./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label29.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label29.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 8f598b1db7f2b2cd1017a328f20419506fd47df23c7e336ea67891b462314c30 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:33:48,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:33:48,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:33:48,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:33:48,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:33:48,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:33:48,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:33:48,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:33:48,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:33:48,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:33:48,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:33:48,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:33:48,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:33:48,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:33:48,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:33:48,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:33:48,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:33:48,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:33:48,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:33:48,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:33:48,731 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:33:48,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:33:48,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:33:48,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:33:48,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:33:48,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:33:48,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:33:48,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:33:48,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:33:48,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:33:48,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:33:48,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:33:48,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:33:48,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:33:48,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:33:48,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:33:48,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:33:48,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:33:48,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:33:48,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:33:48,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:33:48,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:33:48,743 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:33:48,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:33:48,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:33:48,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:33:48,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:33:48,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:33:48,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:33:48,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:33:48,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:33:48,757 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:33:48,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:33:48,758 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:33:48,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:33:48,760 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:33:48,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:33:48,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:33:48,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:33:48,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:33:48,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:33:48,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:33:48,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:33:48,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:33:48,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:33:48,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:33:48,762 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:33:48,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:33:48,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:33:48,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f598b1db7f2b2cd1017a328f20419506fd47df23c7e336ea67891b462314c30 [2022-07-22 12:33:48,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:33:48,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:33:48,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:33:48,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:33:48,980 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:33:48,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label29.c [2022-07-22 12:33:49,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257c7e068/c58ef4e3bfeb4eaeb428baaec7ce96e9/FLAG5ed44b938 [2022-07-22 12:33:49,630 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:33:49,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label29.c [2022-07-22 12:33:49,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257c7e068/c58ef4e3bfeb4eaeb428baaec7ce96e9/FLAG5ed44b938 [2022-07-22 12:33:49,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257c7e068/c58ef4e3bfeb4eaeb428baaec7ce96e9 [2022-07-22 12:33:49,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:33:49,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:33:49,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:33:49,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:33:49,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:33:49,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:33:49" (1/1) ... [2022-07-22 12:33:49,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116d7f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:49, skipping insertion in model container [2022-07-22 12:33:49,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:33:49" (1/1) ... [2022-07-22 12:33:49,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:33:49,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:33:50,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label29.c[2333,2346] [2022-07-22 12:33:50,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:33:50,769 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:33:50,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label29.c[2333,2346] [2022-07-22 12:33:51,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:33:51,153 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:33:51,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51 WrapperNode [2022-07-22 12:33:51,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:33:51,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:33:51,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:33:51,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:33:51,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:51,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:51,659 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-22 12:33:51,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:33:51,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:33:51,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:33:51,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:33:51,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:51,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:51,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:51,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:51,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:52,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:52,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:52,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:33:52,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:33:52,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:33:52,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:33:52,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (1/1) ... [2022-07-22 12:33:52,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:33:52,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:33:52,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 12:33:52,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:33:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:33:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:33:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:33:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:33:52,287 