./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G --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 7539b1e5f39ef0b663906f618cec169c1b82b84e2b7e5d0166bd24e138434223 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:25:12,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:25:12,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:25:12,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:25:12,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:25:12,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:25:12,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:25:12,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:25:12,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:25:12,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:25:12,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:25:12,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:25:12,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:25:12,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:25:12,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:25:12,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:25:12,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:25:12,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:25:12,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:25:12,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:25:12,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:25:12,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:25:12,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:25:12,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:25:12,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:25:12,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:25:12,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:25:12,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:25:12,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:25:12,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:25:12,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:25:12,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:25:12,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:25:12,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:25:12,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:25:12,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:25:12,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:25:12,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:25:12,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:25:12,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:25:12,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:25:12,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:25:12,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:25:12,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:25:12,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:25:12,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:25:12,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:25:12,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:25:12,532 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:25:12,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:25:12,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:25:12,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:25:12,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:25:12,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:25:12,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:25:12,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:25:12,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:25:12,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:25:12,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:25:12,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:25:12,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:25:12,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:25:12,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:25:12,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:25:12,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:25:12,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:25:12,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:25:12,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:25:12,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:25:12,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:25:12,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:25:12,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:25:12,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:25:12,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:25:12,538 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_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7539b1e5f39ef0b663906f618cec169c1b82b84e2b7e5d0166bd24e138434223 [2021-11-23 12:25:12,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:25:12,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:25:12,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:25:12,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:25:12,971 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:25:12,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-23 12:25:13,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/data/40a99f036/d0a9ab8b936e4cceb9ce1ce7cd01208e/FLAG171e98589 [2021-11-23 12:25:13,988 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:25:13,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-23 12:25:14,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/data/40a99f036/d0a9ab8b936e4cceb9ce1ce7cd01208e/FLAG171e98589 [2021-11-23 12:25:14,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/data/40a99f036/d0a9ab8b936e4cceb9ce1ce7cd01208e [2021-11-23 12:25:14,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:25:14,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:25:14,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:25:14,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:25:14,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:25:14,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:25:14" (1/1) ... [2021-11-23 12:25:14,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ceeb31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:14, skipping insertion in model container [2021-11-23 12:25:14,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:25:14" (1/1) ... [2021-11-23 12:25:14,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:25:14,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:25:14,827 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_f4c0729f-cc25-4420-9cb1-05e0fbfde424/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[23233,23246] [2021-11-23 12:25:15,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:25:15,126 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:25:15,358 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_f4c0729f-cc25-4420-9cb1-05e0fbfde424/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[23233,23246] [2021-11-23 12:25:15,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:25:15,543 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:25:15,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15 WrapperNode [2021-11-23 12:25:15,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:25:15,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:25:15,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:25:15,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:25:15,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:15,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:15,790 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2878 [2021-11-23 12:25:15,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:25:15,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:25:15,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:25:15,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:25:15,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:15,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:15,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:15,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:15,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:16,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:16,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:16,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:25:16,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:25:16,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:25:16,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:25:16,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (1/1) ... [2021-11-23 12:25:16,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:25:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:25:16,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:25:16,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4c0729f-cc25-4420-9cb1-05e0fbfde424/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:25:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:25:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:25:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:25:16,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:25:16,564 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:25:16,566 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:25:19,235 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:25:19,266 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:25:19,267 