./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa --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 005ac8ee8adf903b55f0e01ea009909c55d3e1ff8fa6b791c6d5517728f0aa56 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:00:18,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:00:18,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:00:18,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:00:18,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:00:18,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:00:18,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:00:18,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:00:18,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:00:18,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:00:18,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:00:18,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:00:18,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:00:18,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:00:18,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:00:18,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:00:18,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:00:18,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:00:18,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:00:18,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:00:18,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:00:18,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:00:18,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:00:18,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:00:18,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:00:18,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:00:18,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:00:18,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:00:18,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:00:18,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:00:18,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:00:18,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:00:18,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:00:18,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:00:18,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:00:18,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:00:18,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:00:18,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:00:18,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:00:18,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:00:18,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:00:18,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:00:18,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:00:18,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:00:18,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:00:18,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:00:18,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:00:18,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:00:18,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:00:18,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:00:18,245 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:00:18,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:00:18,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:00:18,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:00:18,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:00:18,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:00:18,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:00:18,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:00:18,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:00:18,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:00:18,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:00:18,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:00:18,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:00:18,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:00:18,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:00:18,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:00:18,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:00:18,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:00:18,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:00:18,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:00:18,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:00:18,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:00:18,248 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:00:18,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:00:18,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:00:18,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:00:18,249 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 005ac8ee8adf903b55f0e01ea009909c55d3e1ff8fa6b791c6d5517728f0aa56 [2021-12-07 01:00:18,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:00:18,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:00:18,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:00:18,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:00:18,441 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:00:18,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem05_label21.c [2021-12-07 01:00:18,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/data/a7dfcbde1/dad85357c06f48c7bfdf0ecc62193de6/FLAGb291e9a31 [2021-12-07 01:00:19,192 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:00:19,192 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/sv-benchmarks/c/eca-rers2012/Problem05_label21.c [2021-12-07 01:00:19,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/data/a7dfcbde1/dad85357c06f48c7bfdf0ecc62193de6/FLAGb291e9a31 [2021-12-07 01:00:19,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/data/a7dfcbde1/dad85357c06f48c7bfdf0ecc62193de6 [2021-12-07 01:00:19,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:00:19,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:00:19,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:00:19,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:00:19,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:00:19,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:00:19" (1/1) ... [2021-12-07 01:00:19,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcc858e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:19, skipping insertion in model container [2021-12-07 01:00:19,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:00:19" (1/1) ... [2021-12-07 01:00:19,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:00:19,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:00:21,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/sv-benchmarks/c/eca-rers2012/Problem05_label21.c[378895,378908] [2021-12-07 01:00:21,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:00:21,187 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:00:22,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/sv-benchmarks/c/eca-rers2012/Problem05_label21.c[378895,378908] [2021-12-07 01:00:22,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:00:22,069 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:00:22,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22 WrapperNode [2021-12-07 01:00:22,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:00:22,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:00:22,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:00:22,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:00:22,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,445 INFO L137 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346 [2021-12-07 01:00:22,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:00:22,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:00:22,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:00:22,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:00:22,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:00:22,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:00:22,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:00:22,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:00:22,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (1/1) ... [2021-12-07 01:00:22,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:00:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:00:22,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:00:22,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:00:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:00:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:00:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:00:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:00:22,883 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:00:22,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:00:27,060 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:00:27,080 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:00:27,080 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:00:27,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:00:27 BoogieIcfgContainer [2021-12-07 01:00:27,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:00:27,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:00:27,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:00:27,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:00:27,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:00:19" (1/3) ... [2021-12-07 01:00:27,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701aa256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:00:27, skipping insertion in model container [2021-12-07 01:00:27,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:00:22" (2/3) ... [2021-12-07 01:00:27,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701aa256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:00:27, skipping insertion in model container [2021-12-07 01:00:27,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:00:27" (3/3) ... [2021-12-07 01:00:27,089 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label21.c [2021-12-07 01:00:27,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:00:27,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:00:27,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:00:27,142 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:00:27,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:00:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1668 [2021-12-07 01:00:27,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:27,294 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:27,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:27,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1832070081, now seen corresponding path program 1 times [2021-12-07 01:00:27,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:27,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074032732] [2021-12-07 01:00:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:27,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:00:28,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:28,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074032732] [2021-12-07 01:00:28,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074032732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:28,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:28,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:00:28,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650097623] [2021-12-07 01:00:28,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:28,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:28,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:28,862 INFO L87 Difference]: Start difference. First operand has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 2 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:33,370 INFO L93 Difference]: Finished difference Result 6263 states and 11838 transitions. [2021-12-07 01:00:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:00:33,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 2 states have internal predecessors, (1667), 0 states have call successors, (0), 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 1667 [2021-12-07 