./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.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 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:08:05,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:08:05,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:08:05,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:08:05,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:08:05,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:08:05,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:08:05,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:08:05,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:08:05,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:08:05,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:08:05,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:08:05,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:08:05,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:08:05,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:08:05,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:08:05,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:08:05,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:08:05,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:08:05,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:08:05,906 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:08:05,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:08:05,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:08:05,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:08:05,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:08:05,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:08:05,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:08:05,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:08:05,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:08:05,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:08:05,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:08:05,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:08:05,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:08:05,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:08:05,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:08:05,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:08:05,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:08:05,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:08:05,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:08:05,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:08:05,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:08:05,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:08:05,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:08:05,948 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:08:05,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:08:05,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:08:05,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:08:05,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:08:05,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:08:05,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:08:05,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:08:05,950 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:08:05,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:08:05,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:08:05,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:08:05,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:08:05,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:08:05,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:08:05,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:08:05,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:08:05,952 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:08:05,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:08:05,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:08:05,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:08:05,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:08:05,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:08:05,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:08:05,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:08:05,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:08:05,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:08:05,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:08:05,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:08:05,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:08:05,955 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:08:05,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:08:05,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:08:05,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 [2022-07-19 20:08:06,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:08:06,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:08:06,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:08:06,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:08:06,174 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:08:06,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-19 20:08:06,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422dc044e/f06639d97a264ea096b4baa33a35adc5/FLAGa4d4df5bf [2022-07-19 20:08:06,826 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:08:06,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-19 20:08:06,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422dc044e/f06639d97a264ea096b4baa33a35adc5/FLAGa4d4df5bf [2022-07-19 20:08:07,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422dc044e/f06639d97a264ea096b4baa33a35adc5 [2022-07-19 20:08:07,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:08:07,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:08:07,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:08:07,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:08:07,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:08:07,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:08:07" (1/1) ... [2022-07-19 20:08:07,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e93f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:07, skipping insertion in model container [2022-07-19 20:08:07,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:08:07" (1/1) ... [2022-07-19 20:08:07,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:08:07,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:08:07,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2022-07-19 20:08:07,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2022-07-19 20:08:08,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:08:08,101 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:08:08,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2022-07-19 20:08:08,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2022-07-19 20:08:08,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:08:08,462 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:08:08,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08 WrapperNode [2022-07-19 20:08:08,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:08:08,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:08:08,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:08:08,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:08:08,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:08,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:08,804 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4974 [2022-07-19 20:08:08,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:08:08,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:08:08,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:08:08,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:08:08,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:08,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:08,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:08,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:08,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:09,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:09,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:09,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:08:09,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:08:09,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:08:09,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:08:09,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (1/1) ... [2022-07-19 20:08:09,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:08:09,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:08:09,143 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) [2022-07-19 20:08:09,195 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 [2022-07-19 20:08:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:08:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:08:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:08:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:08:09,314 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:08:09,315 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:08:12,033 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:08:12,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:08:12,042 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:08:12,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:08:12 BoogieIcfgContainer [2022-07-19 20:08:12,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:08:12,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:08:12,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:08:12,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:08:12,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:08:07" (1/3) ... [2022-07-19 20:08:12,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2194eddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:08:12, skipping insertion in model container [2022-07-19 20:08:12,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:08:08" (2/3) ... [2022-07-19 20:08:12,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2194eddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:08:12, skipping insertion in model container [2022-07-19 20:08:12,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:08:12" (3/3) ... [2022-07-19 20:08:12,050 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-19 20:08:12,060 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:08:12,061 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:08:12,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:08:12,106 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@f4e9dd5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@276a3191 [2022-07-19 20:08:12,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:08:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 20:08:12,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:12,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:12,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2022-07-19 