./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/Problem19_label05.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 a20fcf67e316ae96012e970303fc3aa8c33655b7999bbea9b11e7ea58007a568 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 00:27:48,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 00:27:48,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 00:27:48,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 00:27:48,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 00:27:48,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 00:27:48,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 00:27:48,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 00:27:48,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 00:27:48,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 00:27:48,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 00:27:48,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 00:27:48,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 00:27:48,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 00:27:48,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 00:27:48,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 00:27:48,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 00:27:48,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 00:27:48,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 00:27:48,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 00:27:48,911 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 00:27:48,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 00:27:48,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 00:27:48,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 00:27:48,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 00:27:48,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 00:27:48,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 00:27:48,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 00:27:48,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 00:27:48,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 00:27:48,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 00:27:48,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 00:27:48,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 00:27:48,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 00:27:48,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 00:27:48,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 00:27:48,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 00:27:48,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 00:27:48,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 00:27:48,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 00:27:48,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 00:27:48,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 00:27:48,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 00:27:48,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 00:27:48,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 00:27:48,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 00:27:48,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 00:27:48,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 00:27:48,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 00:27:48,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 00:27:48,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 00:27:48,978 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 00:27:48,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 00:27:48,979 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 00:27:48,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 00:27:48,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 00:27:48,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 00:27:48,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 00:27:48,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 00:27:48,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 00:27:48,980 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 00:27:48,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 00:27:48,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 00:27:48,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 00:27:48,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 00:27:48,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 00:27:48,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 00:27:48,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:27:48,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 00:27:48,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 00:27:48,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 00:27:48,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 00:27:48,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 00:27:48,983 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 00:27:48,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 00:27:48,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 00:27:48,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20fcf67e316ae96012e970303fc3aa8c33655b7999bbea9b11e7ea58007a568 [2022-07-21 00:27:49,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 00:27:49,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 00:27:49,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 00:27:49,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 00:27:49,327 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 00:27:49,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label05.c [2022-07-21 00:27:49,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8684c0e5/5a8c3f2aa68e45819b4ae914f08c1181/FLAG43fee0c79 [2022-07-21 00:27:50,113 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 00:27:50,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label05.c [2022-07-21 00:27:50,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8684c0e5/5a8c3f2aa68e45819b4ae914f08c1181/FLAG43fee0c79 [2022-07-21 00:27:50,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8684c0e5/5a8c3f2aa68e45819b4ae914f08c1181 [2022-07-21 00:27:50,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 00:27:50,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 00:27:50,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 00:27:50,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 00:27:50,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 00:27:50,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:27:50" (1/1) ... [2022-07-21 00:27:50,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63696cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:50, skipping insertion in model container [2022-07-21 00:27:50,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:27:50" (1/1) ... [2022-07-21 00:27:50,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 00:27:50,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 00:27:50,685 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/Problem19_label05.c[7789,7802] [2022-07-21 00:27:51,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:27:51,870 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 00:27:51,904 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/Problem19_label05.c[7789,7802] [2022-07-21 00:27:52,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:27:52,847 INFO L208 MainTranslator]: Completed translation [2022-07-21 00:27:52,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52 WrapperNode [2022-07-21 00:27:52,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 00:27:52,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 00:27:52,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 00:27:52,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 00:27:52,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:52,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:53,608 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-21 00:27:53,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 00:27:53,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 00:27:53,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 00:27:53,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 00:27:53,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:53,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:53,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:53,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:54,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:54,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:54,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:54,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 00:27:54,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 00:27:54,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 00:27:54,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 00:27:54,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (1/1) ... [2022-07-21 00:27:54,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:27:54,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:27:54,676 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) [2022-07-21 00:27:54,692 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 [2022-07-21 00:27:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 00:27:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 00:27:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 00:27:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 00:27:54,800 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 00:27:54,802 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 00:28:01,438 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 00:28:01,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 00:28:01,464 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 00:28:01,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:28:01 BoogieIcfgContainer [2022-07-21 00:28:01,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 00:28:01,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 00:28:01,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 00:28:01,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 00:28:01,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:27:50" (1/3) ... [2022-07-21 00:28:01,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236c3855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:28:01, skipping insertion in model container [2022-07-21 00:28:01,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:27:52" (2/3) ... [2022-07-21 00:28:01,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236c3855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:28:01, skipping insertion in model container [2022-07-21 00:28:01,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:28:01" (3/3) ... [2022-07-21 00:28:01,476 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label05.c [2022-07-21 00:28:01,487 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 00:28:01,488 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 00:28:01,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 00:28:01,576 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@40d07be7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6017e3d7 [2022-07-21 00:28:01,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 00:28:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 00:28:01,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:01,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:28:01,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash -634083006, now seen corresponding path program 1 times [2022-07-21 00:28:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:01,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392963938] [2022-07-21 00:28:01,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:28:01,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:01,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392963938] [2022-07-21 00:28:01,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392963938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:01,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:28:01,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:28:01,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018297241] [2022-07-21 00:28:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:01,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:28:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:28:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:28:01,980 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:08,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:28:08,971 INFO L93 Difference]: Finished difference Result 4957 states and 9398 transitions. [2022-07-21 00:28:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:28:08,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-21 00:28:08,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:28:09,007 INFO L225 Difference]: With dead ends: 4957 [2022-07-21 00:28:09,007 INFO L226 Difference]: Without dead ends: 3129 [2022-07-21 00:28:09,017 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 [2022-07-21 00:28:09,022 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1566 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 1517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-21 00:28:09,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 1595 Invalid, 5861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1517 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-21 00:28:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-07-21 00:28:09,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3108. [2022-07-21 00:28:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 1.6012230447376892) internal successors, (4975), 3107 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4975 transitions. [2022-07-21 00:28:09,145 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4975 transitions. Word has length 60 [2022-07-21 00:28:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:28:09,146 INFO L495 AbstractCegarLoop]: Abstraction has 3108 states and 4975 transitions. [2022-07-21 00:28:09,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4975 transitions. [2022-07-21 00:28:09,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 00:28:09,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:09,150 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, 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] [2022-07-21 00:28:09,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 00:28:09,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash 904206152, now seen corresponding path program 1 times [2022-07-21 00:28:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:09,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165394038] [2022-07-21 00:28:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:09,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:28:09,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:09,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165394038] [2022-07-21 00:28:09,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165394038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:09,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:28:09,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:28:09,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630297595] [2022-07-21 00:28:09,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:09,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:28:09,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:09,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:28:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:28:09,327 INFO L87 Difference]: Start difference. First operand 3108 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:28:18,654 INFO L93 Difference]: Finished difference Result 10359 states and 16187 transitions. [2022-07-21 00:28:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:28:18,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-07-21 00:28:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:28:18,685 INFO L225 Difference]: With dead ends: 10359 [2022-07-21 00:28:18,685 INFO L226 Difference]: Without dead ends: 7253 [2022-07-21 00:28:18,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:28:18,691 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 4319 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4319 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 11004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-07-21 00:28:18,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4319 Valid, 1294 Invalid, 11004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1500 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-07-21 00:28:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2022-07-21 00:28:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 7249. [2022-07-21 00:28:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7248 states have (on average 1.4501931567328918) internal successors, (10511), 7248 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10511 transitions. [2022-07-21 00:28:18,838 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10511 transitions. Word has length 127 [2022-07-21 00:28:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:28:18,838 INFO L495 AbstractCegarLoop]: Abstraction has 7249 states and 10511 transitions. [2022-07-21 00:28:18,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10511 transitions. [2022-07-21 00:28:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-07-21 00:28:18,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:18,845 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:28:18,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 00:28:18,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:18,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1081749281, now seen corresponding path program 1 times [2022-07-21 00:28:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:18,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995690335] [2022-07-21 00:28:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-21 00:28:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:19,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995690335] [2022-07-21 00:28:19,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995690335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:19,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:28:19,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:28:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286830288] [2022-07-21 00:28:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:19,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:28:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:28:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:28:19,225 INFO L87 Difference]: Start difference. First operand 7249 states and 10511 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:28:28,374 INFO L93 Difference]: Finished difference Result 17269 states and 24865 transitions. [2022-07-21 00:28:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:28:28,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-07-21 00:28:28,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:28:28,413 INFO L225 Difference]: With dead ends: 17269 [2022-07-21 00:28:28,413 INFO L226 Difference]: Without dead ends: 11387 [2022-07-21 00:28:28,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:28:28,426 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-21 00:28:28,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2157 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-07-21 00:28:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11387 states. [2022-07-21 00:28:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 11367. [2022-07-21 00:28:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.328523667077248) internal successors, (15100), 11366 states have internal predecessors, (15100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15100 transitions. [2022-07-21 00:28:28,662 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15100 transitions. Word has length 344 [2022-07-21 00:28:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:28:28,664 INFO L495 AbstractCegarLoop]: Abstraction has 11367 states and 15100 transitions. [2022-07-21 00:28:28,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15100 transitions. [2022-07-21 00:28:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-21 00:28:28,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:28,672 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:28:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 00:28:28,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:28,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:28,674 INFO L85 PathProgramCache]: Analyzing trace with hash 343245125, now seen corresponding path program 1 times [2022-07-21 00:28:28,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:28,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289924702] [2022-07-21 00:28:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 00:28:28,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289924702] [2022-07-21 00:28:28,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289924702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:28,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:28:28,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:28:28,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858115040] [2022-07-21 00:28:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:28:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:28,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:28:28,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:28:28,937 INFO L87 Difference]: Start difference. First operand 11367 states and 15100 transitions. Second operand has 4 states, 4 states have (on average 85.25) 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) [2022-07-21 00:28:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:28:35,430 INFO L93 Difference]: Finished difference Result 20033 states and 27481 transitions. [2022-07-21 00:28:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:28:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) 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 372 [2022-07-21 00:28:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:28:35,461 INFO L225 Difference]: With dead ends: 20033 [2022-07-21 00:28:35,461 INFO L226 Difference]: Without dead ends: 11367 [2022-07-21 00:28:35,471 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 [2022-07-21 00:28:35,472 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 7333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:28:35,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2117 Invalid, 7333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-21 00:28:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2022-07-21 00:28:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11367. [2022-07-21 00:28:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.327379904979764) internal successors, (15087), 11366 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15087 transitions. [2022-07-21 00:28:35,642 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15087 transitions. Word has length 372 [2022-07-21 00:28:35,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:28:35,642 INFO L495 AbstractCegarLoop]: Abstraction has 11367 states and 15087 transitions. [2022-07-21 00:28:35,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) 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) [2022-07-21 00:28:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15087 transitions. [2022-07-21 00:28:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2022-07-21 00:28:35,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:35,655 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:28:35,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 00:28:35,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:35,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:35,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1543580672, now seen corresponding path program 1 times [2022-07-21 00:28:35,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:35,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733955162] [2022-07-21 00:28:35,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:35,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-21 00:28:35,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:35,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733955162] [2022-07-21 00:28:35,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733955162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:35,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:28:35,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:28:35,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328010797] [2022-07-21 00:28:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:35,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:28:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:28:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:28:35,980 INFO L87 Difference]: Start difference. First operand 11367 states and 15087 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:28:41,467 INFO L93 Difference]: Finished difference Result 28418 states and 39498 transitions. [2022-07-21 00:28:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:28:41,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 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 616 [2022-07-21 00:28:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:28:41,505 INFO L225 Difference]: With dead ends: 28418 [2022-07-21 00:28:41,505 INFO L226 Difference]: Without dead ends: 19783 [2022-07-21 00:28:41,518 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 [2022-07-21 00:28:41,519 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 1356 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 00:28:41,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1610 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 00:28:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2022-07-21 00:28:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 19765. [2022-07-21 00:28:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19765 states, 19764 states have (on average 1.2450414895770088) internal successors, (24607), 19764 states have internal predecessors, (24607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19765 states to 19765 states and 24607 transitions. [2022-07-21 00:28:41,764 INFO L78 Accepts]: Start accepts. Automaton has 19765 states and 24607 transitions. Word has length 616 [2022-07-21 00:28:41,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:28:41,765 INFO L495 AbstractCegarLoop]: Abstraction has 19765 states and 24607 transitions. [2022-07-21 00:28:41,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 19765 states and 24607 transitions. [2022-07-21 00:28:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2022-07-21 00:28:41,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:41,795 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:28:41,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 00:28:41,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:41,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2128094785, now seen corresponding path program 1 times [2022-07-21 00:28:41,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:41,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584597920] [2022-07-21 00:28:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 00:28:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584597920] [2022-07-21 00:28:42,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584597920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:42,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:28:42,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:28:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281676397] [2022-07-21 00:28:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:42,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:28:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:28:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:28:42,109 INFO L87 Difference]: Start difference. First operand 19765 states and 24607 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:28:47,481 INFO L93 Difference]: Finished difference Result 42284 states and 53767 transitions. [2022-07-21 00:28:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:28:47,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 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 621 [2022-07-21 00:28:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:28:47,529 INFO L225 Difference]: With dead ends: 42284 [2022-07-21 00:28:47,530 INFO L226 Difference]: Without dead ends: 25251 [2022-07-21 00:28:47,547 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 [2022-07-21 00:28:47,548 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1387 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-21 00:28:47,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 757 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2123 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-21 00:28:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25251 states. [2022-07-21 00:28:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25251 to 25235. [2022-07-21 00:28:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25235 states, 25234 states have (on average 1.230958230958231) internal successors, (31062), 25234 states have internal predecessors, (31062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25235 states to 25235 states and 31062 transitions. [2022-07-21 00:28:47,847 INFO L78 Accepts]: Start accepts. Automaton has 25235 states and 31062 transitions. Word has length 621 [2022-07-21 00:28:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:28:47,848 INFO L495 AbstractCegarLoop]: Abstraction has 25235 states and 31062 transitions. [2022-07-21 00:28:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 25235 states and 31062 transitions. [2022-07-21 00:28:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2022-07-21 00:28:47,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:47,859 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:28:47,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 00:28:47,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash 678218988, now seen corresponding path program 1 times [2022-07-21 00:28:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:47,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40159444] [2022-07-21 00:28:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 00:28:48,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:48,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40159444] [2022-07-21 00:28:48,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40159444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:48,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:28:48,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:28:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714219363] [2022-07-21 00:28:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:48,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:28:48,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:28:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:28:48,133 INFO L87 Difference]: Start difference. First operand 25235 states and 31062 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:28:54,399 INFO L93 Difference]: Finished difference Result 68421 states and 85650 transitions. [2022-07-21 00:28:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:28:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 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 624 [2022-07-21 00:28:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:28:54,467 INFO L225 Difference]: With dead ends: 68421 [2022-07-21 00:28:54,467 INFO L226 Difference]: Without dead ends: 45918 [2022-07-21 00:28:54,494 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 [2022-07-21 00:28:54,495 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 2112 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-21 00:28:54,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 985 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5114 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-21 00:28:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45918 states. [2022-07-21 00:28:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45918 to 44549. [2022-07-21 00:28:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44549 states, 44548 states have (on average 1.2146673251324414) internal successors, (54111), 44548 states have internal predecessors, (54111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44549 states to 44549 states and 54111 transitions. [2022-07-21 00:28:55,009 INFO L78 Accepts]: Start accepts. Automaton has 44549 states and 54111 transitions. Word has length 624 [2022-07-21 00:28:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:28:55,011 INFO L495 AbstractCegarLoop]: Abstraction has 44549 states and 54111 transitions. [2022-07-21 00:28:55,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 2 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:28:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 44549 states and 54111 transitions. [2022-07-21 00:28:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2022-07-21 00:28:55,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:28:55,018 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:28:55,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 00:28:55,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:28:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:28:55,019 INFO L85 PathProgramCache]: Analyzing trace with hash -305048529, now seen corresponding path program 1 times [2022-07-21 00:28:55,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:28:55,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299059996] [2022-07-21 00:28:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:28:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 115 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:28:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:28:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299059996] [2022-07-21 00:28:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299059996] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:28:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523935733] [2022-07-21 00:28:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:28:55,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:28:55,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:28:55,885 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) [2022-07-21 00:28:55,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 00:28:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:28:56,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:28:56,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:28:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-21 00:28:56,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:28:56,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523935733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:28:56,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:28:56,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-21 00:28:56,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157045043] [2022-07-21 00:28:56,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:28:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:28:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:28:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:28:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 00:28:56,311 INFO L87 Difference]: Start difference. First operand 44549 states and 54111 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:29:02,097 INFO L93 Difference]: Finished difference Result 113815 states and 141094 transitions. [2022-07-21 00:29:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:29:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 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 754 [2022-07-21 00:29:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:29:02,267 INFO L225 Difference]: With dead ends: 113815 [2022-07-21 00:29:02,267 INFO L226 Difference]: Without dead ends: 71998 [2022-07-21 00:29:02,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 00:29:02,290 INFO L413 NwaCegarLoop]: 2742 mSDtfsCounter, 1462 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4055 mSolverCounterSat, 1806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1806 IncrementalHoareTripleChecker+Valid, 4055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:29:02,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2915 Invalid, 5861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1806 Valid, 4055 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 00:29:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71998 states. [2022-07-21 00:29:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71998 to 69169. [2022-07-21 00:29:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69169 states, 69168 states have (on average 1.1861988202637057) internal successors, (82047), 69168 states have internal predecessors, (82047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69169 states to 69169 states and 82047 transitions. [2022-07-21 00:29:02,979 INFO L78 Accepts]: Start accepts. Automaton has 69169 states and 82047 transitions. Word has length 754 [2022-07-21 00:29:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:29:02,981 INFO L495 AbstractCegarLoop]: Abstraction has 69169 states and 82047 transitions. [2022-07-21 00:29:02,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 69169 states and 82047 transitions. [2022-07-21 00:29:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2022-07-21 00:29:02,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:29:02,989 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:29:03,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 00:29:03,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:29:03,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:29:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:29:03,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1955291129, now seen corresponding path program 1 times [2022-07-21 00:29:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:29:03,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961796215] [2022-07-21 00:29:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:29:03,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:29:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:29:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 113 proven. 60 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-21 00:29:03,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:29:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961796215] [2022-07-21 00:29:03,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961796215] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:29:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439564090] [2022-07-21 00:29:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:29:03,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:29:03,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:29:03,946 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) [2022-07-21 00:29:03,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 00:29:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:29:04,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:29:04,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:29:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-21 00:29:04,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:29:04,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439564090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:29:04,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:29:04,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-21 00:29:04,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022347553] [2022-07-21 00:29:04,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:29:04,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:29:04,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:29:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:29:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 00:29:04,293 INFO L87 Difference]: Start difference. First operand 69169 states and 82047 transitions. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:29:10,170 INFO L93 Difference]: Finished difference Result 160228 states and 194116 transitions. [2022-07-21 00:29:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:29:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 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 853 [2022-07-21 00:29:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:29:10,405 INFO L225 Difference]: With dead ends: 160228 [2022-07-21 00:29:10,405 INFO L226 Difference]: Without dead ends: 93791 [2022-07-21 00:29:10,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 00:29:10,436 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1486 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4049 mSolverCounterSat, 1672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1672 IncrementalHoareTripleChecker+Valid, 4049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:29:10,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1750 Invalid, 5721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1672 Valid, 4049 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 00:29:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93791 states. [2022-07-21 00:29:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93791 to 69101. [2022-07-21 00:29:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69101 states, 69100 states have (on average 1.1857887120115773) internal successors, (81938), 69100 states have internal predecessors, (81938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69101 states to 69101 states and 81938 transitions. [2022-07-21 00:29:11,290 INFO L78 Accepts]: Start accepts. Automaton has 69101 states and 81938 transitions. Word has length 853 [2022-07-21 00:29:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:29:11,291 INFO L495 AbstractCegarLoop]: Abstraction has 69101 states and 81938 transitions. [2022-07-21 00:29:11,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand 69101 states and 81938 transitions. [2022-07-21 00:29:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2022-07-21 00:29:11,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:29:11,302 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:29:11,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 00:29:11,525 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,SelfDestructingSolverStorable8 [2022-07-21 00:29:11,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:29:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:29:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1069274497, now seen corresponding path program 1 times [2022-07-21 00:29:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:29:11,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459945416] [2022-07-21 00:29:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:29:11,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:29:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:29:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 492 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 00:29:12,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:29:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459945416] [2022-07-21 00:29:12,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459945416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:29:12,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:29:12,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:29:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182202688] [2022-07-21 00:29:12,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:29:12,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:29:12,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:29:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:29:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:29:12,138 INFO L87 Difference]: Start difference. First operand 69101 states and 81938 transitions. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:29:18,246 INFO L93 Difference]: Finished difference Result 175187 states and 210112 transitions. [2022-07-21 00:29:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:29:18,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 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 919 [2022-07-21 00:29:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:29:18,373 INFO L225 Difference]: With dead ends: 175187 [2022-07-21 00:29:18,373 INFO L226 Difference]: Without dead ends: 108818 [2022-07-21 00:29:18,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:29:18,402 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1552 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4250 mSolverCounterSat, 2337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 6587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2337 IncrementalHoareTripleChecker+Valid, 4250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-21 00:29:18,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 676 Invalid, 6587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2337 Valid, 4250 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-21 00:29:18,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108818 states. [2022-07-21 00:29:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108818 to 100503. [2022-07-21 00:29:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100503 states, 100502 states have (on average 1.2118266303158145) internal successors, (121791), 100502 states have internal predecessors, (121791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100503 states to 100503 states and 121791 transitions. [2022-07-21 00:29:19,600 INFO L78 Accepts]: Start accepts. Automaton has 100503 states and 121791 transitions. Word has length 919 [2022-07-21 00:29:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:29:19,600 INFO L495 AbstractCegarLoop]: Abstraction has 100503 states and 121791 transitions. [2022-07-21 00:29:19,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 100503 states and 121791 transitions. [2022-07-21 00:29:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2022-07-21 00:29:19,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:29:19,612 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:29:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 00:29:19,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:29:19,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:29:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -450489369, now seen corresponding path program 1 times [2022-07-21 00:29:19,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:29:19,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668907272] [2022-07-21 00:29:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:29:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:29:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:29:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-21 00:29:20,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:29:20,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668907272] [2022-07-21 00:29:20,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668907272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:29:20,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:29:20,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:29:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843589767] [2022-07-21 00:29:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:29:20,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:29:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:29:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:29:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:29:20,413 INFO L87 Difference]: Start difference. First operand 100503 states and 121791 transitions. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:29:25,917 INFO L93 Difference]: Finished difference Result 202378 states and 245039 transitions. [2022-07-21 00:29:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:29:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 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 950 [2022-07-21 00:29:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:29:26,043 INFO L225 Difference]: With dead ends: 202378 [2022-07-21 00:29:26,043 INFO L226 Difference]: Without dead ends: 104607 [2022-07-21 00:29:26,082 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 [2022-07-21 00:29:26,083 INFO L413 NwaCegarLoop]: 2902 mSDtfsCounter, 1508 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 1464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 5145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1464 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 00:29:26,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 3085 Invalid, 5145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1464 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-21 00:29:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104607 states. [2022-07-21 00:29:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104607 to 100499. [2022-07-21 00:29:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100499 states, 100498 states have (on average 1.1535254432924038) internal successors, (115927), 100498 states have internal predecessors, (115927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100499 states to 100499 states and 115927 transitions. [2022-07-21 00:29:27,426 INFO L78 Accepts]: Start accepts. Automaton has 100499 states and 115927 transitions. Word has length 950 [2022-07-21 00:29:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:29:27,427 INFO L495 AbstractCegarLoop]: Abstraction has 100499 states and 115927 transitions. [2022-07-21 00:29:27,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 100499 states and 115927 transitions. [2022-07-21 00:29:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2022-07-21 00:29:27,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:29:27,442 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:29:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 00:29:27,443 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:29:27,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:29:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1892601425, now seen corresponding path program 1 times [2022-07-21 00:29:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:29:27,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377115081] [2022-07-21 00:29:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:29:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:29:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:29:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-21 00:29:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:29:28,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377115081] [2022-07-21 00:29:28,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377115081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:29:28,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:29:28,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:29:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705001390] [2022-07-21 00:29:28,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:29:28,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:29:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:29:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:29:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:29:28,065 INFO L87 Difference]: Start difference. First operand 100499 states and 115927 transitions. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:29:33,842 INFO L93 Difference]: Finished difference Result 232402 states and 269161 transitions. [2022-07-21 00:29:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:29:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 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 1017 [2022-07-21 00:29:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:29:33,994 INFO L225 Difference]: With dead ends: 232402 [2022-07-21 00:29:33,994 INFO L226 Difference]: Without dead ends: 129173 [2022-07-21 00:29:34,027 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 [2022-07-21 00:29:34,027 INFO L413 NwaCegarLoop]: 2944 mSDtfsCounter, 1355 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4342 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 5106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 4342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-21 00:29:34,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 3127 Invalid, 5106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 4342 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-21 00:29:34,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129173 states. [2022-07-21 00:29:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129173 to 120960. [2022-07-21 00:29:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120960 states, 120959 states have (on average 1.135120164683901) internal successors, (137303), 120959 states have internal predecessors, (137303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120960 states to 120960 states and 137303 transitions. [2022-07-21 00:29:35,431 INFO L78 Accepts]: Start accepts. Automaton has 120960 states and 137303 transitions. Word has length 1017 [2022-07-21 00:29:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:29:35,432 INFO L495 AbstractCegarLoop]: Abstraction has 120960 states and 137303 transitions. [2022-07-21 00:29:35,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 120960 states and 137303 transitions. [2022-07-21 00:29:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2022-07-21 00:29:35,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:29:35,444 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:29:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 00:29:35,444 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:29:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:29:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash -787551050, now seen corresponding path program 1 times [2022-07-21 00:29:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:29:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031720489] [2022-07-21 00:29:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:29:35,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:29:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:29:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-21 00:29:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:29:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031720489] [2022-07-21 00:29:36,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031720489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:29:36,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:29:36,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 00:29:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403119791] [2022-07-21 00:29:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:29:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:29:36,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:29:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:29:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:29:36,112 INFO L87 Difference]: Start difference. First operand 120960 states and 137303 transitions. Second operand has 4 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:29:45,629 INFO L93 Difference]: Finished difference Result 363424 states and 421255 transitions. [2022-07-21 00:29:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:29:45,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 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 1030 [2022-07-21 00:29:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:29:45,954 INFO L225 Difference]: With dead ends: 363424 [2022-07-21 00:29:45,954 INFO L226 Difference]: Without dead ends: 245196 [2022-07-21 00:29:46,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:29:46,027 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 4968 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 6121 mSolverCounterSat, 3897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4968 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 10018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3897 IncrementalHoareTripleChecker+Valid, 6121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:29:46,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4968 Valid, 1085 Invalid, 10018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3897 Valid, 6121 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-07-21 00:29:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245196 states. [2022-07-21 00:29:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245196 to 234257. [2022-07-21 00:29:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234257 states, 234256 states have (on average 1.1277662044942285) internal successors, (264186), 234256 states have internal predecessors, (264186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234257 states to 234257 states and 264186 transitions. [2022-07-21 00:29:49,193 INFO L78 Accepts]: Start accepts. Automaton has 234257 states and 264186 transitions. Word has length 1030 [2022-07-21 00:29:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:29:49,194 INFO L495 AbstractCegarLoop]: Abstraction has 234257 states and 264186 transitions. [2022-07-21 00:29:49,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:29:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 234257 states and 264186 transitions. [2022-07-21 00:29:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2022-07-21 00:29:49,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:29:49,207 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:29:49,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 00:29:49,207 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:29:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:29:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1931592971, now seen corresponding path program 1 times [2022-07-21 00:29:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:29:49,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62356564] [2022-07-21 00:29:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:29:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:29:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:29:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 1091 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-21 00:29:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:29:49,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62356564] [2022-07-21 00:29:49,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62356564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:29:49,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:29:49,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 00:29:49,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237902289] [2022-07-21 00:29:49,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:29:49,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:29:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:29:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:29:49,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:29:49,897 INFO L87 Difference]: Start difference. First operand 234257 states and 264186 transitions. Second operand has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:30:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:30:01,577 INFO L93 Difference]: Finished difference Result 706219 states and 798785 transitions. [2022-07-21 00:30:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:30:01,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 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 1149 [2022-07-21 00:30:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:30:02,376 INFO L225 Difference]: With dead ends: 706219 [2022-07-21 00:30:02,376 INFO L226 Difference]: Without dead ends: 474694 [2022-07-21 00:30:02,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:30:02,533 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 3134 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 9173 mSolverCounterSat, 2557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3134 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 11730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2557 IncrementalHoareTripleChecker+Valid, 9173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-21 00:30:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3134 Valid, 1192 Invalid, 11730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2557 Valid, 9173 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-21 00:30:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474694 states. [2022-07-21 00:30:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474694 to 448629. [2022-07-21 00:30:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448629 states, 448628 states have (on average 1.1199969685351783) internal successors, (502462), 448628 states have internal predecessors, (502462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:30:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448629 states to 448629 states and 502462 transitions. [2022-07-21 00:30:09,015 INFO L78 Accepts]: Start accepts. Automaton has 448629 states and 502462 transitions. Word has length 1149 [2022-07-21 00:30:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:30:09,016 INFO L495 AbstractCegarLoop]: Abstraction has 448629 states and 502462 transitions. [2022-07-21 00:30:09,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:30:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 448629 states and 502462 transitions. [2022-07-21 00:30:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1156 [2022-07-21 00:30:09,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:30:09,030 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:30:09,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 00:30:09,030 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:30:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:30:09,031 INFO L85 PathProgramCache]: Analyzing trace with hash -990921961, now seen corresponding path program 1 times [2022-07-21 00:30:09,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:30:09,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682454704] [2022-07-21 00:30:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:30:09,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:30:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:30:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 778 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 00:30:09,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:30:09,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682454704] [2022-07-21 00:30:09,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682454704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:30:09,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:30:09,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:30:09,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790260650] [2022-07-21 00:30:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:30:09,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:30:09,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:30:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:30:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:30:09,996 INFO L87 Difference]: Start difference. First operand 448629 states and 502462 transitions. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:30:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:30:18,943 INFO L93 Difference]: Finished difference Result 1039327 states and 1169286 transitions. [2022-07-21 00:30:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:30:18,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 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 1155 [2022-07-21 00:30:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:30:19,974 INFO L225 Difference]: With dead ends: 1039327 [2022-07-21 00:30:19,974 INFO L226 Difference]: Without dead ends: 590699