01:00:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:33,410 INFO L225 Difference]: With dead ends: 6263 [2021-12-07 01:00:33,410 INFO L226 Difference]: Without dead ends: 4014 [2021-12-07 01:00:33,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:33,420 INFO L933 BasicCegarLoop]: 1397 mSDtfsCounter, 365 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 5307 mSolverCounterSat, 2416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 7723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2416 IncrementalHoareTripleChecker+Valid, 5307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:33,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1623 Invalid, 7723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2416 Valid, 5307 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-07 01:00:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2021-12-07 01:00:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 3931. [2021-12-07 01:00:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 3930 states have (on average 1.7063613231552164) internal successors, (6706), 3930 states have internal predecessors, (6706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 6706 transitions. [2021-12-07 01:00:33,547 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 6706 transitions. Word has length 1667 [2021-12-07 01:00:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:33,550 INFO L470 AbstractCegarLoop]: Abstraction has 3931 states and 6706 transitions. [2021-12-07 01:00:33,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 2 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 6706 transitions. [2021-12-07 01:00:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2021-12-07 01:00:33,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:33,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:33,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:00:33,707 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1109188687, now seen corresponding path program 1 times [2021-12-07 01:00:33,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:33,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501432958] [2021-12-07 01:00:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:33,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:00:34,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:34,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501432958] [2021-12-07 01:00:34,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501432958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:34,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:34,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:00:34,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169525011] [2021-12-07 01:00:34,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:34,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:34,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:34,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:34,411 INFO L87 Difference]: Start difference. First operand 3931 states and 6706 transitions. Second operand has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 2 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:38,394 INFO L93 Difference]: Finished difference Result 11291 states and 19411 transitions. [2021-12-07 01:00:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:00:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 2 states have internal predecessors, (1675), 0 states have call successors, (0), 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 1675 [2021-12-07 01:00:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:38,424 INFO L225 Difference]: With dead ends: 11291 [2021-12-07 01:00:38,424 INFO L226 Difference]: Without dead ends: 7362 [2021-12-07 01:00:38,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:38,429 INFO L933 BasicCegarLoop]: 1826 mSDtfsCounter, 2355 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 4839 mSolverCounterSat, 2060 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 6899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2060 IncrementalHoareTripleChecker+Valid, 4839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:38,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2355 Valid, 2022 Invalid, 6899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2060 Valid, 4839 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-07 01:00:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2021-12-07 01:00:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 7361. [2021-12-07 01:00:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7361 states, 7360 states have (on average 1.5313858695652174) internal successors, (11271), 7360 states have internal predecessors, (11271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 11271 transitions. [2021-12-07 01:00:38,549 INFO L78 Accepts]: Start accepts. Automaton has 7361 states and 11271 transitions. Word has length 1675 [2021-12-07 01:00:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:38,549 INFO L470 AbstractCegarLoop]: Abstraction has 7361 states and 11271 transitions. [2021-12-07 01:00:38,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 2 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:38,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7361 states and 11271 transitions. [2021-12-07 01:00:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1696 [2021-12-07 01:00:38,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:38,578 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:38,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:00:38,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1214313329, now seen corresponding path program 1 times [2021-12-07 01:00:38,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:38,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456654395] [2021-12-07 01:00:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:38,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:00:39,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:39,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456654395] [2021-12-07 01:00:39,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456654395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:39,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:39,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:00:39,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734527287] [2021-12-07 01:00:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:39,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:39,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:39,090 INFO L87 Difference]: Start difference. First operand 7361 states and 11271 transitions. Second operand has 3 states, 3 states have (on average 565.0) internal successors, (1695), 2 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:42,242 INFO L93 Difference]: Finished difference Result 18117 states and 27085 transitions. [2021-12-07 01:00:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:00:42,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 565.0) internal successors, (1695), 2 states have internal predecessors, (1695), 0 states have call successors, (0), 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 1695 [2021-12-07 01:00:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:42,283 INFO L225 Difference]: With dead ends: 18117 [2021-12-07 01:00:42,283 INFO L226 Difference]: Without dead ends: 10758 [2021-12-07 01:00:42,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:42,291 INFO L933 BasicCegarLoop]: 1078 mSDtfsCounter, 3171 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 1208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3171 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 5981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:42,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3171 Valid, 1164 Invalid, 5981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1208 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 01:00:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10758 states. [2021-12-07 01:00:42,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10758 to 10758. [2021-12-07 01:00:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10758 states, 10757 states have (on average 1.3355954262340801) internal successors, (14367), 10757 states have internal predecessors, (14367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 14367 transitions. [2021-12-07 01:00:42,433 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 14367 transitions. Word has length 1695 [2021-12-07 01:00:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:42,433 INFO L470 AbstractCegarLoop]: Abstraction has 10758 states and 14367 transitions. [2021-12-07 01:00:42,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 565.0) internal successors, (1695), 2 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 14367 transitions. [2021-12-07 01:00:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2021-12-07 01:00:42,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:42,462 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:42,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:00:42,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:42,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1413294122, now seen corresponding path program 1 times [2021-12-07 01:00:42,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:42,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682785388] [2021-12-07 01:00:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:42,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:00:42,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:42,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682785388] [2021-12-07 01:00:42,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682785388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:42,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:43,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:00:43,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777958083] [2021-12-07 01:00:43,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:43,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:43,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:43,005 INFO L87 Difference]: Start difference. First operand 10758 states and 14367 transitions. Second operand has 3 states, 3 states have (on average 567.6666666666666) internal successors, (1703), 2 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:47,053 INFO L93 Difference]: Finished difference Result 31738 states and 42394 transitions. [2021-12-07 01:00:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:00:47,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 567.6666666666666) internal successors, (1703), 2 states have internal predecessors, (1703), 0 states have call successors, (0), 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 1703 [2021-12-07 01:00:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:47,100 INFO L225 Difference]: With dead ends: 31738 [2021-12-07 01:00:47,101 INFO L226 Difference]: Without dead ends: 20982 [2021-12-07 01:00:47,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:47,115 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 2223 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4946 mSolverCounterSat, 2574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 7520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2574 IncrementalHoareTripleChecker+Valid, 4946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:47,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 1390 Invalid, 7520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2574 Valid, 4946 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-07 01:00:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20982 states. [2021-12-07 01:00:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20982 to 20965. [2021-12-07 01:00:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20965 states, 20964 states have (on average 1.2765216561724861) internal successors, (26761), 20964 states have internal predecessors, (26761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20965 states to 20965 states and 26761 transitions. [2021-12-07 01:00:47,381 INFO L78 Accepts]: Start accepts. Automaton has 20965 states and 26761 transitions. Word has length 1703 [2021-12-07 01:00:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:47,381 INFO L470 AbstractCegarLoop]: Abstraction has 20965 states and 26761 transitions. [2021-12-07 01:00:47,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 567.6666666666666) internal successors, (1703), 2 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 20965 states and 26761 transitions. [2021-12-07 01:00:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1777 [2021-12-07 01:00:47,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:47,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:47,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:00:47,421 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2044567217, now seen corresponding path program 1 times [2021-12-07 01:00:47,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:47,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933705726] [2021-12-07 01:00:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:47,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-07 01:00:48,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933705726] [2021-12-07 01:00:48,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933705726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:48,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:48,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:00:48,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009984066] [2021-12-07 01:00:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:48,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:48,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:48,269 INFO L87 Difference]: Start difference. First operand 20965 states and 26761 transitions. Second operand has 3 states, 3 states have (on average 556.3333333333334) internal successors, (1669), 2 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:52,173 INFO L93 Difference]: Finished difference Result 62316 states and 79527 transitions. [2021-12-07 01:00:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:00:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 556.3333333333334) internal successors, (1669), 2 states have internal predecessors, (1669), 0 states have call successors, (0), 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 1776 [2021-12-07 01:00:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:52,216 INFO L225 Difference]: With dead ends: 62316 [2021-12-07 01:00:52,217 INFO L226 Difference]: Without dead ends: 41353 [2021-12-07 01:00:52,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:52,234 INFO L933 BasicCegarLoop]: 1954 mSDtfsCounter, 208 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 5723 mSolverCounterSat, 1400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 7123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1400 IncrementalHoareTripleChecker+Valid, 5723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:52,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 2250 Invalid, 7123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1400 Valid, 5723 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-07 01:00:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41353 states. [2021-12-07 01:00:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41353 to 41345. [2021-12-07 01:00:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41345 states, 41344 states have (on average 1.1928212074303406) internal successors, (49316), 41344 states have internal predecessors, (49316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41345 states to 41345 states and 49316 transitions. [2021-12-07 01:00:52,612 INFO L78 Accepts]: Start accepts. Automaton has 41345 states and 49316 transitions. Word has length 1776 [2021-12-07 01:00:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:52,613 INFO L470 AbstractCegarLoop]: Abstraction has 41345 states and 49316 transitions. [2021-12-07 01:00:52,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 556.3333333333334) internal successors, (1669), 2 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 41345 states and 49316 transitions. [2021-12-07 01:00:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1879 [2021-12-07 01:00:52,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:52,671 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:52,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:00:52,671 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:52,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1918512, now seen corresponding path program 1 times [2021-12-07 01:00:52,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:52,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171349947] [2021-12-07 01:00:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:52,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-07 01:00:53,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:53,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171349947] [2021-12-07 01:00:53,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171349947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:53,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:53,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:00:53,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529111329] [2021-12-07 01:00:53,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:53,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:53,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:53,251 INFO L87 Difference]: Start difference. First operand 41345 states and 49316 transitions. Second operand has 3 states, 3 states have (on average 592.0) internal successors, (1776), 2 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:57,046 INFO L93 Difference]: Finished difference Result 121747 states and 145212 transitions. [2021-12-07 01:00:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:00:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 592.0) internal successors, (1776), 2 states have internal predecessors, (1776), 0 states have call successors, (0), 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 1878 [2021-12-07 01:00:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:57,128 INFO L225 Difference]: With dead ends: 121747 [2021-12-07 01:00:57,128 INFO L226 Difference]: Without dead ends: 80404 [2021-12-07 01:00:57,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:57,157 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 2449 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4487 mSolverCounterSat, 2361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2361 IncrementalHoareTripleChecker+Valid, 4487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:57,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 1804 Invalid, 6848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2361 Valid, 4487 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-07 01:00:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80404 states. [2021-12-07 01:00:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80404 to 73600. [2021-12-07 01:00:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73600 states, 73599 states have (on average 1.1479503797605946) internal successors, (84488), 73599 states have internal predecessors, (84488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73600 states to 73600 states and 84488 transitions. [2021-12-07 01:00:57,895 INFO L78 Accepts]: Start accepts. Automaton has 73600 states and 84488 transitions. Word has length 1878 [2021-12-07 01:00:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:57,896 INFO L470 AbstractCegarLoop]: Abstraction has 73600 states and 84488 transitions. [2021-12-07 01:00:57,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 592.0) internal successors, (1776), 2 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:00:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 73600 states and 84488 transitions. [2021-12-07 01:00:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1895 [2021-12-07 01:00:57,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:57,970 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:57,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:00:57,970 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash 500852841, now seen corresponding path program 1 times [2021-12-07 01:00:57,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:57,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000704175] [2021-12-07 01:00:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:57,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-12-07 01:00:58,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:58,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000704175] [2021-12-07 01:00:58,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000704175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:58,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:58,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:00:58,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229503991] [2021-12-07 01:00:58,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:58,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:00:58,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:00:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:00:58,613 INFO L87 Difference]: Start difference. First operand 73600 states and 84488 transitions. Second operand has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:02,790 INFO L93 Difference]: Finished difference Result 186261 states and 215782 transitions. [2021-12-07 01:01:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 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 1894 [2021-12-07 01:01:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:02,914 INFO L225 Difference]: With dead ends: 186261 [2021-12-07 01:01:02,914 INFO L226 Difference]: Without dead ends: 112663 [2021-12-07 01:01:02,941 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:01:02,941 INFO L933 BasicCegarLoop]: 3606 mSDtfsCounter, 2070 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 4777 mSolverCounterSat, 2201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 6978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2201 IncrementalHoareTripleChecker+Valid, 4777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:02,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2070 Valid, 3841 Invalid, 6978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2201 Valid, 4777 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-07 01:01:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112663 states. [2021-12-07 01:01:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112663 to 110957. [2021-12-07 01:01:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110957 states, 110956 states have (on average 1.1215346623886946) internal successors, (124441), 110956 states have internal predecessors, (124441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110957 states to 110957 states and 124441 transitions. [2021-12-07 01:01:03,994 INFO L78 Accepts]: Start accepts. Automaton has 110957 states and 124441 transitions. Word has length 1894 [2021-12-07 01:01:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:03,994 INFO L470 AbstractCegarLoop]: Abstraction has 110957 states and 124441 transitions. [2021-12-07 01:01:03,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 110957 states and 124441 transitions. [2021-12-07 01:01:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2024 [2021-12-07 01:01:04,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:04,080 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:04,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:01:04,080 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1429867143, now seen corresponding path program 1 times [2021-12-07 01:01:04,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:04,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197032809] [2021-12-07 01:01:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:04,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-07 01:01:04,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:04,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197032809] [2021-12-07 01:01:04,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197032809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:04,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:04,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:04,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088745708] [2021-12-07 01:01:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:04,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:04,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:04,883 INFO L87 Difference]: Start difference. First operand 110957 states and 124441 transitions. Second operand has 3 states, 3 states have (on average 629.0) internal successors, (1887), 3 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:09,710 INFO L93 Difference]: Finished difference Result 267836 states and 301561 transitions. [2021-12-07 01:01:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:09,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 629.0) internal successors, (1887), 3 states have internal predecessors, (1887), 0 states have call successors, (0), 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 2023 [2021-12-07 01:01:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:09,870 INFO L225 Difference]: With dead ends: 267836 [2021-12-07 01:01:09,870 INFO L226 Difference]: Without dead ends: 155176 [2021-12-07 01:01:09,919 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:01:09,920 INFO L933 BasicCegarLoop]: 3963 mSDtfsCounter, 1760 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 7524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:09,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 4183 Invalid, 7524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-07 01:01:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155176 states. [2021-12-07 01:01:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155176 to 155106. [2021-12-07 01:01:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155106 states, 155105 states have (on average 1.1023177847264756) internal successors, (170975), 155105 states have internal predecessors, (170975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155106 states to 155106 states and 170975 transitions. [2021-12-07 01:01:11,481 INFO L78 Accepts]: Start accepts. Automaton has 155106 states and 170975 transitions. Word has length 2023 [2021-12-07 01:01:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:11,482 INFO L470 AbstractCegarLoop]: Abstraction has 155106 states and 170975 transitions. [2021-12-07 01:01:11,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 629.0) internal successors, (1887), 3 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 155106 states and 170975 transitions. [2021-12-07 01:01:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2078 [2021-12-07 01:01:11,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:11,718 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:11,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:01:11,718 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:11,719 INFO L85 PathProgramCache]: Analyzing trace with hash -434789856, now seen corresponding path program 1 times [2021-12-07 01:01:11,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:11,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927066290] [2021-12-07 01:01:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:11,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-07 01:01:12,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927066290] [2021-12-07 01:01:12,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927066290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:12,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:12,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:12,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801365577] [2021-12-07 01:01:12,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:12,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:12,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:12,476 INFO L87 Difference]: Start difference. First operand 155106 states and 170975 transitions. Second operand has 3 states, 3 states have (on average 641.6666666666666) internal successors, (1925), 3 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:16,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:16,946 INFO L93 Difference]: Finished difference Result 367956 states and 404692 transitions. [2021-12-07 01:01:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:16,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 641.6666666666666) internal successors, (1925), 3 states have internal predecessors, (1925), 0 states have call successors, (0), 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 2077 [2021-12-07 01:01:16,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:17,149 INFO L225 Difference]: With dead ends: 367956 [2021-12-07 01:01:17,149 INFO L226 Difference]: Without dead ends: 212851 [2021-12-07 01:01:17,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:17,199 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 2117 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5083 mSolverCounterSat, 2140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 7223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2140 IncrementalHoareTripleChecker+Valid, 5083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:17,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2117 Valid, 1066 Invalid, 7223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2140 Valid, 5083 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-07 01:01:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212851 states. [2021-12-07 01:01:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212851 to 206039. [2021-12-07 01:01:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206039 states, 206038 states have (on average 1.088871955658665) internal successors, (224349), 206038 states have internal predecessors, (224349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206039 states to 206039 states and 224349 transitions. [2021-12-07 01:01:19,491 INFO L78 Accepts]: Start accepts. Automaton has 206039 states and 224349 transitions. Word has length 2077 [2021-12-07 01:01:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:19,492 INFO L470 AbstractCegarLoop]: Abstraction has 206039 states and 224349 transitions. [2021-12-07 01:01:19,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 641.6666666666666) internal successors, (1925), 3 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 206039 states and 224349 transitions. [2021-12-07 01:01:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2095 [2021-12-07 01:01:19,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:19,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:19,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:01:19,632 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash 560593379, now seen corresponding path program 1 times [2021-12-07 01:01:19,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:19,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231584537] [2021-12-07 01:01:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:19,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:20,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231584537] [2021-12-07 01:01:20,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231584537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:20,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:20,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:20,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269652280] [2021-12-07 01:01:20,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:20,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:20,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:20,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:20,525 INFO L87 Difference]: Start difference. First operand 206039 states and 224349 transitions. Second operand has 3 states, 3 states have (on average 698.0) internal successors, (2094), 3 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:25,308 INFO L93 Difference]: Finished difference Result 473222 states and 515885 transitions. [2021-12-07 01:01:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:25,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 698.0) internal successors, (2094), 3 states have internal predecessors, (2094), 0 states have call successors, (0), 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 2094 [2021-12-07 01:01:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:25,580 INFO L225 Difference]: With dead ends: 473222 [2021-12-07 01:01:25,580 INFO L226 Difference]: Without dead ends: 267184 [2021-12-07 01:01:25,648 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:01:25,649 INFO L933 BasicCegarLoop]: 3750 mSDtfsCounter, 1495 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 5631 mSolverCounterSat, 1235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 6866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1235 IncrementalHoareTripleChecker+Valid, 5631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:25,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 4007 Invalid, 6866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1235 Valid, 5631 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-07 01:01:25,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267184 states. [2021-12-07 01:01:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267184 to 262070. [2021-12-07 01:01:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262070 states, 262069 states have (on average 1.073949990269738) internal successors, (281449), 262069 states have internal predecessors, (281449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262070 states to 262070 states and 281449 transitions. [2021-12-07 01:01:28,374 INFO L78 Accepts]: Start accepts. Automaton has 262070 states and 281449 transitions. Word has length 2094 [2021-12-07 01:01:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:28,375 INFO L470 AbstractCegarLoop]: Abstraction has 262070 states and 281449 transitions. [2021-12-07 01:01:28,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 698.0) internal successors, (2094), 3 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 262070 states and 281449 transitions. [2021-12-07 01:01:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2143 [2021-12-07 01:01:28,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:28,738 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:28,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:01:28,739 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash -815420352, now seen corresponding path program 1 times [2021-12-07 01:01:28,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:28,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135440302] [2021-12-07 01:01:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:28,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-07 01:01:29,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:29,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135440302] [2021-12-07 01:01:29,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135440302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:29,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:29,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:29,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370246686] [2021-12-07 01:01:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:29,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:29,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:29,661 INFO L87 Difference]: Start difference. First operand 262070 states and 281449 transitions. Second operand has 3 states, 3 states have (on average 702.6666666666666) internal successors, (2108), 3 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:34,118 INFO L93 Difference]: Finished difference Result 530937 states and 569772 transitions. [2021-12-07 01:01:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:34,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 702.6666666666666) internal successors, (2108), 3 states have internal predecessors, (2108), 0 states have call successors, (0), 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 2142 [2021-12-07 01:01:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:34,394 INFO L225 Difference]: With dead ends: 530937 [2021-12-07 01:01:34,395 INFO L226 Difference]: Without dead ends: 267160 [2021-12-07 01:01:34,574 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:01:34,575 INFO L933 BasicCegarLoop]: 2863 mSDtfsCounter, 2189 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4841 mSolverCounterSat, 1520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 6361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1520 IncrementalHoareTripleChecker+Valid, 4841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:34,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2189 Valid, 2968 Invalid, 6361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1520 Valid, 4841 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-07 01:01:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267160 states. [2021-12-07 01:01:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267160 to 255266. [2021-12-07 01:01:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255266 states, 255265 states have (on average 1.0604078114900202) internal successors, (270685), 255265 states have internal predecessors, (270685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255266 states to 255266 states and 270685 transitions. [2021-12-07 01:01:37,267 INFO L78 Accepts]: Start accepts. Automaton has 255266 states and 270685 transitions. Word has length 2142 [2021-12-07 01:01:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:37,268 INFO L470 AbstractCegarLoop]: Abstraction has 255266 states and 270685 transitions. [2021-12-07 01:01:37,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 702.6666666666666) internal successors, (2108), 3 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 255266 states and 270685 transitions. [2021-12-07 01:01:37,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2214 [2021-12-07 01:01:37,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:37,422 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:37,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:01:37,422 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:37,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash 742049574, now seen corresponding path program 1 times [2021-12-07 01:01:37,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:37,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056031902] [2021-12-07 01:01:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:37,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 849 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-12-07 01:01:38,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:38,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056031902] [2021-12-07 01:01:38,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056031902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:38,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:38,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:38,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688480444] [2021-12-07 01:01:38,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:38,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:38,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:38,278 INFO L87 Difference]: Start difference. First operand 255266 states and 270685 transitions. Second operand has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:42,727 INFO L93 Difference]: Finished difference Result 515630 states and 546489 transitions. [2021-12-07 01:01:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 0 states have call successors, (0), 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 2213 [2021-12-07 01:01:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:43,139 INFO L225 Difference]: With dead ends: 515630 [2021-12-07 01:01:43,140 INFO L226 Difference]: Without dead ends: 255242 [2021-12-07 01:01:43,232 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:01:43,233 INFO L933 BasicCegarLoop]: 3547 mSDtfsCounter, 1810 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 5490 mSolverCounterSat, 1172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 6662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1172 IncrementalHoareTripleChecker+Valid, 5490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:43,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 3789 Invalid, 6662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1172 Valid, 5490 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-07 01:01:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255242 states. [2021-12-07 01:01:45,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255242 to 253534. [2021-12-07 01:01:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253534 states, 253533 states have (on average 1.0435801256641146) internal successors, (264582), 253533 states have internal predecessors, (264582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253534 states to 253534 states and 264582 transitions. [2021-12-07 01:01:45,870 INFO L78 Accepts]: Start accepts. Automaton has 253534 states and 264582 transitions. Word has length 2213 [2021-12-07 01:01:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:45,870 INFO L470 AbstractCegarLoop]: Abstraction has 253534 states and 264582 transitions. [2021-12-07 01:01:45,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 253534 states and 264582 transitions. [2021-12-07 01:01:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2228 [2021-12-07 01:01:46,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:46,021 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:46,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:01:46,021 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1252794151, now seen corresponding path program 1 times [2021-12-07 01:01:46,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:46,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484562243] [2021-12-07 01:01:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:46,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-07 01:01:47,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:47,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484562243] [2021-12-07 01:01:47,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484562243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:47,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:47,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:01:47,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003984208] [2021-12-07 01:01:47,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:47,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:47,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:47,022 INFO L87 Difference]: Start difference. First operand 253534 states and 264582 transitions. Second operand has 3 states, 3 states have (on average 703.0) internal successors, (2109), 2 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:51,203 INFO L93 Difference]: Finished difference Result 546124 states and 569578 transitions. [2021-12-07 01:01:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:51,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 703.0) internal successors, (2109), 2 states have internal predecessors, (2109), 0 states have call successors, (0), 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 2227 [2021-12-07 01:01:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:51,491 INFO L225 Difference]: With dead ends: 546124 [2021-12-07 01:01:51,491 INFO L226 Difference]: Without dead ends: 290864 [2021-12-07 01:01:51,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:51,602 INFO L933 BasicCegarLoop]: 1822 mSDtfsCounter, 1690 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4448 mSolverCounterSat, 1270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1270 IncrementalHoareTripleChecker+Valid, 4448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:51,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 1990 Invalid, 5718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1270 Valid, 4448 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-07 01:01:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290864 states. [2021-12-07 01:01:53,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290864 to 275581. [2021-12-07 01:01:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275581 states, 275580 states have (on average 1.0229661078452719) internal successors, (281909), 275580 states have internal predecessors, (281909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275581 states to 275581 states and 281909 transitions. [2021-12-07 01:01:54,365 INFO L78 Accepts]: Start accepts. Automaton has 275581 states and 281909 transitions. Word has length 2227 [2021-12-07 01:01:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:54,366 INFO L470 AbstractCegarLoop]: Abstraction has 275581 states and 281909 transitions. [2021-12-07 01:01:54,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 703.0) internal successors, (2109), 2 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 275581 states and 281909 transitions. [2021-12-07 01:01:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2232 [2021-12-07 01:01:54,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:54,737 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:54,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:01:54,737 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1461392050, now seen corresponding path program 1 times [2021-12-07 01:01:54,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:54,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921631967] [2021-12-07 01:01:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:54,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2021-12-07 01:01:55,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:55,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921631967] [2021-12-07 01:01:55,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921631967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:55,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:55,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:55,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595831655] [2021-12-07 01:01:55,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:55,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:55,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:55,583 INFO L87 Difference]: Start difference. First operand 275581 states and 281909 transitions. Second operand has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:59,874 INFO L93 Difference]: Finished difference Result 617450 states and 631452 transitions. [2021-12-07 01:01:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:59,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 0 states have call successors, (0), 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 2231 [2021-12-07 01:01:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:00,184 INFO L225 Difference]: With dead ends: 617450 [2021-12-07 01:02:00,184 INFO L226 Difference]: Without dead ends: 341871 [2021-12-07 01:02:00,241 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:02:00,242 INFO L933 BasicCegarLoop]: 3029 mSDtfsCounter, 1551 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 4835 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 5162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 4835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:00,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 3241 Invalid, 5162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 4835 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 01:02:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341871 states. [2021-12-07 01:02:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341871 to 331617. [2021-12-07 01:02:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331617 states, 331616 states have (on average 1.021669641995561) internal successors, (338802), 331616 states have internal predecessors, (338802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331617 states to 331617 states and 338802 transitions. [2021-12-07 01:02:03,520 INFO L78 Accepts]: Start accepts. Automaton has 331617 states and 338802 transitions. Word has length 2231 [2021-12-07 01:02:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:03,520 INFO L470 AbstractCegarLoop]: Abstraction has 331617 states and 338802 transitions. [2021-12-07 01:02:03,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:03,521 INFO L276 IsEmpty]: Start isEmpty. Operand 331617 states and 338802 transitions. [2021-12-07 01:02:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2246 [2021-12-07 01:02:03,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:03,969 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:03,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:02:03,969 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1591336555, now seen corresponding path program 1 times [2021-12-07 01:02:03,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:03,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085312588] [2021-12-07 01:02:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:03,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-07 01:02:04,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:04,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085312588] [2021-12-07 01:02:04,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085312588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:04,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:04,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:02:04,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221149550] [2021-12-07 01:02:04,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:04,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:02:04,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:02:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:02:04,849 INFO L87 Difference]: Start difference. First operand 331617 states and 338802 transitions. Second operand has 4 states, 4 states have (on average 531.75) internal successors, (2127), 3 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:10,443 INFO L93 Difference]: Finished difference Result 675148 states and 689701 transitions. [2021-12-07 01:02:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:02:10,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 531.75) internal successors, (2127), 3 states have internal predecessors, (2127), 0 states have call successors, (0), 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 2245 [2021-12-07 01:02:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:10,803 INFO L225 Difference]: With dead ends: 675148 [2021-12-07 01:02:10,804 INFO L226 Difference]: Without dead ends: 341829 [2021-12-07 01:02:10,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:02:10,913 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 3841 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 8510 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3841 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 9135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 8510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:10,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3841 Valid, 1115 Invalid, 9135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 8510 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-07 01:02:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341829 states. [2021-12-07 01:02:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341829 to 333310. [2021-12-07 01:02:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333310 states, 333309 states have (on average 1.0216435799813386) internal successors, (340523), 333309 states have internal predecessors, (340523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333310 states to 333310 states and 340523 transitions. [2021-12-07 01:02:14,559 INFO L78 Accepts]: Start accepts. Automaton has 333310 states and 340523 transitions. Word has length 2245 [2021-12-07 01:02:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:14,560 INFO L470 AbstractCegarLoop]: Abstraction has 333310 states and 340523 transitions. [2021-12-07 01:02:14,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 531.75) internal successors, (2127), 3 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:14,561 INFO L276 IsEmpty]: Start isEmpty. Operand 333310 states and 340523 transitions. [2021-12-07 01:02:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2305 [2021-12-07 01:02:14,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:14,939 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:14,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:02:14,939 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1740034769, now seen corresponding path program 1 times [2021-12-07 01:02:14,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:14,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843802747] [2021-12-07 01:02:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:14,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 796 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:15,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:15,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843802747] [2021-12-07 01:02:15,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843802747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:15,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:15,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:02:15,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500856251] [2021-12-07 01:02:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:15,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:02:15,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:02:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:02:15,752 INFO L87 Difference]: Start difference. First operand 333310 states and 340523 transitions. Second operand has 3 states, 3 states have (on average 768.0) internal successors, (2304), 3 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:19,702 INFO L93 Difference]: Finished difference Result 659807 states and 673979 transitions. [2021-12-07 01:02:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:02:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 768.0) internal successors, (2304), 3 states have internal predecessors, (2304), 0 states have call successors, (0), 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 2304 [2021-12-07 01:02:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:20,047 INFO L225 Difference]: With dead ends: 659807 [2021-12-07 01:02:20,047 INFO L226 Difference]: Without dead ends: 326498 [2021-12-07 01:02:20,320 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:02:20,320 INFO L933 BasicCegarLoop]: 2587 mSDtfsCounter, 1855 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 4938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:20,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 2852 Invalid, 4938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:02:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326498 states. [2021-12-07 01:02:23,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326498 to 326494. [2021-12-07 01:02:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326494 states, 326493 states have (on average 1.0160799772123752) internal successors, (331743), 326493 states have internal predecessors, (331743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326494 states to 326494 states and 331743 transitions. [2021-12-07 01:02:23,593 INFO L78 Accepts]: Start accepts. Automaton has 326494 states and 331743 transitions. Word has length 2304 [2021-12-07 01:02:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:23,594 INFO L470 AbstractCegarLoop]: Abstraction has 326494 states and 331743 transitions. [2021-12-07 01:02:23,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 768.0) internal successors, (2304), 3 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 326494 states and 331743 transitions. [2021-12-07 01:02:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2384 [2021-12-07 01:02:23,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:23,941 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:23,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:02:23,941 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:23,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1361832087, now seen corresponding path program 1 times [2021-12-07 01:02:23,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:23,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314964881] [2021-12-07 01:02:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:23,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-07 01:02:26,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:26,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314964881] [2021-12-07 01:02:26,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314964881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:26,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:26,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-07 01:02:26,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891941988] [2021-12-07 01:02:26,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:26,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 01:02:26,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 01:02:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:02:26,081 INFO L87 Difference]: Start difference. First operand 326494 states and 331743 transitions. Second operand has 16 states, 16 states have (on average 133.875) internal successors, (2142), 15 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:48,041 INFO L93 Difference]: Finished difference Result 740262 states and 752321 transitions. [2021-12-07 01:02:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-07 01:02:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 133.875) internal successors, (2142), 15 states have internal predecessors, (2142), 0 states have call successors, (0), 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 2383 [2021-12-07 01:02:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:48,519 INFO L225 Difference]: With dead ends: 740262 [2021-12-07 01:02:48,519 INFO L226 Difference]: Without dead ends: 413770 [2021-12-07 01:02:48,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=684, Invalid=1866, Unknown=0, NotChecked=0, Total=2550 [2021-12-07 01:02:48,643 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 13167 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 48752 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13167 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 49458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 48752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:48,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13167 Valid, 2241 Invalid, 49458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [706 Valid, 48752 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2021-12-07 01:02:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413770 states. [2021-12-07 01:02:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413770 to 322571. [2021-12-07 01:02:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322571 states, 322570 states have (on average 1.016061630033791) internal successors, (327751), 322570 states have internal predecessors, (327751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322571 states to 322571 states and 327751 transitions. [2021-12-07 01:02:52,252 INFO L78 Accepts]: Start accepts. Automaton has 322571 states and 327751 transitions. Word has length 2383 [2021-12-07 01:02:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:52,253 INFO L470 AbstractCegarLoop]: Abstraction has 322571 states and 327751 transitions. [2021-12-07 01:02:52,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 133.875) internal successors, (2142), 15 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 322571 states and 327751 transitions. [2021-12-07 01:02:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2396 [2021-12-07 01:02:52,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:52,660 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:52,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:02:52,660 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1996223246, now seen corresponding path program 1 times [2021-12-07 01:02:52,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:52,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61212792] [2021-12-07 01:02:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:52,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 1361 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-12-07 01:02:53,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:53,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61212792] [2021-12-07 01:02:53,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61212792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:53,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:53,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:02:53,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384861200] [2021-12-07 01:02:53,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:53,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:02:53,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:53,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:02:53,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:02:53,537 INFO L87 Difference]: Start difference. First operand 322571 states and 327751 transitions. Second operand has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:57,711 INFO L93 Difference]: Finished difference Result 733428 states and 745743 transitions. [2021-12-07 01:02:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:02:57,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 0 states have call successors, (0), 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 2395 [2021-12-07 01:02:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:58,137 INFO L225 Difference]: With dead ends: 733428 [2021-12-07 01:02:58,138 INFO L226 Difference]: Without dead ends: 410859 [2021-12-07 01:02:58,209 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:02:58,209 INFO L933 BasicCegarLoop]: 2822 mSDtfsCounter, 1654 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 4112 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 4112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:58,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 3087 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 4112 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:02:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410859 states. [2021-12-07 01:03:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410859 to 392179. [2021-12-07 01:03:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392179 states, 392178 states have (on average 1.0139604975291832) internal successors, (397653), 392178 states have internal predecessors, (397653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392179 states to 392179 states and 397653 transitions. [2021-12-07 01:03:02,167 INFO L78 Accepts]: Start accepts. Automaton has 392179 states and 397653 transitions. Word has length 2395 [2021-12-07 01:03:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:02,167 INFO L470 AbstractCegarLoop]: Abstraction has 392179 states and 397653 transitions. [2021-12-07 01:03:02,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 392179 states and 397653 transitions. [2021-12-07 01:03:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2601 [2021-12-07 01:03:02,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:02,616 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:02,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 01:03:02,617 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:02,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1967468191, now seen corresponding path program 1 times [2021-12-07 01:03:02,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:02,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939689437] [2021-12-07 01:03:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:02,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 929 proven. 0 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2021-12-07 01:03:04,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:04,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939689437] [2021-12-07 01:03:04,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939689437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:04,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:03:04,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:03:04,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598160679] [2021-12-07 01:03:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:04,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:04,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:04,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:04,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:04,045 INFO L87 Difference]: Start difference. First operand 392179 states and 397653 transitions. Second operand has 3 states, 3 states have (on average 665.6666666666666) internal successors, (1997), 3 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:03:08,915 INFO L93 Difference]: Finished difference Result 850104 states and 862435 transitions. [2021-12-07 01:03:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:03:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 665.6666666666666) internal successors, (1997), 3 states have internal predecessors, (1997), 0 states have call successors, (0), 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 2600 [2021-12-07 01:03:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:03:09,446 INFO L225 Difference]: With dead ends: 850104 [2021-12-07 01:03:09,447 INFO L226 Difference]: Without dead ends: 452814 [2021-12-07 01:03:09,594 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:03:09,594 INFO L933 BasicCegarLoop]: 2825 mSDtfsCounter, 184 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 4556 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 5273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 4556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:03:09,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 2984 Invalid, 5273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 4556 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-07 01:03:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452814 states. [2021-12-07 01:03:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452814 to 432896. [2021-12-07 01:03:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432896 states, 432895 states have (on average 1.0120398711003824) internal successors, (438107), 432895 states have internal predecessors, (438107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432896 states to 432896 states and 438107 transitions. [2021-12-07 01:03:14,175 INFO L78 Accepts]: Start accepts. Automaton has 432896 states and 438107 transitions. Word has length 2600 [2021-12-07 01:03:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:14,177 INFO L470 AbstractCegarLoop]: Abstraction has 432896 states and 438107 transitions. [2021-12-07 01:03:14,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 665.6666666666666) internal successors, (1997), 3 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 432896 states and 438107 transitions. [2021-12-07 01:03:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2700 [2021-12-07 01:03:14,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:14,692 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:14,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 01:03:14,692 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1758467993, now seen corresponding path program 1 times [2021-12-07 01:03:14,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:14,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455718348] [2021-12-07 01:03:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:14,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2497 backedges. 1520 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2021-12-07 01:03:15,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:15,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455718348] [2021-12-07 01:03:15,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455718348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:15,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:03:15,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:03:15,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767944466] [2021-12-07 01:03:15,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:15,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:15,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:15,829 INFO L87 Difference]: Start difference. First operand 432896 states and 438107 transitions. Second operand has 3 states, 3 states have (on average 719.0) internal successors, (2157), 3 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:03:20,642 INFO L93 Difference]: Finished difference Result 882816 states and 893258 transitions. [2021-12-07 01:03:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:03:20,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 719.0) internal successors, (2157), 3 states have internal predecessors, (2157), 0 states have call successors, (0), 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 2699 [2021-12-07 01:03:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:03:21,140 INFO L225 Difference]: With dead ends: 882816 [2021-12-07 01:03:21,141 INFO L226 Difference]: Without dead ends: 448212 [2021-12-07 01:03:21,272 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:03:21,273 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 1688 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4658 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 4942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 4658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:03:21,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 1314 Invalid, 4942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 4658 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 01:03:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448212 states. [2021-12-07 01:03:25,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448212 to 429487. [2021-12-07 01:03:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429487 states, 429486 states have (on average 1.010859492509651) internal successors, (434150), 429486 states have internal predecessors, (434150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429487 states to 429487 states and 434150 transitions. [2021-12-07 01:03:25,848 INFO L78 Accepts]: Start accepts. Automaton has 429487 states and 434150 transitions. Word has length 2699 [2021-12-07 01:03:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:25,849 INFO L470 AbstractCegarLoop]: Abstraction has 429487 states and 434150 transitions. [2021-12-07 01:03:25,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 719.0) internal successors, (2157), 3 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 429487 states and 434150 transitions. [2021-12-07 01:03:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2851 [2021-12-07 01:03:26,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:26,200 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:26,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:03:26,200 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1782566693, now seen corresponding path program 1 times [2021-12-07 01:03:26,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:26,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466192003] [2021-12-07 01:03:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:26,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 2145 proven. 422 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-12-07 01:03:27,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:27,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466192003] [2021-12-07 01:03:27,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466192003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:03:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092744205] [2021-12-07 01:03:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:27,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:27,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:03:27,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:03:27,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:03:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:28,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 3171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:03:28,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:03:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1835 proven. 0 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2021-12-07 01:03:30,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:03:30,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092744205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:30,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:03:30,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-12-07 01:03:30,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076944831] [2021-12-07 01:03:30,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:30,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:30,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:03:30,585 INFO L87 Difference]: Start difference. First operand 429487 states and 434150 transitions. Second operand has 3 states, 3 states have (on average 685.0) internal successors, (2055), 3 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:03:35,060 INFO L93 Difference]: Finished difference Result 858959 states and 868251 transitions. [2021-12-07 01:03:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:03:35,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 685.0) internal successors, (2055), 3 states have internal predecessors, (2055), 0 states have call successors, (0), 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 2850 [2021-12-07 01:03:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:03:35,545 INFO L225 Difference]: With dead ends: 858959 [2021-12-07 01:03:35,545 INFO L226 Difference]: Without dead ends: 427775 [2021-12-07 01:03:35,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2855 GetRequests, 2849 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:03:35,687 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 424 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4244 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 4798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 4244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:03:35,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 712 Invalid, 4798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 4244 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:03:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427775 states. [2021-12-07 01:03:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427775 to 419278. [2021-12-07 01:03:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419278 states, 419277 states have (on average 1.0086482206274134) internal successors, (422903), 419277 states have internal predecessors, (422903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419278 states to 419278 states and 422903 transitions. [2021-12-07 01:03:40,187 INFO L78 Accepts]: Start accepts. Automaton has 419278 states and 422903 transitions. Word has length 2850 [2021-12-07 01:03:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:40,188 INFO L470 AbstractCegarLoop]: Abstraction has 419278 states and 422903 transitions. [2021-12-07 01:03:40,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 685.0) internal successors, (2055), 3 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 419278 states and 422903 transitions. [2021-12-07 01:03:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4415 [2021-12-07 01:03:40,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:40,761 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:40,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:03:40,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dab958d-36e9-4965-8cc9-e3f98694dd0f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:40,963 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:40,968 INFO L85 PathProgramCache]: Analyzing trace with hash -905514248, now seen corresponding path program 1 times [2021-12-07 01:03:40,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:40,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50007861] [2021-12-07 01:03:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:40,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 6402 proven. 0 refuted. 0 times theorem prover too weak. 4550 trivial. 0 not checked. [2021-12-07 01:03:43,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:43,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50007861] [2021-12-07 01:03:43,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50007861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:43,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:03:43,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:03:43,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815951243] [2021-12-07 01:03:43,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:43,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:43,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:43,875 INFO L87 Difference]: Start difference. First operand 419278 states and 422903 transitions. Second operand has 3 states, 3 states have (on average 760.3333333333334) internal successors, (2281), 3 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:03:48,827 INFO L93 Difference]: Finished difference Result 916664 states and 924644 transitions. [2021-12-07 01:03:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:03:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 760.3333333333334) internal successors, (2281), 3 states have internal predecessors, (2281), 0 states have call successors, (0), 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 4414 [2021-12-07 01:03:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:03:49,379 INFO L225 Difference]: With dead ends: 916664 [2021-12-07 01:03:49,380 INFO L226 Difference]: Without dead ends: 495678 [2021-12-07 01:03:49,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:49,536 INFO L933 BasicCegarLoop]: 2284 mSDtfsCounter, 1814 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4227 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 4970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 4227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:03:49,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1814 Valid, 2340 Invalid, 4970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 4227 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 01:03:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495678 states. [2021-12-07 01:03:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495678 to 478688. [2021-12-07 01:03:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478688 states, 478687 states have (on average 1.0077064971474052) internal successors, (482376), 478687 states have internal predecessors, (482376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478688 states to 478688 states and 482376 transitions. [2021-12-07 01:03:54,684 INFO L78 Accepts]: Start accepts. Automaton has 478688 states and 482376 transitions. Word has length 4414 [2021-12-07 01:03:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:54,686 INFO L470 AbstractCegarLoop]: Abstraction has 478688 states and 482376 transitions. [2021-12-07 01:03:54,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 760.3333333333334) internal successors, (2281), 3 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:03:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 478688 states and 482376 transitions. [2021-12-07 01:03:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4512 [2021-12-07 01:03:55,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:55,422 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:55,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:03:55,422 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:55,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1602223922, now seen corresponding path program 1 times [2021-12-07 01:03:55,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:55,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450155857] [2021-12-07 01:03:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:55,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10601 backedges. 5110 proven. 0 refuted. 0 times theorem prover too weak. 5491 trivial. 0 not checked. [2021-12-07 01:03:58,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:58,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450155857] [2021-12-07 01:03:58,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450155857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:58,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:03:58,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:03:58,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903323991] [2021-12-07 01:03:58,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:58,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:58,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:58,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:58,140 INFO L87 Difference]: Start difference. First operand 478688 states and 482376 transitions. Second operand has 3 states, 3 states have (on average 731.6666666666666) internal successors, (2195), 3 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:03,155 INFO L93 Difference]: Finished difference Result 948890 states and 956203 transitions. [2021-12-07 01:04:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:03,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 731.6666666666666) internal successors, (2195), 3 states have internal predecessors, (2195), 0 states have call successors, (0), 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 4511 [2021-12-07 01:04:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:03,879 INFO L225 Difference]: With dead ends: 948890 [2021-12-07 01:04:03,879 INFO L226 Difference]: Without dead ends: 468506 [2021-12-07 01:04:03,986 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:04:03,987 INFO L933 BasicCegarLoop]: 2574 mSDtfsCounter, 1661 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4413 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 4886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 4413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:03,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1661 Valid, 2709 Invalid, 4886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 4413 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-07 01:04:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468506 states. [2021-12-07 01:04:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468506 to 441296. [2021-12-07 01:04:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441296 states, 441295 states have (on average 1.006431072185273) internal successors, (444133), 441295 states have internal predecessors, (444133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441296 states to 441296 states and 444133 transitions. [2021-12-07 01:04:08,631 INFO L78 Accepts]: Start accepts. Automaton has 441296 states and 444133 transitions. Word has length 4511 [2021-12-07 01:04:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:08,631 INFO L470 AbstractCegarLoop]: Abstraction has 441296 states and 444133 transitions. [2021-12-07 01:04:08,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 731.6666666666666) internal successors, (2195), 3 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 441296 states and 444133 transitions.