./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/Problem17_label42.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 96107ddac20ae25720715e53c2e276b0ff7d668effb9cd422fe5eafc03582006 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:33:12,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:33:12,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:33:12,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:33:12,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:33:12,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:33:12,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:33:12,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:33:12,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:33:12,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:33:12,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:33:12,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:33:12,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:33:12,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:33:12,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:33:12,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:33:12,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:33:12,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:33:12,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:33:12,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:33:12,484 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:33:12,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:33:12,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:33:12,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:33:12,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:33:12,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:33:12,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:33:12,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:33:12,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:33:12,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:33:12,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:33:12,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:33:12,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:33:12,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:33:12,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:33:12,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:33:12,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:33:12,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:33:12,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:33:12,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:33:12,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:33:12,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:33:12,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:33:12,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:33:12,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:33:12,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:33:12,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:33:12,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:33:12,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:33:12,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:33:12,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:33:12,540 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:33:12,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:33:12,541 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:33:12,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:33:12,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:33:12,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:33:12,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:33:12,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:33:12,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:33:12,543 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:33:12,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:33:12,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:33:12,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:33:12,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:33:12,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:33:12,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:33:12,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:33:12,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:33:12,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:33:12,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:33:12,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:33:12,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:33:12,546 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:33:12,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:33:12,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:33:12,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96107ddac20ae25720715e53c2e276b0ff7d668effb9cd422fe5eafc03582006 [2022-07-12 01:33:12,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:33:12,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:33:12,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:33:12,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:33:12,843 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:33:12,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label42.c [2022-07-12 01:33:12,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34314afca/1119bc9a348a458ea07d5db0181d8beb/FLAGe9ce34235 [2022-07-12 01:33:13,542 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:33:13,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label42.c [2022-07-12 01:33:13,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34314afca/1119bc9a348a458ea07d5db0181d8beb/FLAGe9ce34235 [2022-07-12 01:33:13,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34314afca/1119bc9a348a458ea07d5db0181d8beb [2022-07-12 01:33:13,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:33:13,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:33:13,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:33:13,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:33:13,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:33:13,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:33:13" (1/1) ... [2022-07-12 01:33:13,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43896ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:13, skipping insertion in model container [2022-07-12 01:33:13,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:33:13" (1/1) ... [2022-07-12 01:33:13,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:33:13,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:33:14,091 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/Problem17_label42.c[6070,6083] [2022-07-12 01:33:14,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:33:14,607 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:33:14,627 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/Problem17_label42.c[6070,6083] [2022-07-12 01:33:14,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:33:14,929 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:33:14,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14 WrapperNode [2022-07-12 01:33:14,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:33:14,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:33:14,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:33:14,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:33:14,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:14,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,290 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-12 01:33:15,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:33:15,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:33:15,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:33:15,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:33:15,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:33:15,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:33:15,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:33:15,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:33:15,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (1/1) ... [2022-07-12 01:33:15,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:33:15,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:15,790 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) [2022-07-12 01:33:15,795 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 [2022-07-12 01:33:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:33:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:33:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:33:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:33:15,880 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:33:15,882 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:33:18,930 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:33:18,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:33:18,940 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:33:18,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:33:18 BoogieIcfgContainer [2022-07-12 01:33:18,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:33:18,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:33:18,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:33:18,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:33:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:33:13" (1/3) ... [2022-07-12 01:33:18,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38362a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:33:18, skipping insertion in model container [2022-07-12 01:33:18,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:14" (2/3) ... [2022-07-12 01:33:18,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38362a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:33:18, skipping insertion in model container [2022-07-12 01:33:18,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:33:18" (3/3) ... [2022-07-12 01:33:18,950 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label42.c [2022-07-12 01:33:18,963 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:33:18,963 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:33:19,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:33:19,019 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@5f2cca83, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60279326 [2022-07-12 01:33:19,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:33:19,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 01:33:19,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:19,034 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] [2022-07-12 01:33:19,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2102454322, now seen corresponding path program 1 times [2022-07-12 01:33:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:19,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848005576] [2022-07-12 01:33:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:19,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:19,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848005576] [2022-07-12 01:33:19,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848005576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:19,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:19,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:19,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862172890] [2022-07-12 01:33:19,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:19,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:19,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:19,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:19,301 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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) [2022-07-12 01:33:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:22,194 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2022-07-12 01:33:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:22,196 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 [2022-07-12 01:33:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:22,217 INFO L225 Difference]: With dead ends: 1667 [2022-07-12 01:33:22,218 INFO L226 Difference]: Without dead ends: 998 [2022-07-12 01:33:22,224 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 [2022-07-12 01:33:22,227 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 505 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:22,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 01:33:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-07-12 01:33:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2022-07-12 01:33:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2022-07-12 01:33:22,305 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 40 [2022-07-12 01:33:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:22,306 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2022-07-12 01:33:22,306 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) [2022-07-12 01:33:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2022-07-12 01:33:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 01:33:22,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:22,310 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] [2022-07-12 01:33:22,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:33:22,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:22,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:22,311 INFO L85 PathProgramCache]: Analyzing trace with hash 48341583, now seen corresponding path program 1 times [2022-07-12 01:33:22,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:22,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632427104] [2022-07-12 01:33:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:22,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:22,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632427104] [2022-07-12 01:33:22,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632427104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:22,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:22,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:22,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375226954] [2022-07-12 01:33:22,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:22,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:22,485 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:24,743 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2022-07-12 01:33:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:24,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-07-12 01:33:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:24,753 INFO L225 Difference]: With dead ends: 2841 [2022-07-12 01:33:24,754 INFO L226 Difference]: Without dead ends: 1861 [2022-07-12 01:33:24,761 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 [2022-07-12 01:33:24,763 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:24,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:33:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2022-07-12 01:33:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2022-07-12 01:33:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2022-07-12 01:33:24,817 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 105 [2022-07-12 01:33:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:24,818 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2022-07-12 01:33:24,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2022-07-12 01:33:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 01:33:24,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:24,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:33:24,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1523238332, now seen corresponding path program 1 times [2022-07-12 01:33:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:24,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13804944] [2022-07-12 01:33:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:24,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:25,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:25,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13804944] [2022-07-12 01:33:25,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13804944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:25,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:25,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362371081] [2022-07-12 01:33:25,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:25,017 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:27,778 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2022-07-12 01:33:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:27,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-07-12 01:33:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:27,813 INFO L225 Difference]: With dead ends: 4591 [2022-07-12 01:33:27,813 INFO L226 Difference]: Without dead ends: 2736 [2022-07-12 01:33:27,819 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 [2022-07-12 01:33:27,824 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:27,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 01:33:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-07-12 01:33:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2022-07-12 01:33:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2022-07-12 01:33:27,880 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 145 [2022-07-12 01:33:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:27,881 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2022-07-12 01:33:27,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2022-07-12 01:33:27,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 01:33:27,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:27,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:33:27,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash 652145173, now seen corresponding path program 1 times [2022-07-12 01:33:27,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:27,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826831485] [2022-07-12 01:33:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:27,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:28,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826831485] [2022-07-12 01:33:28,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826831485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:28,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:28,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:28,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90639262] [2022-07-12 01:33:28,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:28,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:28,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:28,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:28,055 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:29,851 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2022-07-12 01:33:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2022-07-12 01:33:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:29,866 INFO L225 Difference]: With dead ends: 6709 [2022-07-12 01:33:29,867 INFO L226 Difference]: Without dead ends: 3995 [2022-07-12 01:33:29,870 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 [2022-07-12 01:33:29,871 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:29,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:33:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-07-12 01:33:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2022-07-12 01:33:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2022-07-12 01:33:29,934 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 151 [2022-07-12 01:33:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:29,935 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2022-07-12 01:33:29,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2022-07-12 01:33:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 01:33:29,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:29,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:29,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:33:29,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1757277791, now seen corresponding path program 1 times [2022-07-12 01:33:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:29,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883085365] [2022-07-12 01:33:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:29,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:30,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883085365] [2022-07-12 01:33:30,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883085365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:30,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:30,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 01:33:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597654010] [2022-07-12 01:33:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:30,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 01:33:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 01:33:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:33:30,100 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:32,725 INFO L93 Difference]: Finished difference Result 8019 states and 10522 transitions. [2022-07-12 01:33:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:33:32,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2022-07-12 