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:33:52,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:33:55,564 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:33:55,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:33:55,583 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:33:55,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:33:55 BoogieIcfgContainer [2022-07-22 12:33:55,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:33:55,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:33:55,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:33:55,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:33:55,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:33:49" (1/3) ... [2022-07-22 12:33:55,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7443d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:33:55, skipping insertion in model container [2022-07-22 12:33:55,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:51" (2/3) ... [2022-07-22 12:33:55,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7443d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:33:55, skipping insertion in model container [2022-07-22 12:33:55,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:33:55" (3/3) ... [2022-07-22 12:33:55,592 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label29.c [2022-07-22 12:33:55,602 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:33:55,603 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:33:55,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:33:55,652 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@242049e6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@104cc8fb [2022-07-22 12:33:55,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:33:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:33:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 12:33:55,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:33:55,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:33:55,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:33:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:33:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1414013846, now seen corresponding path program 1 times [2022-07-22 12:33:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:33:55,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906092583] [2022-07-22 12:33:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:33:55,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:33:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:33:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:33:55,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:33:55,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906092583] [2022-07-22 12:33:55,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906092583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:33:55,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:33:55,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:33:55,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795612240] [2022-07-22 12:33:55,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:33:55,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:33:55,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:33:55,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:33:55,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:33:55,810 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:33:59,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:33:59,094 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-07-22 12:33:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:33:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-07-22 12:33:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:33:59,116 INFO L225 Difference]: With dead ends: 3082 [2022-07-22 12:33:59,116 INFO L226 Difference]: Without dead ends: 1899 [2022-07-22 12:33:59,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:33:59,124 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1025 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:33:59,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 12:33:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-07-22 12:33:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-07-22 12:33:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:33:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-07-22 12:33:59,277 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 14 [2022-07-22 12:33:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:33:59,278 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-07-22 12:33:59,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:33:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-07-22 12:33:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 12:33:59,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:33:59,281 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 12:33:59,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:33:59,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:33:59,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:33:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash 107877298, now seen corresponding path program 1 times [2022-07-22 12:33:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:33:59,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709153709] [2022-07-22 12:33:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:33:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:33:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:33:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:33:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:33:59,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709153709] [2022-07-22 12:33:59,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709153709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:33:59,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:33:59,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:33:59,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252747993] [2022-07-22 12:33:59,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:33:59,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:33:59,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:33:59,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:33:59,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:33:59,385 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:02,082 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-07-22 12:34:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-22 12:34:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:02,093 INFO L225 Difference]: With dead ends: 5384 [2022-07-22 12:34:02,093 INFO L226 Difference]: Without dead ends: 3492 [2022-07-22 12:34:02,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:02,096 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:02,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:34:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-07-22 12:34:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-07-22 12:34:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-07-22 12:34:02,145 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 79 [2022-07-22 12:34:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:02,145 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-07-22 12:34:02,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-07-22 12:34:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 12:34:02,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:02,147 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 12:34:02,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:34:02,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -845828371, now seen corresponding path program 1 times [2022-07-22 12:34:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:02,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571930863] [2022-07-22 12:34:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:34:02,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:02,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571930863] [2022-07-22 12:34:02,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571930863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:02,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:02,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:02,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396639616] [2022-07-22 