./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label01.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 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:30:26,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:30:26,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:30:26,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:30:26,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:30:26,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:30:26,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:30:26,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:30:26,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:30:26,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:30:26,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:30:26,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:30:26,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:30:26,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:30:26,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:30:26,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:30:26,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:30:26,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:30:26,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:30:26,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:30:26,879 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:30:26,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:30:26,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:30:26,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:30:26,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:30:26,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:30:26,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:30:26,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:30:26,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:30:26,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:30:26,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:30:26,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:30:26,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:30:26,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:30:26,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:30:26,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:30:26,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:30:26,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:30:26,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:30:26,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:30:26,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:30:26,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:30:26,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:30:26,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:30:26,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:30:26,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:30:26,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:30:26,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:30:26,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:30:26,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:30:26,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:30:26,928 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:30:26,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:30:26,929 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:30:26,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:30:26,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:30:26,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:30:26,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:30:26,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:30:26,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:30:26,930 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:30:26,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:30:26,931 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:30:26,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:30:26,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:30:26,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:30:26,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:30:26,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:30:26,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:30:26,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:30:26,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:30:26,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:30:26,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:30:26,933 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:30:26,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:30:26,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:30:26,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e [2022-07-22 12:30:27,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:30:27,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:30:27,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:30:27,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:30:27,176 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:30:27,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2022-07-22 12:30:27,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef698003d/852f1ec4c3834905b0c81bb0da9d3649/FLAG1741a12ef [2022-07-22 12:30:27,803 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:30:27,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2022-07-22 12:30:27,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef698003d/852f1ec4c3834905b0c81bb0da9d3649/FLAG1741a12ef [2022-07-22 12:30:28,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef698003d/852f1ec4c3834905b0c81bb0da9d3649 [2022-07-22 12:30:28,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:30:28,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:30:28,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:30:28,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:30:28,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:30:28,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:30:28" (1/1) ... [2022-07-22 12:30:28,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a802aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:28, skipping insertion in model container [2022-07-22 12:30:28,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:30:28" (1/1) ... [2022-07-22 12:30:28,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:30:28,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:30:28,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label01.c[7003,7016] [2022-07-22 12:30:28,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:30:28,881 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:30:28,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label01.c[7003,7016] [2022-07-22 12:30:29,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:30:29,272 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:30:29,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29 WrapperNode [2022-07-22 12:30:29,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:30:29,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:30:29,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:30:29,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:30:29,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:29,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:29,778 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-22 12:30:29,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:30:29,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:30:29,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:30:29,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:30:29,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:29,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:29,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:29,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:30,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:30,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:30,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:30,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:30:30,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:30:30,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:30:30,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:30:30,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (1/1) ... [2022-07-22 12:30:30,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:30:30,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:30:30,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 12:30:30,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:30:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:30:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:30:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:30:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:30:30,324 