01:33:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:32,747 INFO L225 Difference]: With dead ends: 8019 [2022-07-12 01:33:32,748 INFO L226 Difference]: Without dead ends: 4879 [2022-07-12 01:33:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:33:32,754 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1096 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:32,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 881 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:33:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2022-07-12 01:33:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4852. [2022-07-12 01:33:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2022-07-12 01:33:32,882 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 188 [2022-07-12 01:33:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:32,883 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2022-07-12 01:33:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2022-07-12 01:33:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 01:33:32,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:32,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:32,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:33:32,890 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash -260014896, now seen corresponding path program 1 times [2022-07-12 01:33:32,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:32,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731413567] [2022-07-12 01:33:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:32,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 01:33:33,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:33,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731413567] [2022-07-12 01:33:33,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731413567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:33,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:33,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538580221] [2022-07-12 01:33:33,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:33,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:33,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:33,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:33,017 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:35,126 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2022-07-12 01:33:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 194 [2022-07-12 01:33:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:35,152 INFO L225 Difference]: With dead ends: 12249 [2022-07-12 01:33:35,153 INFO L226 Difference]: Without dead ends: 7399 [2022-07-12 01:33:35,163 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 [2022-07-12 01:33:35,166 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 408 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:35,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:33:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2022-07-12 01:33:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2022-07-12 01:33:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2022-07-12 01:33:35,271 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 194 [2022-07-12 01:33:35,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:35,272 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2022-07-12 01:33:35,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2022-07-12 01:33:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-12 01:33:35,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:35,275 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:35,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 01:33:35,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -546786268, now seen corresponding path program 1 times [2022-07-12 01:33:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:35,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537469561] [2022-07-12 01:33:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:35,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537469561] [2022-07-12 01:33:35,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537469561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:35,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:35,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:35,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320935935] [2022-07-12 01:33:35,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:35,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:35,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:35,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:35,452 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:37,446 INFO L93 Difference]: Finished difference Result 13930 states and 17666 transitions. [2022-07-12 01:33:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:37,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2022-07-12 01:33:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:37,476 INFO L225 Difference]: With dead ends: 13930 [2022-07-12 01:33:37,476 INFO L226 Difference]: Without dead ends: 7828 [2022-07-12 01:33:37,483 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 [2022-07-12 01:33:37,484 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 418 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:37,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 953 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 01:33:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2022-07-12 01:33:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7822. [2022-07-12 01:33:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7822 states, 7821 states have (on average 1.1792609640710907) internal successors, (9223), 7821 states have internal predecessors, (9223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 9223 transitions. [2022-07-12 01:33:37,616 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 9223 transitions. Word has length 207 [2022-07-12 01:33:37,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:37,617 INFO L495 AbstractCegarLoop]: Abstraction has 7822 states and 9223 transitions. [2022-07-12 01:33:37,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 9223 transitions. [2022-07-12 01:33:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-12 01:33:37,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:37,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:37,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:33:37,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash -304170090, now seen corresponding path program 1 times [2022-07-12 01:33:37,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:37,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931888180] [2022-07-12 01:33:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:37,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:37,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931888180] [2022-07-12 01:33:37,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931888180] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972396681] [2022-07-12 01:33:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:37,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:37,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:37,781 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) [2022-07-12 01:33:37,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:33:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:37,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 01:33:37,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:33:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:38,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:33:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:38,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972396681] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:38,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 01:33:38,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-12 01:33:38,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922900636] [2022-07-12 01:33:38,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:38,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:33:38,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:33:38,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:33:38,916 INFO L87 Difference]: Start difference. First operand 7822 states and 9223 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:42,369 INFO L93 Difference]: Finished difference Result 26748 states and 31821 transitions. [2022-07-12 01:33:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:33:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2022-07-12 01:33:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:42,411 INFO L225 Difference]: With dead ends: 26748 [2022-07-12 01:33:42,411 INFO L226 Difference]: Without dead ends: 18497 [2022-07-12 01:33:42,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 515 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:33:42,424 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1008 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:42,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 147 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 01:33:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18497 states. [2022-07-12 01:33:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18497 to 18495. [2022-07-12 01:33:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18495 states, 18494 states have (on average 1.161187412133665) internal successors, (21475), 18494 states have internal predecessors, (21475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18495 states to 18495 states and 21475 transitions. [2022-07-12 01:33:42,784 INFO L78 Accepts]: Start accepts. Automaton has 18495 states and 21475 transitions. Word has length 260 [2022-07-12 01:33:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:42,784 INFO L495 AbstractCegarLoop]: Abstraction has 18495 states and 21475 transitions. [2022-07-12 01:33:42,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:42,785 INFO L276 IsEmpty]: Start isEmpty. Operand 18495 states and 21475 transitions. [2022-07-12 01:33:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-12 01:33:42,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:42,789 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:42,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 01:33:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:43,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash 701515888, now seen corresponding path program 1 times [2022-07-12 01:33:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:43,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376338048] [2022-07-12 