12:34:02,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:02,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:02,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:02,221 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:04,929 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-07-22 12:34:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:04,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-22 12:34:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:04,949 INFO L225 Difference]: With dead ends: 10169 [2022-07-22 12:34:04,950 INFO L226 Difference]: Without dead ends: 6680 [2022-07-22 12:34:04,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:04,962 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:04,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:34:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-07-22 12:34:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-07-22 12:34:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-07-22 12:34:05,083 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 81 [2022-07-22 12:34:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:05,084 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-07-22 12:34:05,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-07-22 12:34:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 12:34:05,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:05,090 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 12:34:05,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:34:05,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash -477490145, now seen corresponding path program 1 times [2022-07-22 12:34:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:05,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847691490] [2022-07-22 12:34:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:34:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847691490] [2022-07-22 12:34:05,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847691490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:05,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111660293] [2022-07-22 12:34:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:05,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:05,239 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 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) [2022-07-22 12:34:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:08,060 INFO L93 Difference]: Finished difference Result 19629 states and 27006 transitions. [2022-07-22 12:34:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:08,075 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 125 [2022-07-22 12:34:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:08,115 INFO L225 Difference]: With dead ends: 19629 [2022-07-22 12:34:08,116 INFO L226 Difference]: Without dead ends: 12962 [2022-07-22 12:34:08,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:08,134 INFO L413 NwaCegarLoop]: 1861 mSDtfsCounter, 920 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:08,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 2001 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:34:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2022-07-22 12:34:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12957. [2022-07-22 12:34:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 1.272537820314912) internal successors, (16487), 12956 states have internal predecessors, (16487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 16487 transitions. [2022-07-22 12:34:08,330 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 16487 transitions. Word has length 125 [2022-07-22 12:34:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:08,332 INFO L495 AbstractCegarLoop]: Abstraction has 12957 states and 16487 transitions. [2022-07-22 12:34:08,332 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) [2022-07-22 12:34:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 16487 transitions. [2022-07-22 12:34:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 12:34:08,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:08,337 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 12:34:08,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:34:08,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:08,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:08,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1845724562, now seen corresponding path program 1 times [2022-07-22 12:34:08,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:08,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834354724] [2022-07-22 12:34:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:08,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:34:08,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:08,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834354724] [2022-07-22 12:34:08,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834354724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:08,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:08,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:08,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342396749] [2022-07-22 12:34:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:08,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:08,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:08,474 INFO L87 Difference]: Start difference. First operand 12957 states and 16487 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:11,174 INFO L93 Difference]: Finished difference Result 22765 states and 29540 transitions. [2022-07-22 12:34:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-07-22 12:34:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:11,194 INFO L225 Difference]: With dead ends: 22765 [2022-07-22 12:34:11,195 INFO L226 Difference]: Without dead ends: 12179 [2022-07-22 12:34:11,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:11,203 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:11,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1192 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:34:11,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12179 states. [2022-07-22 12:34:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12179 to 12170. [2022-07-22 12:34:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12170 states, 12169 states have (on average 1.2884378338400855) internal successors, (15679), 12169 states have internal predecessors, (15679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12170 states to 12170 states and 15679 transitions. [2022-07-22 12:34:11,333 INFO L78 Accepts]: Start accepts. Automaton has 12170 states and 15679 transitions. Word has length 130 [2022-07-22 12:34:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:11,334 INFO L495 AbstractCegarLoop]: Abstraction has 12170 states and 15679 transitions. [2022-07-22 12:34:11,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12170 states and 15679 transitions. [2022-07-22 12:34:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 12:34:11,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:11,336 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:11,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:34:11,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2024292359, now seen corresponding path program 1 times [2022-07-22 12:34:11,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:11,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772728742] [2022-07-22 12:34:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:11,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 12:34:11,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:11,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772728742] [2022-07-22 12:34:11,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772728742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:11,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:11,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076196860] [2022-07-22 12:34:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:11,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:11,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:11,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:11,397 INFO L87 Difference]: Start difference. First operand 12170 states and 15679 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:14,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:14,494 INFO L93 Difference]: Finished difference