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:30:30,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:30:33,637 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:30:33,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:30:33,670 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:30:33,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:30:33 BoogieIcfgContainer [2022-07-22 12:30:33,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:30:33,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:30:33,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:30:33,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:30:33,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:30:28" (1/3) ... [2022-07-22 12:30:33,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b9d201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:30:33, skipping insertion in model container [2022-07-22 12:30:33,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:29" (2/3) ... [2022-07-22 12:30:33,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b9d201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:30:33, skipping insertion in model container [2022-07-22 12:30:33,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:30:33" (3/3) ... [2022-07-22 12:30:33,681 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label01.c [2022-07-22 12:30:33,691 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:30:33,691 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:30:33,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:30:33,771 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@294d92db, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cbd3e2e [2022-07-22 12:30:33,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:30:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-22 12:30:33,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:33,795 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] [2022-07-22 12:30:33,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2022-07-22 12:30:33,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:33,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799673422] [2022-07-22 12:30:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:33,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:34,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:34,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799673422] [2022-07-22 12:30:34,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799673422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:34,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:34,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:30:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883480503] [2022-07-22 12:30:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:34,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:34,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:34,083 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:37,432 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-07-22 12:30:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:30:37,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-07-22 12:30:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:37,449 INFO L225 Difference]: With dead ends: 3082 [2022-07-22 12:30:37,459 INFO L226 Difference]: Without dead ends: 1899 [2022-07-22 12:30:37,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:37,472 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 990 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:37,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 12:30:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-07-22 12:30:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-07-22 12:30:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-07-22 12:30:37,563 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 49 [2022-07-22 12:30:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:37,564 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-07-22 12:30:37,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-07-22 12:30:37,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 12:30:37,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:37,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:37,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:30:37,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash -285580078, now seen corresponding path program 1 times [2022-07-22 12:30:37,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:37,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998814065] [2022-07-22 12:30:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:37,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:37,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:37,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998814065] [2022-07-22 12:30:37,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998814065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:37,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:37,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:30:37,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769742656] [2022-07-22 12:30:37,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:37,686 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:40,491 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-07-22 12:30:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:30:40,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-07-22 12:30:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:40,503 INFO L225 Difference]: With dead ends: 5384 [2022-07-22 12:30:40,503 INFO L226 Difference]: Without dead ends: 3492 [2022-07-22 12:30:40,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:40,509 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:40,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:30:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-07-22 12:30:40,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-07-22 12:30:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-07-22 12:30:40,570 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 114 [2022-07-22 12:30:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:40,572 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-07-22 12:30:40,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-07-22 12:30:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 12:30:40,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:40,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:40,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:30:40,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:40,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1860662409, now seen corresponding path program 1 times [2022-07-22 12:30:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:40,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011567131] [2022-07-22 12:30:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:40,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:40,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011567131] [2022-07-22 12:30:40,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011567131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:40,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:40,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:30:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612129757] [2022-07-22 12:30:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:40,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:40,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:40,714 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:43,163 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-07-22 12:30:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:30:43,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-07-22 12:30:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:43,196 INFO L225 Difference]: With dead ends: 10169 [2022-07-22 12:30:43,196 INFO L226 Difference]: Without dead ends: 6680 [2022-07-22 12:30:43,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:43,209 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:43,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:30:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-07-22 12:30:43,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-07-22 12:30:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-07-22 12:30:43,323 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 116 [2022-07-22 12:30:43,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:43,324 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-07-22 12:30:43,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-07-22 