01:33:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 01:33:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376338048] [2022-07-12 01:33:43,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376338048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:43,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:43,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:43,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100086243] [2022-07-12 01:33:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:43,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:43,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:43,128 INFO L87 Difference]: Start difference. First operand 18495 states and 21475 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:44,753 INFO L93 Difference]: Finished difference Result 40390 states and 46980 transitions. [2022-07-12 01:33:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 277 [2022-07-12 01:33:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:44,799 INFO L225 Difference]: With dead ends: 40390 [2022-07-12 01:33:44,799 INFO L226 Difference]: Without dead ends: 21471 [2022-07-12 01:33:44,912 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 [2022-07-12 01:33:44,913 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:44,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 844 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21471 states. [2022-07-12 01:33:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21471 to 21471. [2022-07-12 01:33:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21471 states, 21470 states have (on average 1.1432231020027945) internal successors, (24545), 21470 states have internal predecessors, (24545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21471 states to 21471 states and 24545 transitions. [2022-07-12 01:33:45,159 INFO L78 Accepts]: Start accepts. Automaton has 21471 states and 24545 transitions. Word has length 277 [2022-07-12 01:33:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:45,159 INFO L495 AbstractCegarLoop]: Abstraction has 21471 states and 24545 transitions. [2022-07-12 01:33:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 21471 states and 24545 transitions. [2022-07-12 01:33:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-12 01:33:45,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:45,165 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, 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] [2022-07-12 01:33:45,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:33:45,166 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:45,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1295125674, now seen corresponding path program 1 times [2022-07-12 01:33:45,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:45,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318843044] [2022-07-12 01:33:45,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 01:33:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:45,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318843044] [2022-07-12 01:33:45,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318843044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:45,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:45,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513842172] [2022-07-12 01:33:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:45,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:45,304 INFO L87 Difference]: Start difference. First operand 21471 states and 24545 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:47,203 INFO L93 Difference]: Finished difference Result 52349 states and 59968 transitions. [2022-07-12 01:33:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:47,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 312 [2022-07-12 01:33:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:47,263 INFO L225 Difference]: With dead ends: 52349 [2022-07-12 01:33:47,264 INFO L226 Difference]: Without dead ends: 30452 [2022-07-12 01:33:47,282 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 [2022-07-12 01:33:47,283 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 460 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:47,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 327 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:33:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30452 states. [2022-07-12 01:33:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30452 to 21468. [2022-07-12 01:33:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21468 states, 21467 states have (on average 1.1420785391531187) internal successors, (24517), 21467 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21468 states to 21468 states and 24517 transitions. [2022-07-12 01:33:47,580 INFO L78 Accepts]: Start accepts. Automaton has 21468 states and 24517 transitions. Word has length 312 [2022-07-12 01:33:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:47,580 INFO L495 AbstractCegarLoop]: Abstraction has 21468 states and 24517 transitions. [2022-07-12 01:33:47,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21468 states and 24517 transitions. [2022-07-12 01:33:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-07-12 01:33:47,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:47,588 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:47,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:33:47,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1545961588, now seen corresponding path program 1 times [2022-07-12 01:33:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:47,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836550202] [2022-07-12 01:33:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:47,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 01:33:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:47,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836550202] [2022-07-12 01:33:47,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836550202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:47,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:47,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892568614] [2022-07-12 01:33:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:47,748 INFO L87 Difference]: Start difference. First operand 21468 states and 24517 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:49,729 INFO L93 Difference]: Finished difference Result 51042 states and 58361 transitions. [2022-07-12 01:33:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:49,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 [2022-07-12 01:33:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:49,772 INFO L225 Difference]: With dead ends: 51042 [2022-07-12 01:33:49,772 INFO L226 Difference]: Without dead ends: 29576 [2022-07-12 01:33:49,791 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 [2022-07-12 01:33:49,792 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 326 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:49,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 843 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:33:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29576 states. [2022-07-12 01:33:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29576 to 27853. [2022-07-12 01:33:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27853 states, 27852 states have (on average 1.128823782852219) internal successors, (31440), 27852 states have internal predecessors, (31440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27853 states to 27853 states and 31440 transitions. [2022-07-12 01:33:50,136 INFO L78 Accepts]: Start accepts. Automaton has 27853 states and 31440 transitions. Word has length 334 [2022-07-12 01:33:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:50,137 INFO L495 AbstractCegarLoop]: Abstraction has 27853 states and 31440 transitions. [2022-07-12 01:33:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 27853 states and 31440 transitions. [2022-07-12 01:33:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-07-12 01:33:50,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:50,144 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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:50,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:33:50,144 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:50,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1618781094, now seen corresponding path program 1 times [2022-07-12 01:33:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:50,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171583063] [2022-07-12 01:33:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 355 proven. 73 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-12 01:33:50,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:50,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171583063] [2022-07-12 01:33:50,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171583063] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:50,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446107783] [2022-07-12 01:33:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:50,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:50,288 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) [2022-07-12 01:33:50,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:33:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:50,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 01:33:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:33:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 355 proven. 