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:25:19,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:25:19 BoogieIcfgContainer [2021-11-23 12:25:19,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:25:19,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:25:19,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:25:19,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:25:19,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:25:14" (1/3) ... [2021-11-23 12:25:19,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f880de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:25:19, skipping insertion in model container [2021-11-23 12:25:19,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:15" (2/3) ... [2021-11-23 12:25:19,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f880de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:25:19, skipping insertion in model container [2021-11-23 12:25:19,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:25:19" (3/3) ... [2021-11-23 12:25:19,283 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-23 12:25:19,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:25:19,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:25:19,380 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:25:19,387 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 [2021-11-23 12:25:19,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:25:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 768 states have (on average 1.8372395833333333) internal successors, (1411), 769 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-23 12:25:19,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:19,490 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] [2021-11-23 12:25:19,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1014698446, now seen corresponding path program 1 times [2021-11-23 12:25:19,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:19,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580943133] [2021-11-23 12:25:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:19,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:20,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:20,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580943133] [2021-11-23 12:25:20,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580943133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:20,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:20,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:20,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706382273] [2021-11-23 12:25:20,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:20,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:20,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:20,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:20,318 INFO L87 Difference]: Start difference. First operand has 770 states, 768 states have (on average 1.8372395833333333) internal successors, (1411), 769 states have internal predecessors, (1411), 0 states have call successors, (0), 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 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:20,542 INFO L93 Difference]: Finished difference Result 1200 states and 2139 transitions. [2021-11-23 12:25:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2021-11-23 12:25:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:20,576 INFO L225 Difference]: With dead ends: 1200 [2021-11-23 12:25:20,577 INFO L226 Difference]: Without dead ends: 972 [2021-11-23 12:25:20,584 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 [2021-11-23 12:25:20,588 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 392 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:20,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 2700 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-23 12:25:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 970. [2021-11-23 12:25:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.7358101135190918) internal successors, (1682), 969 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1682 transitions. [2021-11-23 12:25:20,707 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1682 transitions. Word has length 213 [2021-11-23 12:25:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:20,709 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1682 transitions. [2021-11-23 12:25:20,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1682 transitions. [2021-11-23 12:25:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-23 12:25:20,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:20,715 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] [2021-11-23 12:25:20,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:25:20,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash 327914487, now seen corresponding path program 1 times [2021-11-23 12:25:20,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:20,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007235226] [2021-11-23 12:25:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:20,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:20,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:20,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007235226] [2021-11-23 12:25:20,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007235226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:20,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:20,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:20,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921693135] [2021-11-23 12:25:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:21,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:21,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:21,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:21,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:21,004 INFO L87 Difference]: Start difference. First operand 970 states and 1682 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:21,121 INFO L93 Difference]: Finished difference Result 1790 states and 3066 transitions. [2021-11-23 12:25:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-23 12:25:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:21,135 INFO L225 Difference]: With dead ends: 1790 [2021-11-23 12:25:21,135 INFO L226 Difference]: Without dead ends: 1368 [2021-11-23 12:25:21,146 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 [2021-11-23 12:25:21,149 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 339 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:21,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2623 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2021-11-23 12:25:21,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1366. [2021-11-23 12:25:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 1.720879120879121) internal successors, (2349), 1365 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2349 transitions. [2021-11-23 12:25:21,224 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2349 transitions. Word has length 217 [2021-11-23 12:25:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:21,227 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 2349 transitions. [2021-11-23 12:25:21,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2349 transitions. [2021-11-23 12:25:21,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-23 12:25:21,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:21,236 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] [2021-11-23 12:25:21,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:25:21,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:21,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash 279788732, now seen corresponding path program 1 times [2021-11-23 12:25:21,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:21,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387961949] [2021-11-23 12:25:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:21,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:21,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:21,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387961949] [2021-11-23 12:25:21,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387961949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:21,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:21,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:21,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179349353] [2021-11-23 12:25:21,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:21,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:21,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:21,521 INFO L87 Difference]: Start difference. First operand 1366 states and 2349 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:21,659 INFO L93 Difference]: Finished difference Result 2954 states and 5023 transitions. [2021-11-23 12:25:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2021-11-23 12:25:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:21,679 INFO L225 Difference]: With dead ends: 2954 [2021-11-23 12:25:21,680 INFO L226 Difference]: Without dead ends: 2136 [2021-11-23 12:25:21,683 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 [2021-11-23 12:25:21,694 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 331 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:21,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2624 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2021-11-23 12:25:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2134. [2021-11-23 12:25:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2133 states have (on average 1.705110173464604) internal successors, (3637), 2133 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3637 transitions. [2021-11-23 12:25:21,842 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3637 transitions. Word has length 221 [2021-11-23 12:25:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:21,843 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 3637 transitions. [2021-11-23 12:25:21,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3637 transitions. [2021-11-23 12:25:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-23 12:25:21,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:21,852 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] [2021-11-23 12:25:21,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:25:21,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:21,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash 591971201, now seen corresponding path program 1 times [2021-11-23 12:25:21,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:21,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360950263] [2021-11-23 12:25:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:21,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:22,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:22,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360950263] [2021-11-23 12:25:22,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360950263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:22,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:22,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:22,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459318874] [2021-11-23 12:25:22,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:22,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:22,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:22,093 INFO L87 Difference]: Start difference. First operand 2134 states and 3637 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:22,290 INFO L93 Difference]: Finished difference Result 5210 states and 8799 transitions. [2021-11-23 12:25:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:22,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2021-11-23 12:25:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:22,318 INFO L225 Difference]: With dead ends: 5210 [2021-11-23 12:25:22,318 INFO L226 Difference]: Without dead ends: 3624 [2021-11-23 12:25:22,322 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 [2021-11-23 12:25:22,331 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 323 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:22,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2625 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-11-23 12:25:22,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3622. [2021-11-23 12:25:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 1.6904170118751727) internal successors, (6121), 3621 states have internal predecessors, (6121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6121 transitions. [2021-11-23 12:25:22,553 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6121 transitions. Word has length 225 [2021-11-23 12:25:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:22,554 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6121 transitions. [2021-11-23 12:25:22,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6121 transitions. [2021-11-23 12:25:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-23 12:25:22,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:22,563 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] [2021-11-23 12:25:22,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:25:22,563 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:22,566 INFO L85 PathProgramCache]: Analyzing trace with hash -62749882, now seen corresponding path program 1 times [2021-11-23 12:25:22,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:22,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703160623] [2021-11-23 12:25:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:22,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:22,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:22,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703160623] [2021-11-23 12:25:22,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703160623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:22,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:22,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:22,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660000527] [2021-11-23 12:25:22,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:22,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:22,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:22,773 INFO L87 Difference]: Start difference. First operand 3622 states and 6121 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:23,107 INFO L93 Difference]: Finished difference Result 9578 states and 16075 transitions. [2021-11-23 12:25:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2021-11-23 12:25:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:23,159 INFO L225 Difference]: With dead ends: 9578 [2021-11-23 12:25:23,159 INFO L226 Difference]: Without dead ends: 6504 [2021-11-23 12:25:23,169 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 [2021-11-23 12:25:23,170 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 315 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:23,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2626 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2021-11-23 12:25:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 6502. [2021-11-23 12:25:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6502 states, 6501 states have (on average 1.6774342408860174) internal successors, (10905), 6501 states have internal predecessors, (10905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 10905 transitions. [2021-11-23 12:25:23,604 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 10905 transitions. Word has length 229 [2021-11-23 12:25:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:23,605 INFO L470 AbstractCegarLoop]: Abstraction has 6502 states and 10905 transitions. [2021-11-23 12:25:23,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 10905 transitions. [2021-11-23 12:25:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-23 12:25:23,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:23,620 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] [2021-11-23 12:25:23,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:25:23,620 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1568385269, now seen corresponding path program 1 times [2021-11-23 12:25:23,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:23,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900851747] [2021-11-23 12:25:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:23,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:23,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:23,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900851747] [2021-11-23 12:25:23,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900851747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:23,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:23,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:25:23,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464465495] [2021-11-23 12:25:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:23,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:25:23,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:25:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:25:23,868 INFO L87 Difference]: Start difference. First operand 6502 states and 10905 transitions. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:26,490 INFO L93 Difference]: Finished difference Result 40026 states and 67187 transitions. [2021-11-23 12:25:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:25:26,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2021-11-23 12:25:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:26,687 INFO L225 Difference]: With dead ends: 40026 [2021-11-23 12:25:26,687 INFO L226 Difference]: Without dead ends: 34072 [2021-11-23 12:25:26,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:25:26,710 INFO L933 BasicCegarLoop]: 1326 mSDtfsCounter, 5656 mSDsluCounter, 9272 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 10598 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:26,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5656 Valid, 10598 Invalid, 184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:25:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34072 states. [2021-11-23 12:25:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34072 to 12239. [2021-11-23 12:25:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12239 states, 12238 states have (on average 1.672577218499755) internal successors, (20469), 12238 states have internal predecessors, (20469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12239 states to 12239 states and 20469 transitions. [2021-11-23 12:25:28,332 INFO L78 Accepts]: Start accepts. Automaton has 12239 states and 20469 transitions. Word has length 233 [2021-11-23 12:25:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:28,333 INFO L470 AbstractCegarLoop]: Abstraction has 12239 states and 20469 transitions. [2021-11-23 12:25:28,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 12239 states and 20469 transitions. [2021-11-23 12:25:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-23 12:25:28,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:28,354 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] [2021-11-23 12:25:28,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:25:28,355 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1446922808, now seen corresponding path program 1 times [2021-11-23 12:25:28,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:28,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231481404] [2021-11-23 12:25:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:28,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:28,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:28,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231481404] [2021-11-23 12:25:28,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231481404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:28,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:28,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:25:28,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091693193] [2021-11-23 12:25:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:28,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:25:28,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:25:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:25:28,577 INFO L87 Difference]: Start difference. First operand 12239 states and 20469 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:30,321 INFO L93 Difference]: Finished difference Result 35948 states and 60212 transitions. [2021-11-23 12:25:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:25:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2021-11-23 12:25:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:30,424 INFO L225 Difference]: With dead ends: 35948 [2021-11-23 12:25:30,424 INFO L226 Difference]: Without dead ends: 24257 [2021-11-23 12:25:30,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:25:30,451 INFO L933 BasicCegarLoop]: 1332 mSDtfsCounter, 1087 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 4308 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:30,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 4308 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:25:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24257 states. [2021-11-23 12:25:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24257 to 18215. [2021-11-23 12:25:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18215 states, 18214 states have (on average 1.6726144723838805) internal successors, (30465), 18214 states have internal predecessors, (30465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18215 states to 18215 states and 30465 transitions. [2021-11-23 12:25:32,007 INFO L78 Accepts]: Start accepts. Automaton has 18215 states and 30465 transitions. Word has length 234 [2021-11-23 12:25:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:32,008 INFO L470 AbstractCegarLoop]: Abstraction has 18215 states and 30465 transitions. [2021-11-23 12:25:32,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 18215 states and 30465 transitions. [2021-11-23 12:25:32,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 12:25:32,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:32,027 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] [2021-11-23 12:25:32,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:25:32,028 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:32,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1971995790, now seen corresponding path program 1 times [2021-11-23 12:25:32,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:32,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720395508] [2021-11-23 12:25:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:32,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:32,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:32,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720395508] [2021-11-23 12:25:32,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720395508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:32,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:32,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:25:32,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361301607] [2021-11-23 12:25:32,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:32,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:25:32,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:25:32,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:25:32,219 INFO L87 Difference]: Start difference. First operand 18215 states and 30465 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:34,707 INFO L93 Difference]: Finished difference Result 53760 states and 89952 transitions. [2021-11-23 12:25:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:25:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-23 12:25:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:34,844 INFO L225 Difference]: With dead ends: 53760 [2021-11-23 12:25:34,844 INFO L226 Difference]: Without dead ends: 36093 [2021-11-23 12:25:34,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:25:34,884 INFO L933 BasicCegarLoop]: 1331 mSDtfsCounter, 1085 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:34,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 4309 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:25:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36093 states. [2021-11-23 12:25:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36093 to 27106. [2021-11-23 12:25:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27106 states, 27105 states have (on average 1.6703560228740084) internal successors, (45275), 27105 states have internal predecessors, (45275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27106 states to 27106 states and 45275 transitions. [2021-11-23 12:25:37,177 INFO L78 Accepts]: Start accepts. Automaton has 27106 states and 45275 transitions. Word has length 235 [2021-11-23 12:25:37,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:37,178 INFO L470 AbstractCegarLoop]: Abstraction has 27106 states and 45275 transitions. [2021-11-23 12:25:37,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 27106 states and 45275 transitions. [2021-11-23 12:25:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 12:25:37,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:37,201 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] [2021-11-23 12:25:37,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:25:37,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1509627090, now seen corresponding path program 1 times [2021-11-23 12:25:37,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:37,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450120889] [2021-11-23 12:25:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:37,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:37,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:37,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450120889] [2021-11-23 12:25:37,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450120889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:37,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:37,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:37,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222928066] [2021-11-23 12:25:37,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:37,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:37,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:37,396 INFO L87 Difference]: Start difference. First operand 27106 states and 45275 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:40,065 INFO L93 Difference]: Finished difference Result 54646 states and 91274 transitions. [2021-11-23 12:25:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:40,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-23 12:25:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:40,207 INFO L225 Difference]: With dead ends: 54646 [2021-11-23 12:25:40,207 INFO L226 Difference]: Without dead ends: 40604 [2021-11-23 12:25:40,240 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 [2021-11-23 12:25:40,241 INFO L933 BasicCegarLoop]: 1377 mSDtfsCounter, 316 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:40,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2663 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:40,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40604 states. [2021-11-23 12:25:42,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40604 to 40602. [2021-11-23 12:25:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40602 states, 40601 states have (on average 1.6652791803157558) internal successors, (67612), 40601 states have internal predecessors, (67612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40602 states to 40602 states and 67612 transitions. [2021-11-23 12:25:43,068 INFO L78 Accepts]: Start accepts. Automaton has 40602 states and 67612 transitions. Word has length 235 [2021-11-23 12:25:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:43,069 INFO L470 AbstractCegarLoop]: Abstraction has 40602 states and 67612 transitions. [2021-11-23 12:25:43,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 40602 states and 67612 transitions. [2021-11-23 12:25:43,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 12:25:43,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:43,088 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] [2021-11-23 12:25:43,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:25:43,089 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2133047208, now seen corresponding path program 1 times [2021-11-23 12:25:43,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:43,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502240808] [2021-11-23 12:25:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:43,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:43,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502240808] [2021-11-23 12:25:43,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502240808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:43,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:43,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:43,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341955054] [2021-11-23 12:25:43,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:43,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:43,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:43,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:43,282 INFO L87 Difference]: Start difference. First operand 40602 states and 67612 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:46,452 INFO L93 Difference]: Finished difference Result 76318 states and 127230 transitions. [2021-11-23 12:25:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:46,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-23 12:25:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:46,622 INFO L225 Difference]: With dead ends: 76318 [2021-11-23 12:25:46,622 INFO L226 Difference]: Without dead ends: 55948 [2021-11-23 12:25:46,668 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 [2021-11-23 12:25:46,670 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 324 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:46,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2729 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55948 states. [2021-11-23 12:25:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55948 to 55946. [2021-11-23 12:25:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55946 states, 55945 states have (on average 1.6621682009116097) internal successors, (92990), 55945 states have internal predecessors, (92990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55946 states to 55946 states and 92990 transitions. [2021-11-23 12:25:50,160 INFO L78 Accepts]: Start accepts. Automaton has 55946 states and 92990 transitions. Word has length 235 [2021-11-23 12:25:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:50,161 INFO L470 AbstractCegarLoop]: Abstraction has 55946 states and 92990 transitions. [2021-11-23 12:25:50,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 55946 states and 92990 transitions. [2021-11-23 12:25:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 12:25:50,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:50,177 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] [2021-11-23 12:25:50,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:25:50,177 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:25:50,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash -678490366, now seen corresponding path program 1 times [2021-11-23 12:25:50,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:50,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915376308] [2021-11-23 12:25:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:50,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:50,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:50,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915376308] [2021-11-23 12:25:50,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915376308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:50,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:50,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:25:50,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010713876] [2021-11-23 12:25:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:50,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:25:50,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:25:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:25:50,330 INFO L87 Difference]: Start difference. First operand 55946 states and 92990 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:54,622 INFO L93 Difference]: Finished difference Result 106062 states and 176530 transitions. [2021-11-23 12:25:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:25:54,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-23 12:25:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:54,953 INFO L225 Difference]: With dead ends: 106062 [2021-11-23 12:25:54,954 INFO L226 Difference]: Without dead ends: 77214 [2021-11-23 12:25:54,987 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 [2021-11-23 12:25:54,988 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 332 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:54,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2795 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:25:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77214 states. [2021-11-23 12:25:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77214 to 77212. [2021-11-23 12:25:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77212 states, 77211 states have (on average 1.6601002447837743) internal successors, (128178), 77211 states have internal predecessors, (128178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77212 states to 77212 states and 128178 transitions. [2021-11-23 12:26:00,064 INFO L78 Accepts]: Start accepts. Automaton has 77212 states and 128178 transitions. Word has length 235 [2021-11-23 12:26:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:26:00,065 INFO L470 AbstractCegarLoop]: Abstraction has 77212 states and 128178 transitions. [2021-11-23 12:26:00,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 77212 states and 128178 transitions. [2021-11-23 12:26:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 12:26:00,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:26:00,093 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] [2021-11-23 12:26:00,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:26:00,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:26:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1764769580, now seen corresponding path program 1 times [2021-11-23 12:26:00,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:00,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65095537] [2021-11-23 12:26:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:00,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:00,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:00,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65095537] [2021-11-23 12:26:00,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65095537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:00,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:00,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:26:00,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386302944] [2021-11-23 12:26:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:00,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:26:00,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:26:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:26:00,260 INFO L87 Difference]: Start difference. First operand 77212 states and 128178 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:26:06,664 INFO L93 Difference]: Finished difference Result 168678 states and 280222 transitions. [2021-11-23 12:26:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:26:06,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-23 12:26:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:26:06,986 INFO L225 Difference]: With dead ends: 168678 [2021-11-23 12:26:06,987 INFO L226 Difference]: Without dead ends: 116273 [2021-11-23 12:26:07,047 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 [2021-11-23 12:26:07,049 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 340 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:26:07,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2860 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:26:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116273 states. [2021-11-23 12:26:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116273 to 116271. [2021-11-23 12:26:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116271 states, 116270 states have (on average 1.65626558871592) internal successors, (192574), 116270 states have internal predecessors, (192574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116271 states to 116271 states and 192574 transitions. [2021-11-23 12:26:13,946 INFO L78 Accepts]: Start accepts. Automaton has 116271 states and 192574 transitions. Word has length 235 [2021-11-23 12:26:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:26:13,947 INFO L470 AbstractCegarLoop]: Abstraction has 116271 states and 192574 transitions. [2021-11-23 12:26:13,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 116271 states and 192574 transitions.