12:30:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 12:30:43,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:43,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:43,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:30:43,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:43,331 INFO L85 PathProgramCache]: Analyzing trace with hash 506522501, now seen corresponding path program 1 times [2022-07-22 12:30:43,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:43,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124411929] [2022-07-22 12:30:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:43,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:43,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124411929] [2022-07-22 12:30:43,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124411929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:43,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:43,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:30:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791623483] [2022-07-22 12:30:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:43,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:43,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:43,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:43,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:43,511 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:46,164 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-07-22 12:30:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:30:46,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-07-22 12:30:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:46,194 INFO L225 Difference]: With dead ends: 14123 [2022-07-22 12:30:46,195 INFO L226 Difference]: Without dead ends: 7456 [2022-07-22 12:30:46,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:46,209 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:46,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:30:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-07-22 12:30:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-07-22 12:30:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-07-22 12:30:46,342 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 160 [2022-07-22 12:30:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-07-22 12:30:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-07-22 12:30:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 12:30:46,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:46,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:46,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:30:46,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:46,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:46,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1459044689, now seen corresponding path program 1 times [2022-07-22 12:30:46,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:46,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176577678] [2022-07-22 12:30:46,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:46,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:46,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:46,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176577678] [2022-07-22 12:30:46,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176577678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:46,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:46,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:30:46,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509979238] [2022-07-22 12:30:46,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:46,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:30:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:46,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:30:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:30:46,468 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:52,500 INFO L93 Difference]: Finished difference Result 26116 states and 35959 transitions. [2022-07-22 12:30:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:30:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2022-07-22 12:30:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:52,563 INFO L225 Difference]: With dead ends: 26116 [2022-07-22 12:30:52,564 INFO L226 Difference]: Without dead ends: 19449 [2022-07-22 12:30:52,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:30:52,571 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 1637 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 7397 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 8037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 7397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:52,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 1187 Invalid, 8037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 7397 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-22 12:30:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19449 states. [2022-07-22 12:30:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19449 to 19303. [2022-07-22 12:30:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 1.2778468552481608) internal successors, (24665), 19302 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 24665 transitions. [2022-07-22 12:30:52,819 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 24665 transitions. Word has length 174 [2022-07-22 12:30:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:52,821 INFO L495 AbstractCegarLoop]: Abstraction has 19303 states and 24665 transitions. [2022-07-22 12:30:52,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 24665 transitions. [2022-07-22 12:30:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-22 12:30:52,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:52,827 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:52,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:30:52,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1058846290, now seen corresponding path program 1 times [2022-07-22 12:30:52,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:52,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612382843] [2022-07-22 12:30:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-22 12:30:52,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:52,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612382843] [2022-07-22 12:30:52,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612382843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:52,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:52,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:30:52,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404903652] [2022-07-22 12:30:52,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:52,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:52,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:52,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:52,961 INFO L87 Difference]: Start difference. First operand 19303 states and 24665 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:55,566 INFO L93 Difference]: Finished difference Result 33881 states and 44171 transitions. [2022-07-22 12:30:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:30:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2022-07-22 12:30:55,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:55,594 INFO L225 Difference]: With dead ends: 33881 [2022-07-22 12:30:55,595 INFO L226 Difference]: Without dead ends: 19312 [2022-07-22 12:30:55,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:55,609 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:55,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1212 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:30:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2022-07-22 12:30:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 19303. [2022-07-22 12:30:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 1.2765516526784788) internal successors, (24640), 19302 states have internal predecessors, (24640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 24640 transitions. [2022-07-22 12:30:55,794 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 24640 transitions. Word has length 261 [2022-07-22 12:30:55,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:55,794 INFO L495 AbstractCegarLoop]: Abstraction has 19303 states and 24640 transitions. [2022-07-22 12:30:55,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 24640 transitions. [2022-07-22 12:30:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-22 12:30:55,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:55,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:55,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:30:55,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:55,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1215870024, now