73 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-12 01:33:50,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:33:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-12 01:33:51,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446107783] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:51,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 01:33:51,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-12 01:33:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140950985] [2022-07-12 01:33:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:51,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:33:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:33:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:33:51,092 INFO L87 Difference]: Start difference. First operand 27853 states and 31440 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:54,356 INFO L93 Difference]: Finished difference Result 68931 states and 77945 transitions. [2022-07-12 01:33:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:33:54,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2022-07-12 01:33:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:54,406 INFO L225 Difference]: With dead ends: 68931 [2022-07-12 01:33:54,406 INFO L226 Difference]: Without dead ends: 40653 [2022-07-12 01:33:54,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 671 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:33:54,432 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 901 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:54,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 189 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 01:33:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40653 states. [2022-07-12 01:33:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40653 to 38524. [2022-07-12 01:33:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38524 states, 38523 states have (on average 1.1351400462061625) internal successors, (43729), 38523 states have internal predecessors, (43729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38524 states to 38524 states and 43729 transitions. [2022-07-12 01:33:55,018 INFO L78 Accepts]: Start accepts. Automaton has 38524 states and 43729 transitions. Word has length 338 [2022-07-12 01:33:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:55,019 INFO L495 AbstractCegarLoop]: Abstraction has 38524 states and 43729 transitions. [2022-07-12 01:33:55,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 38524 states and 43729 transitions. [2022-07-12 01:33:55,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-12 01:33:55,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:55,027 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:55,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:33:55,253 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,SelfDestructingSolverStorable11 [2022-07-12 01:33:55,253 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash 977737213, now seen corresponding path program 1 times [2022-07-12 01:33:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:55,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285005350] [2022-07-12 01:33:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:33:55,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285005350] [2022-07-12 01:33:55,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285005350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:55,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:55,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302563170] [2022-07-12 01:33:55,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:55,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:55,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:55,409 INFO L87 Difference]: Start difference. First operand 38524 states and 43729 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) [2022-07-12 01:33:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:57,211 INFO L93 Difference]: Finished difference Result 82167 states and 93323 transitions. [2022-07-12 01:33:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:57,211 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 352 [2022-07-12 01:33:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:57,259 INFO L225 Difference]: With dead ends: 82167 [2022-07-12 01:33:57,260 INFO L226 Difference]: Without dead ends: 43214 [2022-07-12 01:33:57,282 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 [2022-07-12 01:33:57,283 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 436 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:57,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 835 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43214 states. [2022-07-12 01:33:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43214 to 41082. [2022-07-12 01:33:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41082 states, 41081 states have (on average 1.1328107884423455) internal successors, (46537), 41081 states have internal predecessors, (46537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41082 states to 41082 states and 46537 transitions. [2022-07-12 01:33:57,851 INFO L78 Accepts]: Start accepts. Automaton has 41082 states and 46537 transitions. Word has length 352 [2022-07-12 01:33:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:57,852 INFO L495 AbstractCegarLoop]: Abstraction has 41082 states and 46537 transitions. [2022-07-12 01:33:57,852 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) [2022-07-12 01:33:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 41082 states and 46537 transitions. [2022-07-12 01:33:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-12 01:33:57,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:57,859 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, 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] [2022-07-12 01:33:57,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:33:57,859 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1634611038, now seen corresponding path program 1 times [2022-07-12 01:33:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:57,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668428345] [2022-07-12 01:33:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:33:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:58,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668428345] [2022-07-12 01:33:58,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668428345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:58,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:58,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488395458] [2022-07-12 01:33:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:58,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:58,147 INFO L87 Difference]: Start difference. First operand 41082 states and 46537 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:59,919 INFO L93 Difference]: Finished difference Result 86418 states and 98040 transitions. [2022-07-12 01:33:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:59,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 383 [2022-07-12 01:33:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:59,988 INFO L225 Difference]: With dead ends: 86418 [2022-07-12 01:33:59,989 INFO L226 Difference]: Without dead ends: 44913 [2022-07-12 01:34:00,017 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 [2022-07-12 01:34:00,018 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 401 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:00,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 880 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44913 states. [2022-07-12 01:34:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44913 to 44911. [2022-07-12 01:34:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44911 states, 44910 states have (on average 1.1258517034068136) internal successors, (50562), 44910 states have internal predecessors, (50562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44911 states to 44911 states and 50562 transitions. [2022-07-12 01:34:00,601 INFO L78 Accepts]: Start accepts. Automaton has 44911 states and 50562 transitions. Word has length 383 [2022-07-12 01:34:00,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:00,602 INFO L495 AbstractCegarLoop]: Abstraction has 44911 states and 50562 transitions. [2022-07-12 01:34:00,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 44911 states and 50562 transitions. [2022-07-12 01:34:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-12 01:34:00,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:00,610 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, 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] [2022-07-12 01:34:00,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:34:00,610 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2065719755, now seen corresponding path program 1 times [2022-07-12 01:34:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:00,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971889907] [2022-07-12 01:34:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:34:00,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:00,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971889907] [2022-07-12 01:34:00,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971889907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:00,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:00,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:00,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166022176] [2022-07-12 01:34:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:00,783 INFO L87 Difference]: Start difference. First operand 44911 states and 50562 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:02,873 INFO L93 Difference]: Finished difference Result 100497 states and 112916 transitions. [2022-07-12 01:34:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2022-07-12 01:34:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:02,949 INFO L225 Difference]: With dead ends: 100497 [2022-07-12 01:34:02,949 INFO L226 Difference]: Without dead ends: 55159 [2022-07-12 01:34:02,982 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 [2022-07-12 01:34:02,983 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 488 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:02,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 194 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:34:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55159 states. [2022-07-12 01:34:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55159 to 53853. [2022-07-12 01:34:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53853 states, 53852 states have (on average 1.121741068112605) internal successors, (60408), 53852 states have internal predecessors, (60408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53853 states to 53853 states and 60408 transitions. [2022-07-12 01:34:03,772 INFO L78 Accepts]: Start accepts. Automaton has 53853 states and 60408 transitions. Word has length 422 [2022-07-12 01:34:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:03,772 INFO L495 AbstractCegarLoop]: Abstraction has 53853 states and 60408 transitions. [2022-07-12 01:34:03,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 53853 states and 60408 transitions. [2022-07-12 01:34:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-12 01:34:03,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:03,778 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, 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, 1, 1, 1, 1] [2022-07-12 01:34:03,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 01:34:03,779 