20:08:12,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:12,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315761067] [2022-07-19 20:08:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:12,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:12,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315761067] [2022-07-19 20:08:12,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315761067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:12,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:12,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:08:12,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813473353] [2022-07-19 20:08:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:12,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:08:12,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:12,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:08:12,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:08:12,261 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:12,320 INFO L93 Difference]: Finished difference Result 1732 states and 3290 transitions. [2022-07-19 20:08:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:08:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-19 20:08:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:12,340 INFO L225 Difference]: With dead ends: 1732 [2022-07-19 20:08:12,340 INFO L226 Difference]: Without dead ends: 812 [2022-07-19 20:08:12,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:08:12,351 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:12,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-07-19 20:08:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-07-19 20:08:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2022-07-19 20:08:12,416 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2022-07-19 20:08:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:12,417 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2022-07-19 20:08:12,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2022-07-19 20:08:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 20:08:12,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:12,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:12,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:08:12,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2022-07-19 20:08:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:12,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280767356] [2022-07-19 20:08:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:12,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:12,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280767356] [2022-07-19 20:08:12,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280767356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:12,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:12,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488176146] [2022-07-19 20:08:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:12,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:08:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:08:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:08:12,518 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:12,671 INFO L93 Difference]: Finished difference Result 852 states and 1593 transitions. [2022-07-19 20:08:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:08:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-19 20:08:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:12,675 INFO L225 Difference]: With dead ends: 852 [2022-07-19 20:08:12,675 INFO L226 Difference]: Without dead ends: 812 [2022-07-19 20:08:12,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:08:12,676 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 3 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6105 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:12,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6105 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-07-19 20:08:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-07-19 20:08:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2022-07-19 20:08:12,740 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2022-07-19 20:08:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:12,741 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2022-07-19 20:08:12,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2022-07-19 20:08:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 20:08:12,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:12,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:08:12,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2022-07-19 20:08:12,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:12,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842030996] [2022-07-19 20:08:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:12,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842030996] [2022-07-19 20:08:12,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842030996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:12,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:12,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:08:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389134369] [2022-07-19 20:08:12,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:12,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:08:12,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:08:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:08:12,796 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:12,815 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2022-07-19 20:08:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:08:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-19 20:08:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:12,819 INFO L225 Difference]: With dead ends: 878 [2022-07-19 20:08:12,819 INFO L226 Difference]: Without dead ends: 842 [2022-07-19 20:08:12,819 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 [2022-07-19 20:08:12,820 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:12,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-19 20:08:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-07-19 20:08:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2022-07-19 20:08:12,834 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2022-07-19 20:08:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:12,834 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2022-07-19 20:08:12,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2022-07-19 20:08:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 20:08:12,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:12,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:12,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:08:12,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2022-07-19 20:08:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029159695] [2022-07-19 20:08:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:12,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:12,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029159695] [2022-07-19 20:08:12,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029159695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:12,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:12,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2613448] [2022-07-19 20:08:12,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:12,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:08:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:12,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:08:12,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:08:12,886 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:12,973 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2022-07-19 20:08:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:08:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-19 20:08:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:12,977 INFO L225 Difference]: With dead ends: 1224 [2022-07-19 20:08:12,978 INFO L226 Difference]: Without dead ends: 1160 [2022-07-19 20:08:12,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:08:12,979 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:12,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-07-19 20:08:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2022-07-19 20:08:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 900 states have (on average 1.84) internal successors, (1656), 901 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2022-07-19 20:08:12,996 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2022-07-19 20:08:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:12,997 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2022-07-19 20:08:12,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2022-07-19 20:08:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 20:08:12,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:12,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:12,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:08:12,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:12,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2022-07-19 20:08:12,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:12,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774521144] [2022-07-19 20:08:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:13,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:13,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774521144] [2022-07-19 20:08:13,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774521144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:13,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:13,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:08:13,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646729197] [2022-07-19 20:08:13,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:13,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:08:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:13,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:08:13,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:08:13,041 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:13,066 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2022-07-19 20:08:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:08:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-19 20:08:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:13,070 INFO L225 Difference]: With dead ends: 1089 [2022-07-19 20:08:13,070 INFO L226 Difference]: Without dead ends: 963 [2022-07-19 20:08:13,071 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 [2022-07-19 20:08:13,071 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-19 20:08:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-07-19 