seen corresponding path program 1 times [2022-07-22 12:30:55,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:55,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727140529] [2022-07-22 12:30:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:55,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:55,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:55,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727140529] [2022-07-22 12:30:55,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727140529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:55,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:55,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:30:55,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358030616] [2022-07-22 12:30:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:55,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:55,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:55,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:55,884 INFO L87 Difference]: Start difference. First operand 19303 states and 24640 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:58,747 INFO L93 Difference]: Finished difference Result 51975 states and 67214 transitions. [2022-07-22 12:30:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:30:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2022-07-22 12:30:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:58,792 INFO L225 Difference]: With dead ends: 51975 [2022-07-22 12:30:58,793 INFO L226 Difference]: Without dead ends: 32674 [2022-07-22 12:30:58,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:58,812 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 843 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:58,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1993 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:30:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32674 states. [2022-07-22 12:30:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32674 to 31881. [2022-07-22 12:30:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31881 states, 31880 states have (on average 1.224215809284818) internal successors, (39028), 31880 states have internal predecessors, (39028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31881 states to 31881 states and 39028 transitions. [2022-07-22 12:30:59,155 INFO L78 Accepts]: Start accepts. Automaton has 31881 states and 39028 transitions. Word has length 263 [2022-07-22 12:30:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:59,156 INFO L495 AbstractCegarLoop]: Abstraction has 31881 states and 39028 transitions. [2022-07-22 12:30:59,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 31881 states and 39028 transitions. [2022-07-22 12:30:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-07-22 12:30:59,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:59,159 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:30:59,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -852280536, now seen corresponding path program 1 times [2022-07-22 12:30:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:59,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141375412] [2022-07-22 12:30:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 12:30:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:59,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141375412] [2022-07-22 12:30:59,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141375412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:59,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:59,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:30:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134043402] [2022-07-22 12:30:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:59,250 INFO L87 Difference]: Start difference. First operand 31881 states and 39028 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:02,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:02,368 INFO L93 Difference]: Finished difference Result 88168 states and 109034 transitions. [2022-07-22 12:31:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:02,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2022-07-22 12:31:02,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:02,425 INFO L225 Difference]: With dead ends: 88168 [2022-07-22 12:31:02,425 INFO L226 Difference]: Without dead ends: 57076 [2022-07-22 12:31:02,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:02,441 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 885 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:02,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 900 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:31:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57076 states. [2022-07-22 12:31:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57076 to 55492. [2022-07-22 12:31:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55492 states, 55491 states have (on average 1.1844263033645095) internal successors, (65725), 55491 states have internal predecessors, (65725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55492 states to 55492 states and 65725 transitions. [2022-07-22 12:31:02,932 INFO L78 Accepts]: Start accepts. Automaton has 55492 states and 65725 transitions. Word has length 285 [2022-07-22 12:31:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:02,933 INFO L495 AbstractCegarLoop]: Abstraction has 55492 states and 65725 transitions. [2022-07-22 12:31:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 55492 states and 65725 transitions. [2022-07-22 12:31:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-22 12:31:02,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:02,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:02,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:31:02,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:02,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash 336538634, now seen corresponding path program 1 times [2022-07-22 12:31:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:02,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23093955] [2022-07-22 12:31:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 93 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:31:03,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:03,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23093955] [2022-07-22 12:31:03,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23093955] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:31:03,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087551716] [2022-07-22 12:31:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:03,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:31:03,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:31:03,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:31:03,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:31:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:03,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:31:03,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:31:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 12:31:03,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:31:03,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087551716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:03,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:31:03,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-22 12:31:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872427678] [2022-07-22 12:31:03,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:03,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:31:03,365 INFO L87 Difference]: Start difference. First operand 55492 states and 65725 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2022-07-22 12:31:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:06,237 INFO L93 Difference]: Finished difference Result 108618 states and 128700 transitions. [2022-07-22 12:31:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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 290 [2022-07-22 12:31:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:06,300 INFO L225 Difference]: With dead ends: 108618 [2022-07-22 12:31:06,300 INFO L226 Difference]: Without dead ends: 53915 [2022-07-22 12:31:06,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:31:06,330 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1158 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:06,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1442 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:31:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53915 