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1496360823, now seen corresponding path program 1 times [2022-07-12 01:34:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:03,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362207563] [2022-07-12 01:34:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:03,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 01:34:03,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:03,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362207563] [2022-07-12 01:34:03,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362207563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:03,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:03,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554553886] [2022-07-12 01:34:03,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:03,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:03,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:03,979 INFO L87 Difference]: Start difference. First operand 53853 states and 60408 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:06,338 INFO L93 Difference]: Finished difference Result 125158 states and 140434 transitions. [2022-07-12 01:34:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:06,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 440 [2022-07-12 01:34:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:06,428 INFO L225 Difference]: With dead ends: 125158 [2022-07-12 01:34:06,429 INFO L226 Difference]: Without dead ends: 67464 [2022-07-12 01:34:06,469 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 [2022-07-12 01:34:06,472 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 446 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:06,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 657 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 01:34:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67464 states. [2022-07-12 01:34:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67464 to 62342. [2022-07-12 01:34:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62342 states, 62341 states have (on average 1.1151088368810254) internal successors, (69517), 62341 states have internal predecessors, (69517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62342 states to 62342 states and 69517 transitions. [2022-07-12 01:34:07,470 INFO L78 Accepts]: Start accepts. Automaton has 62342 states and 69517 transitions. Word has length 440 [2022-07-12 01:34:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:07,470 INFO L495 AbstractCegarLoop]: Abstraction has 62342 states and 69517 transitions. [2022-07-12 01:34:07,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 62342 states and 69517 transitions. [2022-07-12 01:34:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-07-12 01:34:07,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:07,479 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:07,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:34:07,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash -788361170, now seen corresponding path program 1 times [2022-07-12 01:34:07,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282961540] [2022-07-12 01:34:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2022-07-12 01:34:07,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:07,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282961540] [2022-07-12 01:34:07,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282961540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:07,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:07,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:07,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563806942] [2022-07-12 01:34:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:07,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:07,840 INFO L87 Difference]: Start difference. First operand 62342 states and 69517 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:09,774 INFO L93 Difference]: Finished difference Result 130194 states and 145275 transitions. [2022-07-12 01:34:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:09,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 444 [2022-07-12 01:34:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:09,854 INFO L225 Difference]: With dead ends: 130194 [2022-07-12 01:34:09,854 INFO L226 Difference]: Without dead ends: 67423 [2022-07-12 01:34:09,890 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 [2022-07-12 01:34:09,890 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 440 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:09,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 711 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67423 states. [2022-07-12 01:34:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67423 to 60615. [2022-07-12 01:34:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60615 states, 60614 states have (on average 1.1074669218332398) internal successors, (67128), 60614 states have internal predecessors, (67128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60615 states to 60615 states and 67128 transitions. [2022-07-12 01:34:10,865 INFO L78 Accepts]: Start accepts. Automaton has 60615 states and 67128 transitions. Word has length 444 [2022-07-12 01:34:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:10,866 INFO L495 AbstractCegarLoop]: Abstraction has 60615 states and 67128 transitions. [2022-07-12 01:34:10,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 60615 states and 67128 transitions. [2022-07-12 01:34:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-07-12 01:34:10,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:10,875 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, 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] [2022-07-12 01:34:10,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 01:34:10,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash 642720953, now seen corresponding path program 1 times [2022-07-12 01:34:10,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:10,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488355428] [2022-07-12 01:34:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:34:11,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488355428] [2022-07-12 01:34:11,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488355428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:11,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:11,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:11,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353139675] [2022-07-12 01:34:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:11,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:11,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:11,228 INFO L87 Difference]: Start difference. First operand 60615 states and 67128 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:13,175 INFO L93 Difference]: Finished difference Result 131454 states and 145577 transitions. [2022-07-12 01:34:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:13,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 475 [2022-07-12 01:34:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:13,255 INFO L225 Difference]: With dead ends: 131454 [2022-07-12 01:34:13,255 INFO L226 Difference]: Without dead ends: 70409 [2022-07-12 01:34:13,278 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 [2022-07-12 01:34:13,279 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 475 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:13,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 120 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70409 states. [2022-07-12 01:34:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70409 to 58886. [2022-07-12 01:34:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58886 states, 58885 states have (on average 1.1044408593020294) internal successors, (65035), 58885 states have internal predecessors, (65035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58886 states to 58886 states and 65035 transitions. [2022-07-12 01:34:14,156 INFO L78 Accepts]: Start accepts. Automaton has 58886 states and 65035 transitions. Word has length 475 [2022-07-12 01:34:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:14,157 INFO L495 AbstractCegarLoop]: Abstraction has 58886 states and 65035 transitions. [2022-07-12 01:34:14,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 58886 states and 65035 transitions. [2022-07-12 01:34:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-07-12 01:34:14,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:14,168 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:14,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 01:34:14,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -892559919, now seen corresponding path program 1 times [2022-07-12 01:34:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:14,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944703711] [2022-07-12 01:34:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-07-12 01:34:14,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:14,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944703711] [2022-07-12 01:34:14,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944703711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:14,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:14,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505691563] [2022-07-12 01:34:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:14,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:14,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:14,560 INFO L87 Difference]: Start difference. First operand 58886 states and 65035 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:16,453 INFO L93 Difference]: Finished difference Result 127985 states and 141202 transitions. [2022-07-12 01:34:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 483 [2022-07-12 01:34:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:16,537 INFO L225 Difference]: With dead ends: 127985 [2022-07-12 01:34:16,537 INFO L226 Difference]: Without dead ends: 68676 [2022-07-12 01:34:16,567 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 [2022-07-12 01:34:16,567 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 267 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:16,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 744 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68676 states. [2022-07-12 01:34:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68676 to 57575. [2022-07-12 01:34:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57575 states, 57574 states have (on average 1.1018167923020807) internal