Result 35376 states and 45656 transitions. [2022-07-22 12:34:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:14,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 154 [2022-07-22 12:34:14,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:14,563 INFO L225 Difference]: With dead ends: 35376 [2022-07-22 12:34:14,564 INFO L226 Difference]: Without dead ends: 23208 [2022-07-22 12:34:14,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:14,609 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 780 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:14,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1236 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:34:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23208 states. [2022-07-22 12:34:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23208 to 22404. [2022-07-22 12:34:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1934115966611614) internal successors, (26736), 22403 states have internal predecessors, (26736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26736 transitions. [2022-07-22 12:34:14,873 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26736 transitions. Word has length 154 [2022-07-22 12:34:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:14,874 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26736 transitions. [2022-07-22 12:34:14,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26736 transitions. [2022-07-22 12:34:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-22 12:34:14,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:14,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-07-22 12:34:14,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:34:14,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:14,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1157253765, now seen corresponding path program 1 times [2022-07-22 12:34:14,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:14,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314111679] [2022-07-22 12:34:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:14,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 12:34:14,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:14,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314111679] [2022-07-22 12:34:14,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314111679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:14,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:14,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:14,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241730111] [2022-07-22 12:34:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:14,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:14,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:14,967 INFO L87 Difference]: Start difference. First operand 22404 states and 26736 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:17,519 INFO L93 Difference]: Finished difference Result 44019 states and 52673 transitions. [2022-07-22 12:34:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:17,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 243 [2022-07-22 12:34:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:17,546 INFO L225 Difference]: With dead ends: 44019 [2022-07-22 12:34:17,546 INFO L226 Difference]: Without dead ends: 22404 [2022-07-22 12:34:17,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:17,562 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:17,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1196 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:34:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22404 states. [2022-07-22 12:34:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22404 to 22404. [2022-07-22 12:34:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2022-07-22 12:34:17,773 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 243 [2022-07-22 12:34:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:17,773 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2022-07-22 12:34:17,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2022-07-22 12:34:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-22 12:34:17,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:17,780 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-07-22 12:34:17,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:34:17,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1131533274, now seen corresponding path program 1 times [2022-07-22 12:34:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:17,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021628859] [2022-07-22 12:34:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:17,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 12:34:17,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:17,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021628859] [2022-07-22 12:34:17,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021628859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:17,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:17,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:17,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717801633] [2022-07-22 12:34:17,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:17,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:17,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:17,869 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:20,905 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2022-07-22 12:34:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:20,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2022-07-22 12:34:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:20,948 INFO L225 Difference]: With dead ends: 55046 [2022-07-22 12:34:20,949 INFO L226 Difference]: Without dead ends: 33431 [2022-07-22 12:34:20,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:20,969 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 882 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:20,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:34:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2022-07-22 12:34:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2022-07-22 12:34:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.176135318992462) internal successors, (38382), 32634 states have internal predecessors, (38382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38382 transitions. [2022-07-22 12:34:21,436 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38382 transitions. Word has length 250 [2022-07-22 12:34:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:21,436 INFO L495 AbstractCegarLoop]: Abstraction has 32635 states and 38382 transitions. [2022-07-22 12:34:21,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38382 transitions. [2022-07-22 12:34:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-22 12:34:21,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:21,440 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:21,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:34:21,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash -187004170, now seen corresponding path program 1 times [2022-07-22 12:34:21,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:21,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505056273] [2022-07-22 12:34:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-22 12:34:21,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505056273] [2022-07-22 12:34:21,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505056273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:21,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:21,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:21,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874860678] [2022-07-22 12:34:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:21,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:21,543 INFO L87 Difference]: Start difference. First operand 32635 states and 38382 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:24,475 INFO L93 Difference]: Finished difference Result 76294 states and 91193 transitions. [2022-07-22 12:34:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 305 [2022-07-22 12:34:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:24,528 INFO L225 Difference]: With dead ends: 76294 [2022-07-22 12:34:24,528 INFO L226 Difference]: Without dead ends: 44448 [2022-07-22 12:34:24,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:24,553 INFO L413 