20:08:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8185610010427529) internal successors, (1744), 960 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2022-07-19 20:08:13,091 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2022-07-19 20:08:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:13,091 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2022-07-19 20:08:13,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2022-07-19 20:08:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 20:08:13,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:13,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:13,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:08:13,093 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2022-07-19 20:08:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:13,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263420958] [2022-07-19 20:08:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:13,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263420958] [2022-07-19 20:08:13,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263420958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:13,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:13,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131715056] [2022-07-19 20:08:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:13,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:08:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:08:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:08:13,167 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:13,240 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2022-07-19 20:08:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:08:13,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-19 20:08:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:13,244 INFO L225 Difference]: With dead ends: 1146 [2022-07-19 20:08:13,244 INFO L226 Difference]: Without dead ends: 963 [2022-07-19 20:08:13,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:08:13,245 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 3002 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3002 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:13,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3002 Valid, 1636 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-19 20:08:13,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-07-19 20:08:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8154327424400416) internal successors, (1741), 960 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2022-07-19 20:08:13,265 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2022-07-19 20:08:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:13,265 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2022-07-19 20:08:13,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2022-07-19 20:08:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 20:08:13,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:13,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:13,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:08:13,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2022-07-19 20:08:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:13,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645747026] [2022-07-19 20:08:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:13,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:13,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645747026] [2022-07-19 20:08:13,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645747026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:13,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:13,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:08:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886907689] [2022-07-19 20:08:13,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:13,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:08:13,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:08:13,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:08:13,295 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:13,323 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2022-07-19 20:08:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:08:13,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-19 20:08:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:13,328 INFO L225 Difference]: With dead ends: 1291 [2022-07-19 20:08:13,328 INFO L226 Difference]: Without dead ends: 1108 [2022-07-19 20:08:13,329 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 [2022-07-19 20:08:13,329 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:13,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:13,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-07-19 20:08:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2022-07-19 20:08:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.7681159420289856) internal successors, (1952), 1105 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2022-07-19 20:08:13,354 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2022-07-19 20:08:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:13,354 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2022-07-19 20:08:13,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2022-07-19 20:08:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 20:08:13,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:13,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:13,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:08:13,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2022-07-19 20:08:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:13,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503182275] [2022-07-19 20:08:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:13,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503182275] [2022-07-19 20:08:13,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503182275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:13,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:13,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:08:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659021324] [2022-07-19 20:08:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:13,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:08:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:08:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:08:13,380 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:13,419 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2022-07-19 20:08:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:08:13,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-19 20:08:13,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:13,424 INFO L225 Difference]: With dead ends: 1690 [2022-07-19 20:08:13,424 INFO L226 Difference]: Without dead ends: 1362 [2022-07-19 20:08:13,425 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 [2022-07-19 20:08:13,425 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:13,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-19 20:08:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2022-07-19 20:08:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.6995581737849779) internal successors, (2308), 1359 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2022-07-19 20:08:13,465 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2022-07-19 20:08:13,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:13,466 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2022-07-19 20:08:13,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2022-07-19 20:08:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 20:08:13,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:13,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:13,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:08:13,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:13,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2022-07-19 20:08:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:13,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912025944] [2022-07-19 20:08:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:13,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:13,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:13,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912025944] [2022-07-19 20:08:13,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912025944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:13,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:13,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:08:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624535858] [2022-07-19 20:08:13,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:13,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:08:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:08:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:08:13,529 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:13,768 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2022-07-19 20:08:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:08:13,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-19 20:08:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:13,774 INFO L225 Difference]: With dead ends: 1883 [2022-07-19 20:08:13,774 INFO L226 Difference]: Without dead ends: 1881 [2022-07-19 20:08:13,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:08:13,775 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 424 mSDsluCounter, 8903 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 10434 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:13,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 10434 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2022-07-19 20:08:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2022-07-19 20:08:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1406 states have (on average 1.6728307254623045) internal successors, (2352), 1407 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2022-07-19 20:08:13,822 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2022-07-19 20:08:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:13,822 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2022-07-19 20:08:13,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2022-07-19 20:08:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:08:13,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:13,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:13,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:08:13,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2022-07-19 20:08:13,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:13,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129780043] [2022-07-19 20:08:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:13,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 20:08:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:13,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129780043] [2022-07-19 20:08:13,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129780043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:13,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:13,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:13,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586197713] [2022-07-19 20:08:13,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:13,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:08:13,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:08:13,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:08:13,864 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:14,016 INFO L93 Difference]: Finished difference Result 3436 states and 5200 transitions. [2022-07-19 20:08:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:08:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-19 20:08:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:14,024 INFO L225 Difference]: With dead ends: 3436 [2022-07-19 20:08:14,025 INFO L226 Difference]: Without dead ends: 2806 [2022-07-19 20:08:14,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:08:14,027 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 3073 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:14,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 3184 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-19 20:08:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2036. [2022-07-19 20:08:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2034 states have (on average 1.5870206489675516) internal successors, (3228), 2035 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3228 transitions. [2022-07-19 20:08:14,111 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3228 transitions. Word has length 64 [2022-07-19 20:08:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:14,112 INFO L495 AbstractCegarLoop]: Abstraction has 2036 states and 3228 transitions. [2022-07-19 20:08:14,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3228 transitions. [2022-07-19 20:08:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:08:14,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:14,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:14,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:08:14,113 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:14,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:14,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2022-07-19 20:08:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:14,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539362739] [2022-07-19 20:08:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:14,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:08:14,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:14,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539362739] [2022-07-19 20:08:14,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539362739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:14,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:14,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558889963] [2022-07-19 20:08:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:14,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:08:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:14,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:08:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:08:14,151 INFO L87 Difference]: Start difference. First operand 2036 states and 3228 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:14,361 INFO L93 Difference]: Finished difference Result 4064 states and 6076 transitions. [2022-07-19 20:08:14,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:08:14,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-19 20:08:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:14,372 INFO L225 Difference]: With dead ends: 4064 [2022-07-19 20:08:14,372 INFO L226 Difference]: Without dead ends: 3434 [2022-07-19 20:08:14,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:08:14,374 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3067 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:14,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3067 Valid, 3203 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-07-19 20:08:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2980. [2022-07-19 20:08:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 1.5218267293485561) internal successors, (4532), 2979 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4532 transitions. [2022-07-19 20:08:14,525 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4532 transitions. Word has length 64 [2022-07-19 20:08:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:14,525 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4532 transitions. [2022-07-19 20:08:14,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4532 transitions. [2022-07-19 20:08:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:08:14,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:14,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:14,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:08:14,527 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2022-07-19 20:08:14,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:14,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990693184] [2022-07-19 20:08:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:08:14,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:14,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990693184] [2022-07-19 20:08:14,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990693184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:14,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:14,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536695335] [2022-07-19 20:08:14,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:14,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:08:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:08:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:08:14,566 INFO L87 Difference]: Start difference. First operand 2980 states and 4532 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:14,766 INFO L93 Difference]: Finished difference Result 4332 states and 6456 transitions. [2022-07-19 20:08:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:08:14,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-19 20:08:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:14,779 INFO L225 Difference]: With dead ends: 4332 [2022-07-19 20:08:14,779 INFO L226 Difference]: Without dead ends: 3882 [2022-07-19 20:08:14,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:08:14,782 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 3066 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:14,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 3181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-07-19 20:08:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3428. [2022-07-19 20:08:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3426 states have (on average 1.5072971395213077) internal successors, (5164), 3427 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5164 transitions. [2022-07-19 20:08:14,995 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5164 transitions. Word has length 64 [2022-07-19 20:08:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:14,995 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5164 transitions. [2022-07-19 20:08:14,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:14,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5164 transitions. [2022-07-19 20:08:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:08:14,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:14,997 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:08:14,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:08:14,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2022-07-19 20:08:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:14,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250479522] [2022-07-19 20:08:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:15,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:15,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250479522] [2022-07-19 20:08:15,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250479522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:15,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:15,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:08:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577038618] [2022-07-19 20:08:15,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:15,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:08:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:15,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:08:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:08:15,082 INFO L87 Difference]: Start difference. First operand 3428 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:15,222 INFO L93 Difference]: Finished difference Result 6080 states and 8866 transitions. [2022-07-19 20:08:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:08:15,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-19 20:08:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:15,246 INFO L225 Difference]: With dead ends: 6080 [2022-07-19 20:08:15,246 INFO L226 Difference]: Without dead ends: 3430 [2022-07-19 20:08:15,250 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 [2022-07-19 20:08:15,251 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:15,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-07-19 20:08:15,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3428. [2022-07-19 20:08:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3426 states have (on average 1.4927028604786923) internal successors, (5114), 3427 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5114 transitions. [2022-07-19 20:08:15,411 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5114 transitions. Word has length 65 [2022-07-19 20:08:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:15,411 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5114 transitions. [2022-07-19 20:08:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5114 transitions. [2022-07-19 20:08:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:08:15,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:15,416 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] [2022-07-19 20:08:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:08:15,417 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2022-07-19 20:08:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453501134] [2022-07-19 20:08:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:15,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453501134] [2022-07-19 20:08:15,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453501134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:15,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:15,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:08:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842922527] [2022-07-19 20:08:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:15,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:08:15,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:15,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:08:15,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:08:15,469 INFO L87 Difference]: Start difference. First operand 3428 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:15,602 INFO L93 Difference]: Finished difference Result 4756 states and 6941 transitions. [2022-07-19 20:08:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:08:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-19 20:08:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:15,606 INFO L225 Difference]: With dead ends: 4756 [2022-07-19 20:08:15,606 INFO L226 Difference]: Without dead ends: 2106 [2022-07-19 20:08:15,609 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 [2022-07-19 20:08:15,609 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:15,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:15,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2022-07-19 20:08:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2022-07-19 20:08:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.5528068506184587) internal successors, (3264), 2103 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3264 transitions. [2022-07-19 20:08:15,696 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3264 transitions. Word has length 65 [2022-07-19 20:08:15,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:15,696 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3264 transitions. [2022-07-19 20:08:15,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3264 transitions. [2022-07-19 20:08:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:08:15,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:15,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:15,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:08:15,698 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:15,698 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2022-07-19 20:08:15,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:15,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921259971] [2022-07-19 20:08:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:15,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921259971] [2022-07-19 20:08:15,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921259971] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:08:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897767500] [2022-07-19 20:08:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:15,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:08:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:08:15,876 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) [2022-07-19 20:08:15,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:08:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:15,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 20:08:15,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:08:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:08:16,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:08:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:08:16,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897767500] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:08:16,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:08:16,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-19 20:08:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340551963] [2022-07-19 20:08:16,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:08:16,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 20:08:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:16,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 20:08:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-19 20:08:16,232 INFO L87 Difference]: Start difference. First operand 2104 states and 3264 transitions. Second operand has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:19,593 INFO L93 Difference]: Finished difference Result 13969 states and 19009 transitions. [2022-07-19 20:08:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-19 20:08:19,593 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 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 65 [2022-07-19 20:08:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:19,616 INFO L225 Difference]: With dead ends: 13969 [2022-07-19 20:08:19,617 INFO L226 Difference]: Without dead ends: 12643 [2022-07-19 20:08:19,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3478 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1620, Invalid=8082, Unknown=0, NotChecked=0, Total=9702 [2022-07-19 20:08:19,625 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 16470 mSDsluCounter, 5175 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16470 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:19,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16470 Valid, 6732 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:08:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12643 states. [2022-07-19 20:08:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12643 to 8585. [2022-07-19 20:08:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8585 states, 8583 states have (on average 1.365373412559711) internal successors, (11719), 8584 states have internal predecessors, (11719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8585 states to 8585 states and 11719 transitions. [2022-07-19 20:08:20,290 INFO L78 Accepts]: Start accepts. Automaton has 8585 states and 11719 transitions. Word has length 65 [2022-07-19 20:08:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:20,291 INFO L495 AbstractCegarLoop]: Abstraction has 8585 states and 11719 transitions. [2022-07-19 20:08:20,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8585 states and 11719 transitions. [2022-07-19 20:08:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:08:20,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:20,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:20,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:08:20,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 20:08:20,509 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:20,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:20,510 INFO L85 PathProgramCache]: Analyzing trace with hash 752221610, now seen corresponding path program 1 times [2022-07-19 20:08:20,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:20,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571861609] [2022-07-19 20:08:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:20,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:20,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:20,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571861609] [2022-07-19 20:08:20,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571861609] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:08:20,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834169234] [2022-07-19 20:08:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:20,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:08:20,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:08:20,639 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) [2022-07-19 20:08:20,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:08:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:20,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 20:08:20,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:08:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:21,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:08:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:21,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834169234] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:08:21,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:08:21,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-07-19 20:08:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808106771] [2022-07-19 20:08:21,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:08:21,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 20:08:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 20:08:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-19 20:08:21,490 INFO L87 Difference]: Start difference. First operand 8585 states and 11719 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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) [2022-07-19 20:08:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:35,139 INFO L93 Difference]: Finished difference Result 122089 states and 157892 transitions. [2022-07-19 20:08:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-07-19 20:08:35,140 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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 66 [2022-07-19 20:08:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:35,405 INFO L225 Difference]: With dead ends: 122089 [2022-07-19 20:08:35,405 INFO L226 Difference]: Without dead ends: 114282 [2022-07-19 20:08:35,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7739 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3290, Invalid=19060, Unknown=0, NotChecked=0, Total=22350 [2022-07-19 20:08:35,441 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 21495 mSDsluCounter, 9039 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21495 SdHoareTripleChecker+Valid, 10662 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:35,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21495 Valid, 10662 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:08:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114282 states. [2022-07-19 20:08:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114282 to 39515. [2022-07-19 20:08:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39515 states, 39513 states have (on average 1.2994204439045378) internal successors, (51344), 39514 states have internal predecessors, (51344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39515 states to 39515 states and 51344 transitions. [2022-07-19 20:08:39,849 INFO L78 Accepts]: Start accepts. Automaton has 39515 states and 51344 transitions. Word has length 66 [2022-07-19 20:08:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:39,850 INFO L495 AbstractCegarLoop]: Abstraction has 39515 states and 51344 transitions. [2022-07-19 20:08:39,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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) [2022-07-19 20:08:39,850 INFO L276 IsEmpty]: Start isEmpty. Operand 39515 states and 51344 transitions. [2022-07-19 20:08:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:08:39,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:39,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:39,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 20:08:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 20:08:40,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -434236462, now seen corresponding path program 1 times [2022-07-19 20:08:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:40,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226422286] [2022-07-19 20:08:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:40,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226422286] [2022-07-19 20:08:40,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226422286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:40,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:40,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:08:40,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339880254] [2022-07-19 20:08:40,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:40,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:08:40,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:08:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:08:40,101 INFO L87 Difference]: Start difference. First operand 39515 states and 51344 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:41,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:41,679 INFO L93 Difference]: Finished difference Result 57754 states and 74645 transitions. [2022-07-19 20:08:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:08:41,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-19 20:08:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:41,710 INFO L225 Difference]: With dead ends: 57754 [2022-07-19 20:08:41,711 INFO L226 Difference]: Without dead ends: 19017 [2022-07-19 20:08:41,744 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 [2022-07-19 20:08:41,744 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 17 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:41,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19017 states. [2022-07-19 20:08:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19017 to 17638. [2022-07-19 20:08:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17638 states, 17636 states have (on average 1.281980040825584) internal successors, (22609), 17637 states have internal predecessors, (22609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17638 states to 17638 states and 22609 transitions. [2022-07-19 20:08:43,316 INFO L78 Accepts]: Start accepts. Automaton has 17638 states and 22609 transitions. Word has length 66 [2022-07-19 20:08:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:43,316 INFO L495 AbstractCegarLoop]: Abstraction has 17638 states and 22609 transitions. [2022-07-19 20:08:43,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 17638 states and 22609 transitions. [2022-07-19 20:08:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:08:43,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:43,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:43,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:08:43,318 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:43,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1433407838, now seen corresponding path program 1 times [2022-07-19 20:08:43,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:43,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593089280] [2022-07-19 20:08:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:43,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:08:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:43,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593089280] [2022-07-19 20:08:43,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593089280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:43,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:43,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219837919] [2022-07-19 20:08:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:08:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:08:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:08:43,353 INFO L87 Difference]: Start difference. First operand 17638 states and 22609 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:45,049 INFO L93 Difference]: Finished difference Result 31781 states and 40480 transitions. [2022-07-19 20:08:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:08:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-19 20:08:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:45,070 INFO L225 Difference]: With dead ends: 31781 [2022-07-19 20:08:45,071 INFO L226 Difference]: Without dead ends: 14998 [2022-07-19 20:08:45,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:08:45,089 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4498 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:45,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 2965 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14998 states. [2022-07-19 20:08:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14998 to 14998. [2022-07-19 20:08:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14998 states, 14996 states have (on average 1.2658042144571886) internal successors, (18982), 14997 states have internal predecessors, (18982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14998 states to 14998 states and 18982 transitions. [2022-07-19 20:08:46,475 INFO L78 Accepts]: Start accepts. Automaton has 14998 states and 18982 transitions. Word has length 66 [2022-07-19 20:08:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:46,475 INFO L495 AbstractCegarLoop]: Abstraction has 14998 states and 18982 transitions. [2022-07-19 20:08:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14998 states and 18982 transitions. [2022-07-19 20:08:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:08:46,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:46,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:46,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:08:46,478 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1275703454, now seen corresponding path program 1 times [2022-07-19 20:08:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:46,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39237529] [2022-07-19 20:08:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 20:08:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:46,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39237529] [2022-07-19 20:08:46,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39237529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:46,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:46,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703579210] [2022-07-19 20:08:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:46,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:08:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:08:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:08:46,522 INFO L87 Difference]: Start difference. First operand 14998 states and 18982 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:47,696 INFO L93 Difference]: Finished difference Result 25541 states and 32009 transitions. [2022-07-19 20:08:47,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:08:47,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-19 20:08:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:47,709 INFO L225 Difference]: With dead ends: 25541 [2022-07-19 20:08:47,709 INFO L226 Difference]: Without dead ends: 11434 [2022-07-19 20:08:47,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:08:47,717 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4546 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4546 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:47,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4546 Valid, 2952 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:47,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2022-07-19 20:08:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 11434. [2022-07-19 20:08:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11434 states, 11432 states have (on average 1.2539363191042687) internal successors, (14335), 11433 states have internal predecessors, (14335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11434 states to 11434 states and 14335 transitions. [2022-07-19 20:08:48,737 INFO L78 Accepts]: Start accepts. Automaton has 11434 states and 14335 transitions. Word has length 66 [2022-07-19 20:08:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:48,737 INFO L495 AbstractCegarLoop]: Abstraction has 11434 states and 14335 transitions. [2022-07-19 20:08:48,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 11434 states and 14335 transitions. [2022-07-19 20:08:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:08:48,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:48,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:48,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:08:48,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2022-07-19 20:08:48,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:48,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047062995] [2022-07-19 20:08:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 20:08:48,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047062995] [2022-07-19 20:08:48,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047062995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:08:48,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:08:48,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:08:48,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80415050] [2022-07-19 20:08:48,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:08:48,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:08:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:08:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:08:48,770 INFO L87 Difference]: Start difference. First operand 11434 states and 14335 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:08:49,670 INFO L93 Difference]: Finished difference Result 19736 states and 24452 transitions. [2022-07-19 20:08:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:08:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-19 20:08:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:08:49,681 INFO L225 Difference]: With dead ends: 19736 [2022-07-19 20:08:49,681 INFO L226 Difference]: Without dead ends: 9116 [2022-07-19 20:08:49,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:08:49,689 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4510 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:08:49,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 2953 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:08:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9116 states. [2022-07-19 20:08:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9116 to 9116. [2022-07-19 20:08:50,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9116 states, 9114 states have (on average 1.2545534342769367) internal successors, (11434), 9115 states have internal predecessors, (11434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9116 states to 9116 states and 11434 transitions. [2022-07-19 20:08:50,550 INFO L78 Accepts]: Start accepts. Automaton has 9116 states and 11434 transitions. Word has length 66 [2022-07-19 20:08:50,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:08:50,550 INFO L495 AbstractCegarLoop]: Abstraction has 9116 states and 11434 transitions. [2022-07-19 20:08:50,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:08:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 9116 states and 11434 transitions. [2022-07-19 20:08:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:08:50,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:08:50,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:08:50,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:08:50,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:08:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:08:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash -791645332, now seen corresponding path program 1 times [2022-07-19 20:08:50,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:08:50,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924278651] [2022-07-19 20:08:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:50,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:08:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:08:50,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924278651] [2022-07-19 20:08:50,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924278651] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:08:50,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687170686] [2022-07-19 20:08:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:08:50,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:08:50,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:08:50,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:08:50,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 20:08:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:08:51,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 20:08:51,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:08:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:52,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:08:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:08:52,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687170686] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:08:52,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:08:52,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2022-07-19 20:08:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749605762] [2022-07-19 20:08:52,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:08:52,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 20:08:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:08:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 20:08:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-07-19 20:08:52,563 INFO L87 Difference]: Start difference. First operand 9116 states and 11434 transitions. Second operand has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 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) [2022-07-19 20:09:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:09:01,278 INFO L93 Difference]: Finished difference Result 18544 states and 22563 transitions. [2022-07-19 20:09:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-19 20:09:01,278 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 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 67 [2022-07-19 20:09:01,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:09:01,293 INFO L225 Difference]: With dead ends: 18544 [2022-07-19 20:09:01,293 INFO L226 Difference]: Without dead ends: 13200 [2022-07-19 20:09:01,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3273 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1888, Invalid=9884, Unknown=0, NotChecked=0, Total=11772 [2022-07-19 20:09:01,303 INFO L413 NwaCegarLoop]: 1728 mSDtfsCounter, 8573 mSDsluCounter, 27446 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8573 SdHoareTripleChecker+Valid, 29174 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:09:01,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8573 Valid, 29174 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:09:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13200 states. [2022-07-19 20:09:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13200 to 6190. [2022-07-19 20:09:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6190 states, 6188 states have (on average 1.278765352294764) internal successors, (7913), 6189 states have internal predecessors, (7913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:09:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6190 states to 6190 states and 7913 transitions. [2022-07-19 20:09:02,206 INFO L78 Accepts]: Start accepts. Automaton has 6190 states and 7913 transitions. Word has length 67 [2022-07-19 20:09:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:09:02,206 INFO L495 AbstractCegarLoop]: Abstraction has 6190 states and 7913 transitions. [2022-07-19 20:09:02,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 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) [2022-07-19 20:09:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states and 7913 transitions. [2022-07-19 20:09:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:09:02,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:09:02,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:09:02,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 20:09:02,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:09:02,408 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:09:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:09:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 531431905, now seen corresponding path program 1 times [2022-07-19 20:09:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:09:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826621370] [2022-07-19 20:09:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:09:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:09:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:09:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:09:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:09:02,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826621370] [2022-07-19 20:09:02,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826621370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:09:02,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:09:02,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:09:02,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65691664] [2022-07-19 20:09:02,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:09:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:09:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:09:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:09:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:09:02,444 INFO L87 Difference]: Start difference. First operand 6190 states and 7913 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:09:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:09:07,709 INFO L93 Difference]: Finished difference Result 8445 states and 12222 transitions. [2022-07-19 20:09:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 20:09:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-19 20:09:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:09:07,718 INFO L225 Difference]: With dead ends: 8445 [2022-07-19 20:09:07,718 INFO L226 Difference]: Without dead ends: 7692 [2022-07-19 20:09:07,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:09:07,720 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2330 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:09:07,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 786 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-19 20:09:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7692 states. [2022-07-19 20:09:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7692 to 7692. [2022-07-19 20:09:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 7690 states have (on average 1.2859557867360207) internal successors, (9889), 7691 states have internal predecessors, (9889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:09:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 9889 transitions. [2022-07-19 20:09:08,576 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 9889 transitions. Word has length 67 [2022-07-19 20:09:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:09:08,576 INFO L495 AbstractCegarLoop]: Abstraction has 7692 states and 9889 transitions. [2022-07-19 20:09:08,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:09:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 9889 transitions. [2022-07-19 20:09:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 20:09:08,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:09:08,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:09:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:09:08,578 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:09:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:09:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2141886399, now seen corresponding path program 1 times [2022-07-19 20:09:08,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:09:08,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475692465] [2022-07-19 20:09:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:09:08,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:09:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:09:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:09:08,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:09:08,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475692465] [2022-07-19 20:09:08,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475692465] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:09:08,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406294029] [2022-07-19 20:09:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:09:08,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:09:08,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:09:08,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:09:08,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 20:09:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:09:08,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-19 20:09:08,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:09:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:09:10,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:09:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:09:15,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406294029] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:09:15,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:09:15,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 19] total 52 [2022-07-19 20:09:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157119445] [2022-07-19 20:09:15,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:09:15,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-19 20:09:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:09:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-19 20:09:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2355, Unknown=0, NotChecked=0, Total=2652 [2022-07-19 20:09:15,388 INFO L87 Difference]: Start difference. First operand 7692 states and 9889 transitions. Second operand has 52 states, 52 states have (on average 3.5) internal successors, (182), 52 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) [2022-07-19 20:09:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:09:24,571 INFO L93 Difference]: Finished difference Result 15501 states and 19052 transitions. [2022-07-19 20:09:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-07-19 20:09:24,572 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.5) internal successors, (182), 52 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 68 [2022-07-19 20:09:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:09:24,585 INFO L225 Difference]: With dead ends: 15501 [2022-07-19 20:09:24,586 INFO L226 Difference]: Without dead ends: 12141 [2022-07-19 20:09:24,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4270 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2860, Invalid=14696, Unknown=0, NotChecked=0, Total=17556 [2022-07-19 20:09:24,594 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 29936 mSDsluCounter, 32908 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29936 SdHoareTripleChecker+Valid, 34591 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:09:24,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29936 Valid, 34591 Invalid, 2141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [220 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:09:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12141 states. [2022-07-19 20:09:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12141 to 6098. [2022-07-19 20:09:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6098 states, 6096 states have (on average 1.307250656167979) internal successors, (7969), 6097 states have internal predecessors, (7969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:09:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 7969 transitions. [2022-07-19 20:09:25,333 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 7969 transitions. Word has length 68 [2022-07-19 20:09:25,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:09:25,333 INFO L495 AbstractCegarLoop]: Abstraction has 6098 states and 7969 transitions. [2022-07-19 20:09:25,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.5) internal successors, (182), 52 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) [2022-07-19 20:09:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 7969 transitions. [2022-07-19 20:09:25,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 20:09:25,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:09:25,335 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:09:25,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 20:09:25,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:09:25,546 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:09:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:09:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash 364136701, now seen corresponding path program 1 times [2022-07-19 20:09:25,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:09:25,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604662353] [2022-07-19 20:09:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:09:25,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:09:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:09:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:09:25,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:09:25,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604662353] [2022-07-19 20:09:25,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604662353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:09:25,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756102105] [2022-07-19 20:09:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:09:25,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:09:25,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:09:25,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:09:25,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 20:09:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:09:25,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-19 20:09:25,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:09:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:09:27,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:09:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:09:35,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756102105] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:09:35,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:09:35,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 23] total 55 [2022-07-19 20:09:35,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863775665] [2022-07-19 20:09:35,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:09:35,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-19 20:09:35,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:09:35,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-19 20:09:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2735, Unknown=0, NotChecked=0, Total=2970 [2022-07-19 20:09:35,565 INFO L87 Difference]: Start difference. First operand 6098 states and 7969 transitions. Second operand has 55 states, 55 states have (on average 5.8) internal successors, (319), 55 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:11:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:11:46,336 INFO L93 Difference]: Finished difference Result 18477 states and 22366 transitions. [2022-07-19 20:11:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 457 states. [2022-07-19 20:11:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.8) internal successors, (319), 55 states have internal predecessors, (319), 0 states have call successors, (0), 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 113 [2022-07-19 20:11:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:11:46,357 INFO L225 Difference]: With dead ends: 18477 [2022-07-19 20:11:46,357 INFO L226 Difference]: Without dead ends: 16387 [2022-07-19 20:11:46,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107298 ImplicationChecksByTransitivity, 120.3s TimeCoverageRelationStatistics Valid=18586, Invalid=241004, Unknown=0, NotChecked=0, Total=259590 [2022-07-19 20:11:46,378 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 31981 mSDsluCounter, 41546 mSDsCounter, 0 mSdLazyCounter, 7082 mSolverCounterSat, 1677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31981 SdHoareTripleChecker+Valid, 43343 SdHoareTripleChecker+Invalid, 8759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1677 IncrementalHoareTripleChecker+Valid, 7082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:11:46,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31981 Valid, 43343 Invalid, 8759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1677 Valid, 7082 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 20:11:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16387 states. [2022-07-19 20:11:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16387 to 8328. [2022-07-19 20:11:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8328 states, 8326 states have (on average 1.2723997117463368) internal successors, (10594), 8327 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:11:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8328 states to 8328 states and 10594 transitions. [2022-07-19 20:11:48,015 INFO L78 Accepts]: Start accepts. Automaton has 8328 states and 10594 transitions. Word has length 113 [2022-07-19 20:11:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:11:48,015 INFO L495 AbstractCegarLoop]: Abstraction has 8328 states and 10594 transitions. [2022-07-19 20:11:48,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.8) internal successors, (319), 55 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:11:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 8328 states and 10594 transitions. [2022-07-19 20:11:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 20:11:48,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:11:48,017 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:11:48,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 20:11:48,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-19 20:11:48,218 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:11:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:11:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 532085968, now seen corresponding path program 1 times [2022-07-19 20:11:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:11:48,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042788122] [2022-07-19 20:11:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:11:48,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:11:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:11:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 41 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:11:48,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:11:48,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042788122] [2022-07-19 20:11:48,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042788122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:11:48,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992168592] [2022-07-19 20:11:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:11:48,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:11:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:11:48,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:11:48,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 20:11:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:11:48,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 20:11:48,568 INFO L286 TraceCheckSpWp]: Computing forward predicates...