,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-22 12:35:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657606513] [2022-07-22 12:35:23,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:35:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:35:23,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:35:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:35:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:35:23,743 INFO L87 Difference]: Start difference. First operand 264862 states and 278551 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:27,932 INFO L93 Difference]: Finished difference Result 543875 states and 573245 transitions. [2022-07-22 12:35:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:35:27,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 840 [2022-07-22 12:35:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:28,361 INFO L225 Difference]: With dead ends: 543875 [2022-07-22 12:35:28,362 INFO L226 Difference]: Without dead ends: 297122 [2022-07-22 12:35:28,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:35:28,494 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 967 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:28,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 513 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:35:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297122 states. [2022-07-22 12:35:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297122 to 278232. [2022-07-22 12:35:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278232 states, 278231 states have (on average 1.0517555556354252) internal successors, (292631), 278231 states have internal predecessors, (292631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278232 states to 278232 states and 292631 transitions. [2022-07-22 12:35:32,388 INFO L78 Accepts]: Start accepts. Automaton has 278232 states and 292631 transitions. Word has length 840 [2022-07-22 12:35:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:32,389 INFO L495 AbstractCegarLoop]: Abstraction has 278232 states and 292631 transitions. [2022-07-22 12:35:32,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 278232 states and 292631 transitions. [2022-07-22 12:35:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2022-07-22 12:35:32,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:32,501 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:32,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 12:35:32,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 12:35:32,702 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash 545761396, now seen corresponding path program 1 times [2022-07-22 12:35:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:32,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869493732] [2022-07-22 12:35:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:35:33,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:35:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869493732] [2022-07-22 12:35:33,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869493732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:35:33,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:35:33,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:35:33,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969465254] [2022-07-22 12:35:33,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:35:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:35:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:35:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:35:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:35:33,039 INFO L87 Difference]: Start difference. First operand 278232 states and 292631 transitions. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:36,914 INFO L93 Difference]: Finished difference Result 539146 states and 567579 transitions. [2022-07-22 12:35:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:35:36,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 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 1035 [2022-07-22 12:35:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:37,294 INFO L225 Difference]: With dead ends: 539146 [2022-07-22 12:35:37,294 INFO L226 Difference]: Without dead ends: 279023 [2022-07-22 12:35:37,438 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 [2022-07-22 12:35:37,439 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 117 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:37,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1903 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:35:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279023 states.