successors, (63436), 57574 states have internal predecessors, (63436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57575 states to 57575 states and 63436 transitions. [2022-07-12 01:34:17,298 INFO L78 Accepts]: Start accepts. Automaton has 57575 states and 63436 transitions. Word has length 483 [2022-07-12 01:34:17,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:17,298 INFO L495 AbstractCegarLoop]: Abstraction has 57575 states and 63436 transitions. [2022-07-12 01:34:17,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 57575 states and 63436 transitions. [2022-07-12 01:34:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-07-12 01:34:17,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:17,311 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:17,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 01:34:17,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:17,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:17,313 INFO L85 PathProgramCache]: Analyzing trace with hash 396274606, now seen corresponding path program 1 times [2022-07-12 01:34:17,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:17,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12731242] [2022-07-12 01:34:17,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:17,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-12 01:34:17,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:17,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12731242] [2022-07-12 01:34:17,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12731242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:17,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:17,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:17,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161028757] [2022-07-12 01:34:17,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:17,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:17,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:17,681 INFO L87 Difference]: Start difference. First operand 57575 states and 63436 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:19,460 INFO L93 Difference]: Finished difference Result 123654 states and 136226 transitions. [2022-07-12 01:34:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:19,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 560 [2022-07-12 01:34:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:19,536 INFO L225 Difference]: With dead ends: 123654 [2022-07-12 01:34:19,537 INFO L226 Difference]: Without dead ends: 65656 [2022-07-12 01:34:19,577 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 [2022-07-12 01:34:19,578 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 475 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:19,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 681 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65656 states. [2022-07-12 01:34:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65656 to 65650. [2022-07-12 01:34:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65650 states, 65649 states have (on average 1.0945178144373866) internal successors, (71854), 65649 states have internal predecessors, (71854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65650 states to 65650 states and 71854 transitions. [2022-07-12 01:34:20,677 INFO L78 Accepts]: Start accepts. Automaton has 65650 states and 71854 transitions. Word has length 560 [2022-07-12 01:34:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:20,678 INFO L495 AbstractCegarLoop]: Abstraction has 65650 states and 71854 transitions. [2022-07-12 01:34:20,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 65650 states and 71854 transitions. [2022-07-12 01:34:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2022-07-12 01:34:20,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:20,705 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:20,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 01:34:20,705 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1364765501, now seen corresponding path program 1 times [2022-07-12 01:34:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:20,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494975588] [2022-07-12 01:34:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:20,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-07-12 01:34:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:20,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494975588] [2022-07-12 01:34:20,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494975588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:20,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:20,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:20,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627723920] [2022-07-12 01:34:20,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:20,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:20,938 INFO L87 Difference]: Start difference. First operand 65650 states and 71854 transitions. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:22,804 INFO L93 Difference]: Finished difference Result 139375 states and 152646 transitions. [2022-07-12 01:34:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 697 [2022-07-12 01:34:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:22,901 INFO L225 Difference]: With dead ends: 139375 [2022-07-12 01:34:22,901 INFO L226 Difference]: Without dead ends: 73302 [2022-07-12 01:34:22,933 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 [2022-07-12 01:34:22,934 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 439 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:22,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 330 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73302 states. [2022-07-12 01:34:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73302 to 68195. [2022-07-12 01:34:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68195 states, 68194 states have (on average 1.0906238085462063) internal successors, (74374), 68194 states have internal predecessors, (74374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68195 states to 68195 states and 74374 transitions. [2022-07-12 01:34:23,889 INFO L78 Accepts]: Start accepts. Automaton has 68195 states and 74374 transitions. Word has length 697 [2022-07-12 01:34:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:23,890 INFO L495 AbstractCegarLoop]: Abstraction has 68195 states and 74374 transitions. [2022-07-12 01:34:23,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,890 INFO L276 IsEmpty]: Start isEmpty. Operand 68195 states and 74374 transitions. [2022-07-12 01:34:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2022-07-12 01:34:23,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:23,935 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:23,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 01:34:23,935 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash -309735421, now seen corresponding path program 1 times [2022-07-12 01:34:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127378082] [2022-07-12 01:34:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:23,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2022-07-12 01:34:24,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:24,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127378082] [2022-07-12 01:34:24,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127378082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:24,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:24,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873753621] [2022-07-12 01:34:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:24,271 INFO L87 Difference]: Start difference. First operand 68195 states and 74374 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:26,131 INFO L93 Difference]: Finished difference Result 140640 states and 153541 transitions. [2022-07-12 01:34:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:26,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 805 [2022-07-12 01:34:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:26,227 INFO L225 Difference]: With dead ends: 140640 [2022-07-12 01:34:26,227 INFO L226 Difference]: Without dead ends: 72447 [2022-07-12 01:34:26,264 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 [2022-07-12 01:34:26,264 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 453 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:26,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 714 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72447 states. [2022-07-12 01:34:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72447 to 65637. [2022-07-12 01:34:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65637 states, 65636 states have (on average 1.078874398196112) internal successors, (70813), 65636 states have internal predecessors, (70813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65637 states to 65637 states and 70813 transitions. [2022-07-12 01:34:27,189 INFO L78 Accepts]: Start accepts. Automaton has 65637 states and 70813 transitions. Word has length 805 [2022-07-12 01:34:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:27,189 INFO L495 AbstractCegarLoop]: Abstraction has 65637 states and 70813 transitions. [2022-07-12 01:34:27,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 65637 states and 70813 transitions. [2022-07-12 01:34:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2022-07-12 01:34:27,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:27,231 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:27,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 01:34:27,231 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash 545736305, now seen corresponding path program 1 times [2022-07-12 01:34:27,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:27,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810302820] [2022-07-12 01:34:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:27,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2022-07-12 01:34:27,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:27,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810302820] [2022-07-12 01:34:27,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810302820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:27,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:27,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224700211] [2022-07-12 01:34:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:27,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:27,794 INFO L87 Difference]: Start difference. First operand 65637 states and 70813 