./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2b92f7b268935cb0637cec19294e5d3b9c96e09bf4c6f56efedf9d49b1a49f7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:36:57,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:36:57,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:36:58,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:36:58,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:36:58,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:36:58,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:36:58,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:36:58,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:36:58,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:36:58,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:36:58,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:36:58,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:36:58,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:36:58,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:36:58,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:36:58,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:36:58,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:36:58,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:36:58,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:36:58,051 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:36:58,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:36:58,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:36:58,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:36:58,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:36:58,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:36:58,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:36:58,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:36:58,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:36:58,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:36:58,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:36:58,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:36:58,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:36:58,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:36:58,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:36:58,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:36:58,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:36:58,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:36:58,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:36:58,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:36:58,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:36:58,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:36:58,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:36:58,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:36:58,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:36:58,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:36:58,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:36:58,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:36:58,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:36:58,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:36:58,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:36:58,087 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:36:58,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:36:58,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:36:58,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:36:58,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:36:58,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:36:58,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:36:58,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:36:58,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:36:58,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:36:58,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:36:58,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:36:58,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:36:58,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:36:58,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:36:58,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:36:58,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:36:58,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:36:58,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:36:58,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:36:58,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:36:58,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:36:58,090 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:36:58,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:36:58,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:36:58,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2b92f7b268935cb0637cec19294e5d3b9c96e09bf4c6f56efedf9d49b1a49f7 [2022-07-22 20:36:58,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:36:58,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:36:58,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:36:58,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:36:58,332 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:36:58,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-22 20:36:58,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11677ed37/16a19df54a7b4532b17ee11ea78e8e58/FLAGe96dca911 [2022-07-22 20:36:58,871 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:36:58,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-22 20:36:58,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11677ed37/16a19df54a7b4532b17ee11ea78e8e58/FLAGe96dca911 [2022-07-22 20:36:59,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11677ed37/16a19df54a7b4532b17ee11ea78e8e58 [2022-07-22 20:36:59,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:36:59,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:36:59,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:36:59,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:36:59,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:36:59,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:36:59" (1/1) ... [2022-07-22 20:36:59,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b4a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:36:59, skipping insertion in model container [2022-07-22 20:36:59,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:36:59" (1/1) ... [2022-07-22 20:36:59,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:36:59,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:36:59,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c[20491,20504] [2022-07-22 20:36:59,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c[28239,28252] [2022-07-22 20:37:00,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:37:00,049 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:37:00,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c[20491,20504] [2022-07-22 20:37:00,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c[28239,28252] [2022-07-22 20:37:00,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:37:00,429 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:37:00,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00 WrapperNode [2022-07-22 20:37:00,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:37:00,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:37:00,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:37:00,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:37:00,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:00,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:00,813 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5209 [2022-07-22 20:37:00,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:37:00,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:37:00,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:37:00,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:37:00,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:00,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:00,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:00,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:01,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:01,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:01,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:01,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:37:01,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:37:01,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:37:01,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:37:01,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (1/1) ... [2022-07-22 20:37:01,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:37:01,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:37:01,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:37:01,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:37:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:37:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:37:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:37:01,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:37:01,410 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:37:01,411 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:37:04,112 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:37:04,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:37:04,123 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 20:37:04,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:37:04 BoogieIcfgContainer [2022-07-22 20:37:04,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:37:04,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:37:04,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:37:04,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:37:04,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:36:59" (1/3) ... [2022-07-22 20:37:04,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@859d690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:37:04, skipping insertion in model container [2022-07-22 20:37:04,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:37:00" (2/3) ... [2022-07-22 20:37:04,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@859d690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:37:04, skipping insertion in model container [2022-07-22 20:37:04,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:37:04" (3/3) ... [2022-07-22 20:37:04,131 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-22 20:37:04,140 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:37:04,141 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:37:04,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:37:04,202 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@1a608369, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5eeb88eb [2022-07-22 20:37:04,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:37:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 20:37:04,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:04,216 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] [2022-07-22 20:37:04,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash -949343158, now seen corresponding path program 1 times [2022-07-22 20:37:04,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:04,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76486105] [2022-07-22 20:37:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:04,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:04,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76486105] [2022-07-22 20:37:04,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76486105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:04,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:04,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:37:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629133058] [2022-07-22 20:37:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:04,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:37:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:04,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:37:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:37:04,393 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:04,456 INFO L93 Difference]: Finished difference Result 1834 states and 3468 transitions. [2022-07-22 20:37:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:37:04,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-07-22 20:37:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:04,474 INFO L225 Difference]: With dead ends: 1834 [2022-07-22 20:37:04,474 INFO L226 Difference]: Without dead ends: 880 [2022-07-22 20:37:04,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:37:04,483 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:04,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-07-22 20:37:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-07-22 20:37:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.8861047835990887) internal successors, (1656), 879 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1656 transitions. [2022-07-22 20:37:04,551 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1656 transitions. Word has length 42 [2022-07-22 20:37:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:04,552 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1656 transitions. [2022-07-22 20:37:04,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1656 transitions. [2022-07-22 20:37:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 20:37:04,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:04,556 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] [2022-07-22 20:37:04,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:37:04,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2022-07-22 20:37:04,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:04,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364850713] [2022-07-22 20:37:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:04,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:04,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:04,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364850713] [2022-07-22 20:37:04,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364850713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:04,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:04,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:37:04,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918344612] [2022-07-22 20:37:04,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:04,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:37:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:04,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:37:04,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:37:04,683 INFO L87 Difference]: Start difference. First operand 880 states and 1656 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:04,788 INFO L93 Difference]: Finished difference Result 954 states and 1771 transitions. [2022-07-22 20:37:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:37:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-07-22 20:37:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:04,792 INFO L225 Difference]: With dead ends: 954 [2022-07-22 20:37:04,792 INFO L226 Difference]: Without dead ends: 880 [2022-07-22 20:37:04,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:37:04,793 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:04,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-07-22 20:37:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-07-22 20:37:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.8291571753986333) internal successors, (1606), 879 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1606 transitions. [2022-07-22 20:37:04,807 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1606 transitions. Word has length 42 [2022-07-22 20:37:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:04,807 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1606 transitions. [2022-07-22 20:37:04,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1606 transitions. [2022-07-22 20:37:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:37:04,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:04,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:04,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:37:04,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:04,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:04,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1577081032, now seen corresponding path program 1 times [2022-07-22 20:37:04,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:04,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899131673] [2022-07-22 20:37:04,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:04,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:04,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:04,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899131673] [2022-07-22 20:37:04,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899131673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:04,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:04,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354371792] [2022-07-22 20:37:04,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:37:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:04,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:37:04,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:37:04,915 INFO L87 Difference]: Start difference. First operand 880 states and 1606 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:09,618 INFO L93 Difference]: Finished difference Result 3135 states and 5915 transitions. [2022-07-22 20:37:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 20:37:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 20:37:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:09,627 INFO L225 Difference]: With dead ends: 3135 [2022-07-22 20:37:09,628 INFO L226 Difference]: Without dead ends: 2382 [2022-07-22 20:37:09,629 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 [2022-07-22 20:37:09,630 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 2514 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:09,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 878 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 20:37:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2022-07-22 20:37:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2382. [2022-07-22 20:37:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2380 states have (on average 1.5050420168067227) internal successors, (3582), 2381 states have internal predecessors, (3582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3582 transitions. [2022-07-22 20:37:09,664 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3582 transitions. Word has length 67 [2022-07-22 20:37:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:09,665 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3582 transitions. [2022-07-22 20:37:09,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3582 transitions. [2022-07-22 20:37:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:37:09,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:09,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:37:09,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2022-07-22 20:37:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:09,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420188473] [2022-07-22 20:37:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420188473] [2022-07-22 20:37:09,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420188473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:09,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:09,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041589495] [2022-07-22 20:37:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:09,737 INFO L87 Difference]: Start difference. First operand 2382 states and 3582 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:09,764 INFO L93 Difference]: Finished difference Result 2516 states and 3794 transitions. [2022-07-22 20:37:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:09,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-22 20:37:09,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:09,772 INFO L225 Difference]: With dead ends: 2516 [2022-07-22 20:37:09,772 INFO L226 Difference]: Without dead ends: 2446 [2022-07-22 20:37:09,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:09,774 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:09,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2022-07-22 20:37:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2444. [2022-07-22 20:37:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2442 states have (on average 1.5073710073710074) internal successors, (3681), 2443 states have internal predecessors, (3681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3681 transitions. [2022-07-22 20:37:09,810 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3681 transitions. Word has length 91 [2022-07-22 20:37:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:09,811 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 3681 transitions. [2022-07-22 20:37:09,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3681 transitions. [2022-07-22 20:37:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:37:09,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:09,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:09,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:37:09,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2022-07-22 20:37:09,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:09,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346583258] [2022-07-22 20:37:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:09,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:09,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346583258] [2022-07-22 20:37:09,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346583258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:09,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:09,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:09,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614995665] [2022-07-22 20:37:09,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:09,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:09,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:09,868 INFO L87 Difference]: Start difference. First operand 2444 states and 3681 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:09,897 INFO L93 Difference]: Finished difference Result 2696 states and 4081 transitions. [2022-07-22 20:37:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:09,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-22 20:37:09,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:09,905 INFO L225 Difference]: With dead ends: 2696 [2022-07-22 20:37:09,905 INFO L226 Difference]: Without dead ends: 2564 [2022-07-22 20:37:09,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:09,907 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:09,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-07-22 20:37:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2562. [2022-07-22 20:37:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2560 states have (on average 1.5109375) internal successors, (3868), 2561 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3868 transitions. [2022-07-22 20:37:09,949 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3868 transitions. Word has length 91 [2022-07-22 20:37:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:09,950 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 3868 transitions. [2022-07-22 20:37:09,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3868 transitions. [2022-07-22 20:37:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:37:09,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:09,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:09,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:37:09,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2022-07-22 20:37:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:09,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774065021] [2022-07-22 20:37:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:10,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:10,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774065021] [2022-07-22 20:37:10,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774065021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:10,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:10,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:10,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794645639] [2022-07-22 20:37:10,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:10,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:10,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:10,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:10,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:10,020 INFO L87 Difference]: Start difference. First operand 2562 states and 3868 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:10,056 INFO L93 Difference]: Finished difference Result 3038 states and 4622 transitions. [2022-07-22 20:37:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-22 20:37:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:10,066 INFO L225 Difference]: With dead ends: 3038 [2022-07-22 20:37:10,066 INFO L226 Difference]: Without dead ends: 2788 [2022-07-22 20:37:10,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:10,068 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:10,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2022-07-22 20:37:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2786. [2022-07-22 20:37:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2784 states have (on average 1.5158045977011494) internal successors, (4220), 2785 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4220 transitions. [2022-07-22 20:37:10,137 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4220 transitions. Word has length 91 [2022-07-22 20:37:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:10,137 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 4220 transitions. [2022-07-22 20:37:10,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4220 transitions. [2022-07-22 20:37:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:37:10,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:10,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:10,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:37:10,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:10,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:10,142 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2022-07-22 20:37:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:10,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678307720] [2022-07-22 20:37:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:10,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:10,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678307720] [2022-07-22 20:37:10,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678307720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:10,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:10,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859332440] [2022-07-22 20:37:10,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:10,212 INFO L87 Difference]: Start difference. First operand 2786 states and 4220 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:10,279 INFO L93 Difference]: Finished difference Result 3686 states and 5638 transitions. [2022-07-22 20:37:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:10,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-22 20:37:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:10,288 INFO L225 Difference]: With dead ends: 3686 [2022-07-22 20:37:10,288 INFO L226 Difference]: Without dead ends: 3212 [2022-07-22 20:37:10,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:10,291 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:10,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2022-07-22 20:37:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3210. [2022-07-22 20:37:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3208 states have (on average 1.5211970074812968) internal successors, (4880), 3209 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4880 transitions. [2022-07-22 20:37:10,351 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4880 transitions. Word has length 91 [2022-07-22 20:37:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:10,352 INFO L495 AbstractCegarLoop]: Abstraction has 3210 states and 4880 transitions. [2022-07-22 20:37:10,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4880 transitions. [2022-07-22 20:37:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:37:10,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:10,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:10,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:37:10,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2022-07-22 20:37:10,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:10,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233462890] [2022-07-22 20:37:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233462890] [2022-07-22 20:37:10,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233462890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:10,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:10,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:10,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818864872] [2022-07-22 20:37:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:10,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:10,407 INFO L87 Difference]: Start difference. First operand 3210 states and 4880 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:10,471 INFO L93 Difference]: Finished difference Result 4910 states and 7538 transitions. [2022-07-22 20:37:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:10,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-22 20:37:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:10,483 INFO L225 Difference]: With dead ends: 4910 [2022-07-22 20:37:10,483 INFO L226 Difference]: Without dead ends: 4012 [2022-07-22 20:37:10,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:10,486 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:10,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2022-07-22 20:37:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 4010. [2022-07-22 20:37:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4008 states have (on average 1.5249500998003993) internal successors, (6112), 4009 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 6112 transitions. [2022-07-22 20:37:10,589 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 6112 transitions. Word has length 91 [2022-07-22 20:37:10,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:10,589 INFO L495 AbstractCegarLoop]: Abstraction has 4010 states and 6112 transitions. [2022-07-22 20:37:10,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 6112 transitions. [2022-07-22 20:37:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:37:10,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:10,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:10,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:37:10,593 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2022-07-22 20:37:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:10,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918922967] [2022-07-22 20:37:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:10,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918922967] [2022-07-22 20:37:10,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918922967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:10,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:10,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:37:10,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270886711] [2022-07-22 20:37:10,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:10,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:37:10,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:37:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:37:10,676 INFO L87 Difference]: Start difference. First operand 4010 states and 6112 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:11,889 INFO L93 Difference]: Finished difference Result 27782 states and 43086 transitions. [2022-07-22 20:37:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:37:11,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-22 20:37:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:11,972 INFO L225 Difference]: With dead ends: 27782 [2022-07-22 20:37:11,987 INFO L226 Difference]: Without dead ends: 26084 [2022-07-22 20:37:11,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:37:11,998 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:11,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:37:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26084 states. [2022-07-22 20:37:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26084 to 5706. [2022-07-22 20:37:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 5704 states have (on average 1.523141654978962) internal successors, (8688), 5705 states have internal predecessors, (8688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 8688 transitions. [2022-07-22 20:37:12,468 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 8688 transitions. Word has length 91 [2022-07-22 20:37:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:12,468 INFO L495 AbstractCegarLoop]: Abstraction has 5706 states and 8688 transitions. [2022-07-22 20:37:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 8688 transitions. [2022-07-22 20:37:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:37:12,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:12,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:12,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:37:12,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2022-07-22 20:37:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:12,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760580664] [2022-07-22 20:37:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:12,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:12,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760580664] [2022-07-22 20:37:12,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760580664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:12,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:12,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837738880] [2022-07-22 20:37:12,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:12,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:12,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:12,520 INFO L87 Difference]: Start difference. First operand 5706 states and 8688 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:12,953 INFO L93 Difference]: Finished difference Result 12142 states and 18514 transitions. [2022-07-22 20:37:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-22 20:37:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:12,967 INFO L225 Difference]: With dead ends: 12142 [2022-07-22 20:37:12,967 INFO L226 Difference]: Without dead ends: 8748 [2022-07-22 20:37:12,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:12,972 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:12,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8748 states. [2022-07-22 20:37:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8748 to 8682. [2022-07-22 20:37:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8682 states, 8680 states have (on average 1.5059907834101383) internal successors, (13072), 8681 states have internal predecessors, (13072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 13072 transitions. [2022-07-22 20:37:13,409 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 13072 transitions. Word has length 93 [2022-07-22 20:37:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:13,409 INFO L495 AbstractCegarLoop]: Abstraction has 8682 states and 13072 transitions. [2022-07-22 20:37:13,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 13072 transitions. [2022-07-22 20:37:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:37:13,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:13,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:13,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:37:13,411 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:13,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2022-07-22 20:37:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:13,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401646175] [2022-07-22 20:37:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:13,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401646175] [2022-07-22 20:37:13,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401646175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:13,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:13,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:37:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64161514] [2022-07-22 20:37:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:13,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:37:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:37:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:37:13,630 INFO L87 Difference]: Start difference. First operand 8682 states and 13072 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:14,320 INFO L93 Difference]: Finished difference Result 15054 states and 22674 transitions. [2022-07-22 20:37:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:37:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-22 20:37:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:14,338 INFO L225 Difference]: With dead ends: 15054 [2022-07-22 20:37:14,338 INFO L226 Difference]: Without dead ends: 8684 [2022-07-22 20:37:14,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:37:14,350 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 4941 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:14,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4941 Valid, 2298 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:37:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8684 states. [2022-07-22 20:37:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8684 to 8682. [2022-07-22 20:37:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8682 states, 8680 states have (on average 1.4986175115207374) internal successors, (13008), 8681 states have internal predecessors, (13008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 13008 transitions. [2022-07-22 20:37:14,794 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 13008 transitions. Word has length 93 [2022-07-22 20:37:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:14,795 INFO L495 AbstractCegarLoop]: Abstraction has 8682 states and 13008 transitions. [2022-07-22 20:37:14,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 13008 transitions. [2022-07-22 20:37:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:37:14,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:14,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:14,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:37:14,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:14,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2022-07-22 20:37:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:14,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274904044] [2022-07-22 20:37:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:14,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:14,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:14,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274904044] [2022-07-22 20:37:14,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274904044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:14,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:14,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:14,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880377684] [2022-07-22 20:37:14,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:14,885 INFO L87 Difference]: Start difference. First operand 8682 states and 13008 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:15,670 INFO L93 Difference]: Finished difference Result 20654 states and 30802 transitions. [2022-07-22 20:37:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-22 20:37:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:15,695 INFO L225 Difference]: With dead ends: 20654 [2022-07-22 20:37:15,696 INFO L226 Difference]: Without dead ends: 14284 [2022-07-22 20:37:15,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:15,705 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:15,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14284 states. [2022-07-22 20:37:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14284 to 14282. [2022-07-22 20:37:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14282 states, 14280 states have (on average 1.4801120448179272) internal successors, (21136), 14281 states have internal predecessors, (21136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:16,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14282 states to 14282 states and 21136 transitions. [2022-07-22 20:37:16,656 INFO L78 Accepts]: Start accepts. Automaton has 14282 states and 21136 transitions. Word has length 93 [2022-07-22 20:37:16,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:16,656 INFO L495 AbstractCegarLoop]: Abstraction has 14282 states and 21136 transitions. [2022-07-22 20:37:16,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:16,657 INFO L276 IsEmpty]: Start isEmpty. Operand 14282 states and 21136 transitions. [2022-07-22 20:37:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 20:37:16,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:16,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:16,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:37:16,658 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2022-07-22 20:37:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:16,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681934490] [2022-07-22 20:37:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:16,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:16,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:16,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681934490] [2022-07-22 20:37:16,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681934490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:16,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:16,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:37:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74875745] [2022-07-22 20:37:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:16,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:37:16,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:37:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:37:16,734 INFO L87 Difference]: Start difference. First operand 14282 states and 21136 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:18,123 INFO L93 Difference]: Finished difference Result 23152 states and 34048 transitions. [2022-07-22 20:37:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:37:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-22 20:37:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:18,168 INFO L225 Difference]: With dead ends: 23152 [2022-07-22 20:37:18,168 INFO L226 Difference]: Without dead ends: 23150 [2022-07-22 20:37:18,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:37:18,176 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:18,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23150 states. [2022-07-22 20:37:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23150 to 14666. [2022-07-22 20:37:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14666 states, 14664 states have (on average 1.4631751227495908) internal successors, (21456), 14665 states have internal predecessors, (21456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14666 states to 14666 states and 21456 transitions. [2022-07-22 20:37:19,135 INFO L78 Accepts]: Start accepts. Automaton has 14666 states and 21456 transitions. Word has length 94 [2022-07-22 20:37:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:19,135 INFO L495 AbstractCegarLoop]: Abstraction has 14666 states and 21456 transitions. [2022-07-22 20:37:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 14666 states and 21456 transitions. [2022-07-22 20:37:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 20:37:19,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:19,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:37:19,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:37:19,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2022-07-22 20:37:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:19,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786650860] [2022-07-22 20:37:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:19,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:37:19,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:19,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786650860] [2022-07-22 20:37:19,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786650860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:19,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:19,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:37:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693570054] [2022-07-22 20:37:19,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:37:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:37:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:19,163 INFO L87 Difference]: Start difference. First operand 14666 states and 21456 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:20,493 INFO L93 Difference]: Finished difference Result 27217 states and 39894 transitions. [2022-07-22 20:37:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:37:20,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-07-22 20:37:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:20,522 INFO L225 Difference]: With dead ends: 27217 [2022-07-22 20:37:20,522 INFO L226 Difference]: Without dead ends: 20430 [2022-07-22 20:37:20,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:37:20,533 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:20,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:37:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2022-07-22 20:37:21,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 20428. [2022-07-22 20:37:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20428 states, 20426 states have (on average 1.454714579457554) internal successors, (29714), 20427 states have internal predecessors, (29714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20428 states to 20428 states and 29714 transitions. [2022-07-22 20:37:21,927 INFO L78 Accepts]: Start accepts. Automaton has 20428 states and 29714 transitions. Word has length 95 [2022-07-22 20:37:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:21,927 INFO L495 AbstractCegarLoop]: Abstraction has 20428 states and 29714 transitions. [2022-07-22 20:37:21,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 20428 states and 29714 transitions. [2022-07-22 20:37:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 20:37:21,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:21,935 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:37:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:37:21,935 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2022-07-22 20:37:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:21,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829461188] [2022-07-22 20:37:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 20:37:22,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:22,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829461188] [2022-07-22 20:37:22,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829461188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:22,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:22,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:37:22,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612501041] [2022-07-22 20:37:22,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:22,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:37:22,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:22,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:37:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:37:22,009 INFO L87 Difference]: Start difference. First operand 20428 states and 29714 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:31,618 INFO L93 Difference]: Finished difference Result 150748 states and 218330 transitions. [2022-07-22 20:37:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:37:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-07-22 20:37:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:31,891 INFO L225 Difference]: With dead ends: 150748 [2022-07-22 20:37:31,891 INFO L226 Difference]: Without dead ends: 132634 [2022-07-22 20:37:31,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:37:31,930 INFO L413 NwaCegarLoop]: 1708 mSDtfsCounter, 10875 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10875 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:31,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10875 Valid, 4157 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:37:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132634 states. [2022-07-22 20:37:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132634 to 38540. [2022-07-22 20:37:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38540 states, 38538 states have (on average 1.4469354922414241) internal successors, (55762), 38539 states have internal predecessors, (55762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38540 states to 38540 states and 55762 transitions. [2022-07-22 20:37:35,928 INFO L78 Accepts]: Start accepts. Automaton has 38540 states and 55762 transitions. Word has length 130 [2022-07-22 20:37:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:35,928 INFO L495 AbstractCegarLoop]: Abstraction has 38540 states and 55762 transitions. [2022-07-22 20:37:35,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 38540 states and 55762 transitions. [2022-07-22 20:37:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 20:37:35,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:35,937 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:37:35,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:37:35,937 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2022-07-22 20:37:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:35,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803440288] [2022-07-22 20:37:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:37:36,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:36,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803440288] [2022-07-22 20:37:36,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803440288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:36,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:36,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:37:36,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613971456] [2022-07-22 20:37:36,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:36,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:37:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:37:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:37:36,015 INFO L87 Difference]: Start difference. First operand 38540 states and 55762 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:37:48,100 INFO L93 Difference]: Finished difference Result 168860 states and 244378 transitions. [2022-07-22 20:37:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:37:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-07-22 20:37:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:37:48,376 INFO L225 Difference]: With dead ends: 168860 [2022-07-22 20:37:48,377 INFO L226 Difference]: Without dead ends: 150746 [2022-07-22 20:37:48,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:37:48,430 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 10612 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10612 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:37:48,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10612 Valid, 4214 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:37:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150746 states. [2022-07-22 20:37:54,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150746 to 65740. [2022-07-22 20:37:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65740 states, 65738 states have (on average 1.4401715902522134) internal successors, (94674), 65739 states have internal predecessors, (94674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65740 states to 65740 states and 94674 transitions. [2022-07-22 20:37:54,860 INFO L78 Accepts]: Start accepts. Automaton has 65740 states and 94674 transitions. Word has length 130 [2022-07-22 20:37:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:37:54,868 INFO L495 AbstractCegarLoop]: Abstraction has 65740 states and 94674 transitions. [2022-07-22 20:37:54,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:37:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 65740 states and 94674 transitions. [2022-07-22 20:37:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 20:37:54,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:37:54,888 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:37:54,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:37:54,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:37:54,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:37:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash 565410506, now seen corresponding path program 1 times [2022-07-22 20:37:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:37:54,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110172958] [2022-07-22 20:37:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:37:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:37:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:37:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 20:37:54,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:37:54,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110172958] [2022-07-22 20:37:54,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110172958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:37:54,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:37:54,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:37:54,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333175511] [2022-07-22 20:37:54,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:37:54,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:37:54,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:37:54,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:37:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:37:54,963 INFO L87 Difference]: Start difference. First operand 65740 states and 94674 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)