NwaCegarLoop]: 1806 mSDtfsCounter, 850 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:24,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1950 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:34:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44448 states. [2022-07-22 12:34:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44448 to 43657. [2022-07-22 12:34:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43657 states, 43656 states have (on average 1.151663001649258) internal successors, (50277), 43656 states have internal predecessors, (50277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43657 states to 43657 states and 50277 transitions. [2022-07-22 12:34:25,166 INFO L78 Accepts]: Start accepts. Automaton has 43657 states and 50277 transitions. Word has length 305 [2022-07-22 12:34:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:25,167 INFO L495 AbstractCegarLoop]: Abstraction has 43657 states and 50277 transitions. [2022-07-22 12:34:25,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 43657 states and 50277 transitions. [2022-07-22 12:34:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-07-22 12:34:25,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:25,172 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:34:25,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 12:34:25,172 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -773060605, now seen corresponding path program 1 times [2022-07-22 12:34:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:25,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077903571] [2022-07-22 12:34:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 152 proven. 113 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 12:34:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077903571] [2022-07-22 12:34:25,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077903571] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:34:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089821763] [2022-07-22 12:34:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:25,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:34:25,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:34:25,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:34:25,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:34:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:25,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:34:25,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:34:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 12:34:25,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:34:25,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089821763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:25,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:34:25,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-22 12:34:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611604840] [2022-07-22 12:34:25,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:25,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:25,859 INFO L87 Difference]: Start difference. First operand 43657 states and 50277 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:28,476 INFO L93 Difference]: Finished difference Result 86516 states and 99752 transitions. [2022-07-22 12:34:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:28,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 320 [2022-07-22 12:34:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:28,523 INFO L225 Difference]: With dead ends: 86516 [2022-07-22 12:34:28,523 INFO L226 Difference]: Without dead ends: 43648 [2022-07-22 12:34:28,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:28,559 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1076 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:28,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 818 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:34:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43648 states. [2022-07-22 12:34:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43648 to 43647. [2022-07-22 12:34:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43647 states, 43646 states have (on average 1.1132749851074555) internal successors, (48590), 43646 states have internal predecessors, (48590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43647 states to 43647 states and 48590 transitions. [2022-07-22 12:34:28,996 INFO L78 Accepts]: Start accepts. Automaton has 43647 states and 48590 transitions. Word has length 320 [2022-07-22 12:34:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:28,996 INFO L495 AbstractCegarLoop]: Abstraction has 43647 states and 48590 transitions. [2022-07-22 12:34:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 43647 states and 48590 transitions. [2022-07-22 12:34:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-07-22 12:34:28,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:29,000 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:29,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:34:29,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 12:34:29,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1427385796, now seen corresponding path program 1 times [2022-07-22 12:34:29,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:29,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413120994] [2022-07-22 12:34:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:29,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-22 12:34:29,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:29,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413120994] [2022-07-22 12:34:29,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413120994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:29,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:29,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945175412] [2022-07-22 12:34:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:29,417 INFO L87 Difference]: Start difference. First operand 43647 states and 48590 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:32,076 INFO L93 Difference]: Finished difference Result 86503 states and 96385 transitions. [2022-07-22 12:34:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:32,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 339 [2022-07-22 12:34:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:32,119 INFO L225 Difference]: With dead ends: 86503 [2022-07-22 12:34:32,119 INFO L226 Difference]: Without dead ends: 43645 [2022-07-22 12:34:32,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:32,139 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1188 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:32,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1421 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:34:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2022-07-22 12:34:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2022-07-22 12:34:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086588914602571) internal successors, (47422), 43643 states have internal predecessors, (47422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47422 transitions. [2022-07-22 12:34:32,689 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47422 transitions. Word has length 339 [2022-07-22 12:34:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:32,690 INFO L495 AbstractCegarLoop]: Abstraction has 43644 states and 47422 transitions. [2022-07-22 12:34:32,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47422 transitions. [2022-07-22 12:34:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-07-22 12:34:32,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:32,694 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:34:32,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:32,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1320971521, now seen corresponding path program 1 times [2022-07-22 12:34:32,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:32,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375202632] [2022-07-22 12:34:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 12:34:32,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:32,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375202632] [2022-07-22 12:34:32,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375202632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:32,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:32,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:32,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121498564] [2022-07-22 