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:28,877 INFO L93 Difference]: Finished difference Result 126145 states and 136027 transitions. [2022-07-12 01:34:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 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 838 [2022-07-12 01:34:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:28,953 INFO L225 Difference]: With dead ends: 126145 [2022-07-12 01:34:28,953 INFO L226 Difference]: Without dead ends: 60510 [2022-07-12 01:34:28,993 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 [2022-07-12 01:34:28,994 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 358 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:28,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 70 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 01:34:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60510 states. [2022-07-12 01:34:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60510 to 60508. [2022-07-12 01:34:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60508 states, 60507 states have (on average 1.0776108549424033) internal successors, (65203), 60507 states have internal predecessors, (65203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60508 states to 60508 states and 65203 transitions. [2022-07-12 01:34:29,990 INFO L78 Accepts]: Start accepts. Automaton has 60508 states and 65203 transitions. Word has length 838 [2022-07-12 01:34:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:29,991 INFO L495 AbstractCegarLoop]: Abstraction has 60508 states and 65203 transitions. [2022-07-12 01:34:29,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 60508 states and 65203 transitions. [2022-07-12 01:34:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1434 [2022-07-12 01:34:30,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:30,069 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:30,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 01:34:30,069 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1461884006, now seen corresponding path program 1 times [2022-07-12 01:34:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:30,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183726860] [2022-07-12 01:34:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2526 backedges. 1840 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2022-07-12 01:34:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183726860] [2022-07-12 01:34:30,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183726860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:30,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:30,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912775097] [2022-07-12 01:34:30,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:30,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:30,821 INFO L87 Difference]: Start difference. First operand 60508 states and 65203 transitions. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:32,450 INFO L93 Difference]: Finished difference Result 119736 states and 128970 transitions. [2022-07-12 01:34:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:32,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 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 1433 [2022-07-12 01:34:32,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:32,518 INFO L225 Difference]: With dead ends: 119736 [2022-07-12 01:34:32,518 INFO L226 Difference]: Without dead ends: 59230 [2022-07-12 01:34:32,554 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 [2022-07-12 01:34:32,555 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 109 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:32,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 650 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 01:34:32,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59230 states. [2022-07-12 01:34:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59230 to 58378. [2022-07-12 01:34:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58378 states, 58377 states have (on average 1.0646316186169211) internal successors, (62150), 58377 states have internal predecessors, (62150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58378 states to 58378 states and 62150 transitions. [2022-07-12 01:34:33,402 INFO L78 Accepts]: Start accepts. Automaton has 58378 states and 62150 transitions. Word has length 1433 [2022-07-12 01:34:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:33,402 INFO L495 AbstractCegarLoop]: Abstraction has 58378 states and 62150 transitions. [2022-07-12 01:34:33,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 58378 states and 62150 transitions. [2022-07-12 01:34:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2022-07-12 01:34:33,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:33,664 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:33,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 01:34:33,664 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1577584933, now seen corresponding path program 1 times [2022-07-12 01:34:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:33,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553558135] [2022-07-12 01:34:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 2077 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2022-07-12 01:34:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:34,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553558135] [2022-07-12 01:34:34,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553558135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:34,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:34,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794074872] [2022-07-12 01:34:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:34,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:34,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:34,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:34,233 INFO L87 Difference]: Start difference. First operand 58378 states and 62150 transitions. Second operand has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:36,123 INFO L93 Difference]: Finished difference Result 120171 states and 127888 transitions. [2022-07-12 01:34:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 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 1501 [2022-07-12 01:34:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:36,198 INFO L225 Difference]: With dead ends: 120171 [2022-07-12 01:34:36,199 INFO L226 Difference]: Without dead ends: 61795 [2022-07-12 01:34:36,231 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 [2022-07-12 01:34:36,234 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 89 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:36,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 681 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61795 states. [2022-07-12 01:34:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61795 to 60506. [2022-07-12 01:34:36,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60506 states, 60505 states have (on average 1.063217915874721) internal successors, (64330), 60505 states have internal predecessors, (64330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60506 states to 60506 states and 64330 transitions. [2022-07-12 01:34:37,007 INFO L78 Accepts]: Start accepts. Automaton has 60506 states and 64330 transitions. Word has length 1501 [2022-07-12 01:34:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:37,008 INFO L495 AbstractCegarLoop]: Abstraction has 60506 states and 64330 transitions. [2022-07-12 01:34:37,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 60506 states and 64330 transitions. [2022-07-12 01:34:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1553 [2022-07-12 01:34:37,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:37,281 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-12 01:34:37,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 01:34:37,281 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash -37717548, now seen corresponding path program 1 times [2022-07-12 01:34:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:37,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543588222] [2022-07-12 01:34:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2898 backedges. 1361 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2022-07-12 01:34:37,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:37,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543588222] [2022-07-12 01:34:37,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543588222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:37,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:37,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:37,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557151518] [2022-07-12 01:34:37,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:37,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:37,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:37,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:37,910 INFO L87 Difference]: Start difference. First operand 60506 states and 64330 transitions. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:40,737 INFO L93 Difference]: Finished difference Result 139746 states and 148086 transitions. [2022-07-12 01:34:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:40,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 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 1552 [2022-07-12 01:34:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:40,739 INFO L225 Difference]: With dead ends: 139746 [2022-07-12 01:34:40,739 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 01:34:40,779 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 [2022-07-12 01:34:40,779 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 568 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:40,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 92 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:34:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 01:34:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 01:34:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 01:34:40,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1552 [2022-07-12 01:34:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:40,781 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 01:34:40,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 01:34:40,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 01:34:40,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 01:34:40,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 01:34:40,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.