states. [2022-07-22 12:31:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53915 to 53914. [2022-07-22 12:31:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53914 states, 53913 states have (on average 1.1423218889692652) internal successors, (61586), 53913 states have internal predecessors, (61586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53914 states to 53914 states and 61586 transitions. [2022-07-22 12:31:06,877 INFO L78 Accepts]: Start accepts. Automaton has 53914 states and 61586 transitions. Word has length 290 [2022-07-22 12:31:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:06,878 INFO L495 AbstractCegarLoop]: Abstraction has 53914 states and 61586 transitions. [2022-07-22 12:31:06,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2022-07-22 12:31:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 53914 states and 61586 transitions. [2022-07-22 12:31:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-07-22 12:31:06,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:06,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:06,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:31:07,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:31:07,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash -481816083, now seen corresponding path program 1 times [2022-07-22 12:31:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:07,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368080007] [2022-07-22 12:31:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-22 12:31:07,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:07,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368080007] [2022-07-22 12:31:07,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368080007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:07,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:07,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799176274] [2022-07-22 12:31:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:07,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:07,216 INFO L87 Difference]: Start difference. First operand 53914 states and 61586 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:09,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:09,912 INFO L93 Difference]: Finished difference Result 106243 states and 121493 transitions. [2022-07-22 12:31:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 340 [2022-07-22 12:31:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:09,971 INFO L225 Difference]: With dead ends: 106243 [2022-07-22 12:31:09,971 INFO L226 Difference]: Without dead ends: 53118 [2022-07-22 12:31:10,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:10,004 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1093 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:10,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 822 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:31:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-07-22 12:31:10,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 53117. [2022-07-22 12:31:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53117 states, 53116 states have (on average 1.1028127118005875) internal successors, (58577), 53116 states have internal predecessors, (58577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53117 states to 53117 states and 58577 transitions. [2022-07-22 12:31:11,029 INFO L78 Accepts]: Start accepts. Automaton has 53117 states and 58577 transitions. Word has length 340 [2022-07-22 12:31:11,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:11,030 INFO L495 AbstractCegarLoop]: Abstraction has 53117 states and 58577 transitions. [2022-07-22 12:31:11,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:11,030 INFO L276 IsEmpty]: Start isEmpty. Operand 53117 states and 58577 transitions. [2022-07-22 12:31:11,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-07-22 12:31:11,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:11,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:11,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:31:11,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:11,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:11,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1478632373, now seen corresponding path program 1 times [2022-07-22 12:31:11,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:11,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751532767] [2022-07-22 12:31:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:11,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-07-22 12:31:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:11,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751532767] [2022-07-22 12:31:11,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751532767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:11,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:11,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333434734] [2022-07-22 12:31:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:11,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:11,209 INFO L87 Difference]: Start difference. First operand 53117 states and 58577 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:13,941 INFO L93 Difference]: Finished difference Result 125926 states and 138380 transitions. [2022-07-22 12:31:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:13,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 378 [2022-07-22 12:31:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:14,020 INFO L225 Difference]: With dead ends: 125926 [2022-07-22 12:31:14,020 INFO L226 Difference]: Without dead ends: 73598 [2022-07-22 12:31:14,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:14,053 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 1059 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:14,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1317 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:31:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73598 states. [2022-07-22 12:31:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73598 to 72002. [2022-07-22 12:31:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72002 states, 72001 states have (on average 1.0851238177247537) internal successors, (78130), 72001 states have internal predecessors, (78130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72002 states to 72002 states and 78130 transitions. [2022-07-22 12:31:14,925 INFO L78 Accepts]: Start accepts. Automaton has 72002 states and 78130 transitions. Word has length 378 [2022-07-22 12:31:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:14,926 INFO L495 AbstractCegarLoop]: Abstraction has 72002 states and 78130 transitions. [2022-07-22 12:31:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 72002 states and 78130 transitions. [2022-07-22 12:31:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-07-22 12:31:14,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:14,939 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:14,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:31:14,939 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:14,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1911303454, now seen corresponding path program 1 times [2022-07-22 12:31:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:14,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228291640] [2022-07-22 12:31:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:14,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:31:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:15,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228291640] [2022-07-22 12:31:15,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228291640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:15,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:15,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862880560] [2022-07-22 12:31:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:15,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:15,089 INFO L87 Difference]: Start difference. First operand 72002 states and 78130 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:18,531 INFO L93 Difference]: Finished difference Result 160543 states and 175216 transitions. [2022-07-22 12:31:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:18,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 480 [2022-07-22 12:31:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:18,631 INFO L225 Difference]: With dead ends: 160543 [2022-07-22 12:31:18,631 INFO L226 Difference]: Without dead ends: 88543 [2022-07-22 12:31:18,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:18,756 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 728 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:18,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1977 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 12:31:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88543 states. [2022-07-22 12:31:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88543 to 86954. [2022-07-22 12:31:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86954 states, 86953 states have (on average 1.073384472071119) internal successors, (93334), 86953 states have internal predecessors, (93334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86954 states to 86954 states and 93334 transitions. [2022-07-22 12:31:19,771 INFO L78 Accepts]: Start accepts. Automaton has 86954 states and 93334 transitions. Word has length 480 [2022-07-22 12:31:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:19,771 INFO L495 AbstractCegarLoop]: Abstraction has 86954 states and 93334 transitions. [2022-07-22 12:31:19,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 86954 states and 93334 transitions. [2022-07-22 12:31:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-07-22 12:31:19,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:19,784 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:19,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:31:19,785 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:19,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1335862030, now seen corresponding path program 1 times [2022-07-22 12:31:19,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:19,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094419920] [2022-07-22 12:31:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:19,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-22 12:31:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:20,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094419920] [2022-07-22 12:31:20,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094419920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:20,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:20,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063106515] [2022-07-22 12:31:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:20,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:20,025 INFO L87 Difference]: Start difference. First operand 86954 states and 93334 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:23,001 INFO L93 Difference]: Finished difference Result 191231 states and 206463 transitions. [2022-07-22 12:31:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:23,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 489 [2022-07-22 12:31:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:23,135 INFO L225 Difference]: With dead ends: 191231 [2022-07-22 12:31:23,135 INFO L226 Difference]: Without dead ends: 105066 [2022-07-22 12:31:23,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:23,166 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 918 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:23,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 744 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:31:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105066 states. [2022-07-22 12:31:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105066 to 104265. [2022-07-22 12:31:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104265 states, 104264 states have (on average 1.0756253356863348) internal successors, (112149), 104264 states have internal predecessors, (112149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104265 states to 104265 states and 112149 transitions. [2022-07-22 12:31:24,421 INFO L78 Accepts]: Start accepts. Automaton has 104265 states and 112149 transitions. Word has length 489 [2022-07-22 12:31:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:24,422 INFO L495 AbstractCegarLoop]: Abstraction has 104265 states and 112149 transitions. [2022-07-22 12:31:24,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 104265 states and 112149 transitions. [2022-07-22 12:31:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-07-22 12:31:24,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:24,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:24,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:31:24,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1877826396, now seen corresponding path program 1 times [2022-07-22 12:31:24,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:24,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773318995] [2022-07-22 12:31:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:24,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-22 12:31:24,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:24,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773318995] [2022-07-22 12:31:24,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773318995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:24,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:24,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221733757] [2022-07-22 12:31:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:24,832 INFO L87 Difference]: Start difference. First operand 104265 states and 112149 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:28,119 INFO L93 Difference]: Finished difference Result 204561 states and 220949 transitions. [2022-07-22 12:31:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:28,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 506 [2022-07-22 12:31:28,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:28,260 INFO L225 Difference]: With dead ends: 204561 [2022-07-22 12:31:28,260 INFO L226 Difference]: Without dead ends: 113683 [2022-07-22 12:31:28,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:28,293 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1175 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:28,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 354 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:31:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113683 states. [2022-07-22 12:31:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113683 to 113683. [2022-07-22 12:31:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113683 states, 113682 states have (on average 1.0711986066395736) internal successors, (121776), 113682 states have internal predecessors, (121776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113683 states to 113683 states and 121776 transitions. [2022-07-22 12:31:29,567 INFO L78 Accepts]: Start accepts. Automaton has 113683 states and 121776 transitions. Word has length 506 [2022-07-22 12:31:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:29,567 INFO L495 AbstractCegarLoop]: Abstraction has 113683 states and 121776 transitions. [2022-07-22 12:31:29,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 113683 states and 121776 transitions. [2022-07-22 12:31:29,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2022-07-22 12:31:29,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:29,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:29,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 12:31:29,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1474042506, now seen corresponding path program 1 times [2022-07-22 12:31:29,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:29,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677285479] [2022-07-22 12:31:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:29,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 336 proven. 110 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 12:31:30,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:30,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677285479] [2022-07-22 12:31:30,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677285479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:31:30,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587603173] [2022-07-22 12:31:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:30,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:31:30,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:31:30,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:31:30,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:31:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:30,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 12:31:30,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:31:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-22 12:31:31,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:31:31,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587603173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:31,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:31:31,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-07-22 12:31:31,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072006677] [2022-07-22 12:31:31,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:31,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:31:31,091 INFO L87 Difference]: Start difference. First operand 113683 states and 121776 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:34,054 INFO L93 Difference]: Finished difference Result 217136 states and 233075 transitions. [2022-07-22 12:31:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 551 [2022-07-22 12:31:34,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:34,228 INFO L225 Difference]: With dead ends: 217136 [2022-07-22 12:31:34,228 INFO L226 Difference]: Without dead ends: 116053 [2022-07-22 12:31:34,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:31:34,260 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 546 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:34,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1087 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:31:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116053 states. [2022-07-22 12:31:35,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116053 to 114472. [2022-07-22 12:31:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114472 states, 114471 states have (on average 1.0652042875488115) internal successors, (121935), 114471 states have internal predecessors, (121935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114472 states to 114472 states and 121935 transitions. [2022-07-22 12:31:35,654 INFO L78 Accepts]: Start accepts. Automaton has 114472 states and 121935 transitions. Word has length 551 [2022-07-22 12:31:35,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:35,654 INFO L495 AbstractCegarLoop]: Abstraction has 114472 states and 121935 transitions. [2022-07-22 12:31:35,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 114472 states and 121935 transitions. [2022-07-22 12:31:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-07-22 12:31:35,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:35,667 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:35,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:31:35,884 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,SelfDestructingSolverStorable14 [2022-07-22 12:31:35,884 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2061224453, now seen corresponding path program 1 times [2022-07-22 12:31:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116949099] [2022-07-22 12:31:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:31:36,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:36,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116949099] [2022-07-22 12:31:36,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116949099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:36,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:36,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:36,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488775027] [2022-07-22 12:31:36,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:36,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:36,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:36,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:36,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:36,048 INFO L87 Difference]: Start difference. First operand 114472 states and 121935 transitions. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:39,224 INFO L93 Difference]: Finished difference Result 228158 states and 243065 transitions. [2022-07-22 12:31:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:39,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 560 [2022-07-22 12:31:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:39,370 INFO L225 Difference]: With dead ends: 228158 [2022-07-22 12:31:39,371 INFO L226 Difference]: Without dead ends: 114475 [2022-07-22 12:31:39,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:39,439 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 645 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:39,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1768 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:31:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114475 states. [2022-07-22 12:31:40,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114475 to 113681. [2022-07-22 12:31:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113681 states, 113680 states have (on average 1.0523311048557353) internal successors, (119629), 113680 states have internal predecessors, (119629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113681 states to 113681 states and 119629 transitions. [2022-07-22 12:31:40,840 INFO L78 Accepts]: Start accepts. Automaton has 113681 states and 119629 transitions. Word has length 560 [2022-07-22 12:31:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:40,848 INFO L495 AbstractCegarLoop]: Abstraction has 113681 states and 119629 transitions. [2022-07-22 12:31:40,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 113681 states and 119629 transitions. [2022-07-22 12:31:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-07-22 12:31:40,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:40,860 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:40,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 12:31:40,860 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1217855569, now seen corresponding path program 1 times [2022-07-22 12:31:40,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:40,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433916394] [2022-07-22 12:31:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-07-22 12:31:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:41,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433916394] [2022-07-22 12:31:41,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433916394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:41,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:41,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:41,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993349557] [2022-07-22 12:31:41,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:41,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:41,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:41,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:41,076 INFO L87 Difference]: Start difference. First operand 113681 states and 119629 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:44,762 INFO L93 Difference]: Finished difference Result 250204 states and 263667 transitions. [2022-07-22 12:31:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:44,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 570 [2022-07-22 12:31:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:44,937 INFO L225 Difference]: With dead ends: 250204 [2022-07-22 12:31:44,937 INFO L226 Difference]: Without dead ends: 148336 [2022-07-22 12:31:44,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:44,992 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 944 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:44,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 582 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:31:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148336 states. [2022-07-22 12:31:46,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148336 to 125492. [2022-07-22 12:31:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125492 states, 125491 states have (on average 1.049397964794288) internal successors, (131690), 125491 states have internal predecessors, (131690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125492 states to 125492 states and 131690 transitions. [2022-07-22 12:31:46,864 INFO L78 Accepts]: Start accepts. Automaton has 125492 states and 131690 transitions. Word has length 570 [2022-07-22 12:31:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:46,864 INFO L495 AbstractCegarLoop]: Abstraction has 125492 states and 131690 transitions. [2022-07-22 12:31:46,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 125492 states and 131690 transitions. [2022-07-22 12:31:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-22 12:31:46,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:46,880 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:46,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 12:31:46,881 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash -403797630, now seen corresponding path program 1 times [2022-07-22 12:31:46,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:46,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141077589] [2022-07-22 12:31:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:46,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 867 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-22 12:31:47,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:47,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141077589] [2022-07-22 12:31:47,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141077589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:47,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:47,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:47,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962110234] [2022-07-22 12:31:47,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:47,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:47,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:47,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:47,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:47,012 INFO L87 Difference]: Start difference. First operand 125492 states and 131690 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:49,917 INFO L93 Difference]: Finished difference Result 250987 states and 263387 transitions. [2022-07-22 12:31:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:49,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 593 [2022-07-22 12:31:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:50,054 INFO L225 Difference]: With dead ends: 250987 [2022-07-22 12:31:50,055 INFO L226 Difference]: Without dead ends: 126284 [2022-07-22 12:31:50,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:50,104 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 921 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:50,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1441 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:31:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126284 states. [2022-07-22 12:31:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126284 to 125487. [2022-07-22 12:31:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125487 states, 125486 states have (on average 1.04378177645315) internal successors, (130980), 125486 states have internal predecessors, (130980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125487 states to 125487 states and 130980 transitions. [2022-07-22 12:31:51,851 INFO L78 Accepts]: Start accepts. Automaton has 125487 states and 130980 transitions. Word has length 593 [2022-07-22 12:31:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:51,852 INFO L495 AbstractCegarLoop]: Abstraction has 125487 states and 130980 transitions. [2022-07-22 12:31:51,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 125487 states and 130980 transitions. [2022-07-22 12:31:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2022-07-22 12:31:51,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:51,866 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 12:31:51,866 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash 630976582, now seen corresponding path program 1 times [2022-07-22 12:31:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:51,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680556097] [2022-07-22 12:31:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 708 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-07-22 12:31:52,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:52,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680556097] [2022-07-22 12:31:52,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680556097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:52,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:52,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781934776] [2022-07-22 12:31:52,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:52,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:31:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:31:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:31:52,013 INFO L87 Difference]: Start difference. First operand 125487 states and 130980 transitions. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:57,628 INFO L93 Difference]: Finished difference Result 332990 states and 347945 transitions. [2022-07-22 12:31:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:31:57,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 602 [2022-07-22 12:31:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:58,122 INFO L225 Difference]: With dead ends: 332990 [2022-07-22 12:31:58,122 INFO L226 Difference]: Without dead ends: 207505 [2022-07-22 12:31:58,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:31:58,145 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1671 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 6542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 5597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:58,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 680 Invalid, 6542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 5597 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 12:31:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207505 states. [2022-07-22 12:32:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207505 to 205033. [2022-07-22 12:32:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205033 states, 205032 states have (on average 1.0424567872332124) internal successors, (213737), 205032 states have internal predecessors, (213737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:32:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205033 states to 205033 states and 213737 transitions. [2022-07-22 12:32:00,676 INFO L78 Accepts]: Start accepts. Automaton has 205033 states and 213737 transitions. Word has length 602 [2022-07-22 12:32:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:32:00,677 INFO L495 AbstractCegarLoop]: Abstraction has 205033 states and 213737 transitions. [2022-07-22 12:32:00,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:32:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 205033 states and 213737 transitions. [2022-07-22 12:32:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2022-07-22 12:32:00,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:32:00,693 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:32:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 12:32:00,693 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:32:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:32:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash -944167332, now seen corresponding path program 1 times [2022-07-22 12:32:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:32:00,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852066309] [2022-07-22 12:32:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:32:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:32:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:32:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-07-22 12:32:00,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:32:00,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852066309] [2022-07-22 12:32:00,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852066309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:32:00,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:32:00,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:32:00,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127735580] [2022-07-22 12:32:00,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:32:00,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:32:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:32:00,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:32:00,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:32:00,849 INFO L87 Difference]: Start difference. First operand 205033 states and 213737 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:32:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:32:04,923 INFO L93 Difference]: Finished difference Result 415591 states and 433407 transitions. [2022-07-22 12:32:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:32:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 644 [2022-07-22 12:32:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:32:05,228 INFO L225 Difference]: With dead ends: 415591 [2022-07-22 12:32:05,229 INFO L226 Difference]: Without dead ends: 226306 [2022-07-22 12:32:05,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:32:05,326 INFO L413 NwaCegarLoop]: 1754 mSDtfsCounter, 657 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:32:05,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1913 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:32:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226306 states.