12:34:32,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:32,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:34:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:34:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:34:32,782 INFO L87 Difference]: Start difference. First operand 43644 states and 47422 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:38,866 INFO L93 Difference]: Finished difference Result 150458 states and 163809 transitions. [2022-07-22 12:34:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:34:38,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 362 [2022-07-22 12:34:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:38,985 INFO L225 Difference]: With dead ends: 150458 [2022-07-22 12:34:38,985 INFO L226 Difference]: Without dead ends: 107603 [2022-07-22 12:34:39,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:34:39,006 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1713 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:39,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 753 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-22 12:34:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107603 states. [2022-07-22 12:34:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107603 to 104326. [2022-07-22 12:34:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794344596213754) internal successors, (112612), 104325 states have internal predecessors, (112612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112612 transitions. [2022-07-22 12:34:40,238 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112612 transitions. Word has length 362 [2022-07-22 12:34:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:40,238 INFO L495 AbstractCegarLoop]: Abstraction has 104326 states and 112612 transitions. [2022-07-22 12:34:40,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112612 transitions. [2022-07-22 12:34:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-07-22 12:34:40,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:40,275 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:40,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:34:40,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:40,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:40,276 INFO L85 PathProgramCache]: Analyzing trace with hash 308905835, now seen corresponding path program 1 times [2022-07-22 12:34:40,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:40,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263189630] [2022-07-22 12:34:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:40,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 321 proven. 113 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 12:34:40,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:40,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263189630] [2022-07-22 12:34:40,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263189630] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:34:40,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799874017] [2022-07-22 12:34:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:40,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:34:40,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:34:40,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:34:40,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:34:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:40,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 12:34:40,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:34:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-07-22 12:34:41,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:34:41,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799874017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:41,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:34:41,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 12:34:41,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41102456] [2022-07-22 12:34:41,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:41,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:41,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:41,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:41,358 INFO L87 Difference]: Start difference. First operand 104326 states and 112612 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:44,243 INFO L93 Difference]: Finished difference Result 202358 states and 218743 transitions. [2022-07-22 12:34:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:44,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 405 [2022-07-22 12:34:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:44,355 INFO L225 Difference]: With dead ends: 202358 [2022-07-22 12:34:44,356 INFO L226 Difference]: Without dead ends: 108272 [2022-07-22 12:34:44,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:34:44,382 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:44,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1167 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:34:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108272 states. [2022-07-22 12:34:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108272 to 106688. [2022-07-22 12:34:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106688 states, 106687 states have (on average 1.0717519472850487) internal successors, (114342), 106687 states have internal predecessors, (114342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106688 states to 106688 states and 114342 transitions. [2022-07-22 12:34:45,498 INFO L78 Accepts]: Start accepts. Automaton has 106688 states and 114342 transitions. Word has length 405 [2022-07-22 12:34:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:45,498 INFO L495 AbstractCegarLoop]: Abstraction has 106688 states and 114342 transitions. [2022-07-22 12:34:45,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 106688 states and 114342 transitions. [2022-07-22 12:34:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-07-22 12:34:45,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:45,504 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:45,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:34:45,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 12:34:45,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:45,722 INFO L85 PathProgramCache]: Analyzing trace with hash -397722901, now seen corresponding path program 1 times [2022-07-22 12:34:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:45,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457653879] [2022-07-22 12:34:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:45,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-22 12:34:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:46,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457653879] [2022-07-22 12:34:46,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457653879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:46,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:46,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596137981] [2022-07-22 12:34:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:46,068 INFO L87 Difference]: Start difference. First operand 106688 states and 114342 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:49,075 INFO L93 Difference]: Finished difference Result 214166 states and 229485 transitions. [2022-07-22 12:34:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2022-07-22 12:34:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:49,213 INFO L225 Difference]: With dead ends: 214166 [2022-07-22 12:34:49,214 INFO L226 Difference]: Without dead ends: 108267 [2022-07-22 12:34:49,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:49,242 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 938 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:49,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1436 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 12:34:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108267 states. [2022-07-22 12:34:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108267 to 106678. [2022-07-22 12:34:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106678 states, 106677 states have (on average 1.0612034459161768) internal successors, (113206), 106677 states have internal predecessors, (113206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106678 states to 106678 states and 113206 transitions. [2022-07-22 12:34:50,610 INFO L78 Accepts]: Start accepts. Automaton has 106678 states and 113206 transitions. Word has length 451 [2022-07-22 12:34:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:50,612 INFO L495 AbstractCegarLoop]: Abstraction has 106678 states and 113206 transitions. [2022-07-22 12:34:50,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 106678 states and 113206 transitions. [2022-07-22 12:34:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-07-22 12:34:50,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:50,620 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:50,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 12:34:50,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1185337965, now seen corresponding path program 1 times [2022-07-22 12:34:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:50,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952205706] [2022-07-22 12:34:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-22 12:34:51,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:51,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952205706] [2022-07-22 12:34:51,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952205706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:51,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:51,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:34:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245449183] [2022-07-22 12:34:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:51,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:51,081 INFO L87 Difference]: Start difference. First operand 106678 states and 113206 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:54,449 INFO L93 Difference]: Finished difference Result 237756 states and 253279 transitions. [2022-07-22 12:34:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2022-07-22 12:34:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:54,605 INFO L225 Difference]: With dead ends: 237756 [2022-07-22 12:34:54,606 INFO L226 Difference]: Without dead ends: 131867 [2022-07-22 12:34:54,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:54,660 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 876 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:54,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 745 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:34:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131867 states. [2022-07-22 12:34:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131867 to 130274. [2022-07-22 12:34:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130274 states, 130273 states have (on average 1.059306226155842) internal successors, (137999), 130273 states have internal predecessors, (137999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130274 states to 130274 states and 137999 transitions. [2022-07-22 12:34:56,576 INFO L78 Accepts]: Start accepts. Automaton has 130274 states and 137999 transitions. Word has length 475 [2022-07-22 12:34:56,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:34:56,577 INFO L495 AbstractCegarLoop]: Abstraction has 130274 states and 137999 transitions. [2022-07-22 12:34:56,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 130274 states and 137999 transitions. [2022-07-22 12:34:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-22 12:34:56,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:34:56,584 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:34:56,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 12:34:56,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:34:56,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1649171128, now seen corresponding path program 1 times [2022-07-22 12:34:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:56,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462367132] [2022-07-22 12:34:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:56,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:34:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-07-22 12:34:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:34:56,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462367132] [2022-07-22 12:34:56,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462367132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:34:56,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:34:56,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:34:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240979047] [2022-07-22 12:34:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:34:56,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:34:56,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:34:56,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:34:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:56,714 INFO L87 Difference]: Start difference. First operand 130274 states and 137999 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:34:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:34:58,919 INFO L93 Difference]: Finished difference Result 245571 states and 260677 transitions. [2022-07-22 12:34:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:34:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 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 492 [2022-07-22 12:34:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:34:59,068 INFO L225 Difference]: With dead ends: 245571 [2022-07-22 12:34:59,068 INFO L226 Difference]: Without dead ends: 129471 [2022-07-22 12:34:59,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:34:59,107 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1610 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:34:59,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 294 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:34:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129471 states. [2022-07-22 12:35:00,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129471 to 129470. [2022-07-22 12:35:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129470 states, 129469 states have (on average 1.0591261228556643) internal successors, (137124), 129469 states have internal predecessors, (137124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129470 states to 129470 states and 137124 transitions. [2022-07-22 12:35:00,665 INFO L78 Accepts]: Start accepts. Automaton has 129470 states and 137124 transitions. Word has length 492 [2022-07-22 12:35:00,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:00,666 INFO L495 AbstractCegarLoop]: Abstraction has 129470 states and 137124 transitions. [2022-07-22 12:35:00,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 129470 states and 137124 transitions. [2022-07-22 12:35:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-07-22 12:35:00,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:00,674 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:00,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 12:35:00,674 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:00,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1113896334, now seen corresponding path program 1 times [2022-07-22 12:35:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:00,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429975637] [2022-07-22 12:35:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:00,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-22 12:35:00,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:35:00,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429975637] [2022-07-22 12:35:00,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429975637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:35:00,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:35:00,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:35:00,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954336508] [2022-07-22 12:35:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:35:00,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:35:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:35:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:35:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:35:00,836 INFO L87 Difference]: Start difference. First operand 129470 states and 137124 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:04,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:04,061 INFO L93 Difference]: Finished difference Result 258954 states and 274249 transitions. [2022-07-22 12:35:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:35:04,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2022-07-22 12:35:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:04,211 INFO L225 Difference]: With dead ends: 258954 [2022-07-22 12:35:04,211 INFO L226 Difference]: Without dead ends: 128699 [2022-07-22 12:35:04,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:35:04,280 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 791 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:04,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1800 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:35:04,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128699 states. [2022-07-22 12:35:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128699 to 127107. [2022-07-22 12:35:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127107 states, 127106 states have (on average 1.0460088430129184) internal successors, (132954), 127106 states have internal predecessors, (132954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127107 states to 127107 states and 132954 transitions. [2022-07-22 12:35:05,796 INFO L78 Accepts]: Start accepts. Automaton has 127107 states and 132954 transitions. Word has length 494 [2022-07-22 12:35:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:05,796 INFO L495 AbstractCegarLoop]: Abstraction has 127107 states and 132954 transitions. [2022-07-22 12:35:05,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 127107 states and 132954 transitions. [2022-07-22 12:35:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-07-22 12:35:05,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:05,803 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 12:35:05,803 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -711264652, now seen corresponding path program 1 times [2022-07-22 12:35:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446340410] [2022-07-22 12:35:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-07-22 12:35:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:35:05,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446340410] [2022-07-22 12:35:05,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446340410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:35:05,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:35:05,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:35:05,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446759712] [2022-07-22 12:35:05,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:35:05,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:35:05,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:35:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:35:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:35:05,926 INFO L87 Difference]: Start difference. First operand 127107 states and 132954 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:10,655 INFO L93 Difference]: Finished difference Result 321244 states and 336605 transitions. [2022-07-22 12:35:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:35:10,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 503 [2022-07-22 12:35:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:10,872 INFO L225 Difference]: With dead ends: 321244 [2022-07-22 12:35:10,873 INFO L226 Difference]: Without dead ends: 194926 [2022-07-22 12:35:10,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:35:10,909 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 951 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:10,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 802 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 12:35:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194926 states. [2022-07-22 12:35:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194926 to 191670. [2022-07-22 12:35:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191670 states, 191669 states have (on average 1.0450203214917384) internal successors, (200298), 191669 states have internal predecessors, (200298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191670 states to 191670 states and 200298 transitions. [2022-07-22 12:35:13,140 INFO L78 Accepts]: Start accepts. Automaton has 191670 states and 200298 transitions. Word has length 503 [2022-07-22 12:35:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:13,141 INFO L495 AbstractCegarLoop]: Abstraction has 191670 states and 200298 transitions. [2022-07-22 12:35:13,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 191670 states and 200298 transitions. [2022-07-22 12:35:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-07-22 12:35:13,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:13,152 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 12:35:13,152 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1749767836, now seen corresponding path program 1 times [2022-07-22 12:35:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012912734] [2022-07-22 12:35:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:35:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-22 12:35:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:35:13,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012912734] [2022-07-22 12:35:13,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012912734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:35:13,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:35:13,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:35:13,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732820509] [2022-07-22 12:35:13,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:35:13,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:35:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:35:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:35:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:35:13,274 INFO L87 Difference]: Start difference. First operand 191670 states and 200298 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:35:17,986 INFO L93 Difference]: Finished difference Result 434528 states and 455277 transitions. [2022-07-22 12:35:17,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:35:17,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 565 [2022-07-22 12:35:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:35:18,402 INFO L225 Difference]: With dead ends: 434528 [2022-07-22 12:35:18,402 INFO L226 Difference]: Without dead ends: 258604 [2022-07-22 12:35:18,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:35:18,540 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1018 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:35:18,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 568 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:35:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258604 states. [2022-07-22 12:35:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258604 to 258597. [2022-07-22 12:35:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258597 states, 258596 states have (on average 1.0423208402295472) internal successors, (269540), 258596 states have internal predecessors, (269540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258597 states to 258597 states and 269540 transitions. [2022-07-22 12:35:21,880 INFO L78 Accepts]: Start accepts. Automaton has 258597 states and 269540 transitions. Word has length 565 [2022-07-22 12:35:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:35:21,880 INFO L495 AbstractCegarLoop]: Abstraction has 258597 states and 269540 transitions. [2022-07-22 12:35:21,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:35:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 258597 states and 269540 transitions. [2022-07-22 12:35:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-22 12:35:21,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:35:21,904 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:35:21,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 12:35:21,905 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:35:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:35:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1999906746, now seen corresponding path program 1 times [2022-07-22 12:35:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:35:21,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955146613] [2022-07-22 12:35:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:35:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:35:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat