./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3fea2f68f947d5e58136ef35d3f027c4c03d3bc0c134cd3fe1f5c31a7ea21160 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:26:04,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:26:04,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:26:04,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:26:04,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:26:04,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:26:04,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:26:04,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:26:04,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:26:04,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:26:04,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:26:04,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:26:04,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:26:04,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:26:04,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:26:04,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:26:04,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:26:04,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:26:04,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:26:04,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:26:04,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:26:04,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:26:04,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:26:04,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:26:04,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:26:04,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:26:04,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:26:04,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:26:04,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:26:04,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:26:04,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:26:04,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:26:04,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:26:04,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:26:04,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:26:04,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:26:04,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:26:04,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:26:04,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:26:04,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:26:04,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:26:04,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:26:04,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:26:04,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:26:04,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:26:04,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:26:04,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:26:04,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:26:04,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:26:04,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:26:04,493 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:26:04,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:26:04,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:26:04,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:26:04,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:26:04,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:26:04,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:26:04,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:26:04,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:26:04,494 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:26:04,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:26:04,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:26:04,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:26:04,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:26:04,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:26:04,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:26:04,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:26:04,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:26:04,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:26:04,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:26:04,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:26:04,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:26:04,496 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:26:04,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:26:04,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:26:04,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:26:04,496 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_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fea2f68f947d5e58136ef35d3f027c4c03d3bc0c134cd3fe1f5c31a7ea21160 [2021-12-06 22:26:04,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:26:04,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:26:04,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:26:04,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:26:04,700 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:26:04,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-06 22:26:04,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/data/d9adb7828/9fb132b18989477da46baa49e0e1d9dc/FLAGf2ea216a6 [2021-12-06 22:26:05,295 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:26:05,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-06 22:26:05,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/data/d9adb7828/9fb132b18989477da46baa49e0e1d9dc/FLAGf2ea216a6 [2021-12-06 22:26:05,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/data/d9adb7828/9fb132b18989477da46baa49e0e1d9dc [2021-12-06 22:26:05,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:26:05,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:26:05,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:26:05,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:26:05,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:26:05,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:26:05" (1/1) ... [2021-12-06 22:26:05,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccb0e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:05, skipping insertion in model container [2021-12-06 22:26:05,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:26:05" (1/1) ... [2021-12-06 22:26:05,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:26:05,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:26:06,182 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_541a174f-6b19-4324-9a6c-a83ee056747c/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[26962,26975] [2021-12-06 22:26:06,217 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_541a174f-6b19-4324-9a6c-a83ee056747c/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[33898,33911] [2021-12-06 22:26:06,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:26:06,727 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:26:06,758 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_541a174f-6b19-4324-9a6c-a83ee056747c/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[26962,26975] [2021-12-06 22:26:06,767 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_541a174f-6b19-4324-9a6c-a83ee056747c/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[33898,33911] [2021-12-06 22:26:07,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:26:07,214 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:26:07,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07 WrapperNode [2021-12-06 22:26:07,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:26:07,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:26:07,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:26:07,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:26:07,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,526 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5277 [2021-12-06 22:26:07,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:26:07,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:26:07,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:26:07,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:26:07,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:26:07,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:26:07,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:26:07,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:26:07,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (1/1) ... [2021-12-06 22:26:07,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:26:07,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:07,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:26:07,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:26:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:26:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:26:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:26:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:26:08,091 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:26:08,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:26:11,053 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:26:11,071 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:26:11,072 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 22:26:11,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:26:11 BoogieIcfgContainer [2021-12-06 22:26:11,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:26:11,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:26:11,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:26:11,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:26:11,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:26:05" (1/3) ... [2021-12-06 22:26:11,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cb57e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:26:11, skipping insertion in model container [2021-12-06 22:26:11,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:07" (2/3) ... [2021-12-06 22:26:11,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cb57e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:26:11, skipping insertion in model container [2021-12-06 22:26:11,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:26:11" (3/3) ... [2021-12-06 22:26:11,083 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-06 22:26:11,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:26:11,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 22:26:11,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:26:11,136 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:26:11,136 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 22:26:11,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 22:26:11,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:11,176 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] [2021-12-06 22:26:11,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2021-12-06 22:26:11,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:11,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354542303] [2021-12-06 22:26:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:11,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:11,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354542303] [2021-12-06 22:26:11,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354542303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:11,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:11,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:26:11,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916017589] [2021-12-06 22:26:11,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:11,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:26:11,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:26:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:26:11,436 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:11,508 INFO L93 Difference]: Finished difference Result 1857 states and 3510 transitions. [2021-12-06 22:26:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:26:11,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-06 22:26:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:11,530 INFO L225 Difference]: With dead ends: 1857 [2021-12-06 22:26:11,530 INFO L226 Difference]: Without dead ends: 897 [2021-12-06 22:26:11,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:26:11,539 INFO L933 BasicCegarLoop]: 1752 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:11,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-06 22:26:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-06 22:26:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.8860335195530726) internal successors, (1688), 896 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1688 transitions. [2021-12-06 22:26:11,618 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1688 transitions. Word has length 46 [2021-12-06 22:26:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:11,619 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1688 transitions. [2021-12-06 22:26:11,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1688 transitions. [2021-12-06 22:26:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 22:26:11,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:11,622 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] [2021-12-06 22:26:11,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:26:11,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:11,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:11,623 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-06 22:26:11,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:11,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290994073] [2021-12-06 22:26:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:11,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:11,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290994073] [2021-12-06 22:26:11,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290994073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:11,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:11,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:26:11,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119051250] [2021-12-06 22:26:11,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:11,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:26:11,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:26:11,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:26:11,805 INFO L87 Difference]: Start difference. First operand 897 states and 1688 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:11,953 INFO L93 Difference]: Finished difference Result 977 states and 1813 transitions. [2021-12-06 22:26:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:26:11,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-06 22:26:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:11,958 INFO L225 Difference]: With dead ends: 977 [2021-12-06 22:26:11,958 INFO L226 Difference]: Without dead ends: 897 [2021-12-06 22:26:11,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:26:11,961 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:11,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-06 22:26:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-06 22:26:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.817877094972067) internal successors, (1627), 896 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1627 transitions. [2021-12-06 22:26:11,984 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1627 transitions. Word has length 46 [2021-12-06 22:26:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:11,984 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1627 transitions. [2021-12-06 22:26:11,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1627 transitions. [2021-12-06 22:26:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 22:26:11,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:11,987 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] [2021-12-06 22:26:11,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:26:11,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash 817411013, now seen corresponding path program 1 times [2021-12-06 22:26:11,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:11,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259546804] [2021-12-06 22:26:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:11,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:12,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:12,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259546804] [2021-12-06 22:26:12,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259546804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:12,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:12,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:12,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455985327] [2021-12-06 22:26:12,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:12,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:26:12,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:26:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:26:12,119 INFO L87 Difference]: Start difference. First operand 897 states and 1627 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:16,741 INFO L93 Difference]: Finished difference Result 3152 states and 5936 transitions. [2021-12-06 22:26:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:26:16,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-06 22:26:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:16,753 INFO L225 Difference]: With dead ends: 3152 [2021-12-06 22:26:16,753 INFO L226 Difference]: Without dead ends: 2399 [2021-12-06 22:26:16,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:26:16,756 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 2570 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:16,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 899 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-06 22:26:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-12-06 22:26:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2399. [2021-12-06 22:26:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2397 states have (on average 1.5031289111389237) internal successors, (3603), 2398 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3603 transitions. [2021-12-06 22:26:16,804 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3603 transitions. Word has length 60 [2021-12-06 22:26:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:16,804 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3603 transitions. [2021-12-06 22:26:16,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3603 transitions. [2021-12-06 22:26:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:26:16,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:16,807 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] [2021-12-06 22:26:16,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:26:16,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-06 22:26:16,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:16,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039363089] [2021-12-06 22:26:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:16,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:16,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:16,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039363089] [2021-12-06 22:26:16,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039363089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:16,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:16,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:16,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593302653] [2021-12-06 22:26:16,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:16,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:16,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:16,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:16,920 INFO L87 Difference]: Start difference. First operand 2399 states and 3603 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:16,963 INFO L93 Difference]: Finished difference Result 2545 states and 3835 transitions. [2021-12-06 22:26:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:16,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 22:26:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:16,978 INFO L225 Difference]: With dead ends: 2545 [2021-12-06 22:26:16,978 INFO L226 Difference]: Without dead ends: 2469 [2021-12-06 22:26:16,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:16,981 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 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 [2021-12-06 22:26:16,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-12-06 22:26:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-12-06 22:26:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2465 states have (on average 1.5058823529411764) internal successors, (3712), 2466 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3712 transitions. [2021-12-06 22:26:17,033 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3712 transitions. Word has length 106 [2021-12-06 22:26:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:17,034 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3712 transitions. [2021-12-06 22:26:17,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3712 transitions. [2021-12-06 22:26:17,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:26:17,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:17,036 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] [2021-12-06 22:26:17,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:26:17,036 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:17,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-06 22:26:17,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:17,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325433884] [2021-12-06 22:26:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:17,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:17,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:17,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325433884] [2021-12-06 22:26:17,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325433884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:17,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:17,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:17,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301757413] [2021-12-06 22:26:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:17,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:17,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:17,099 INFO L87 Difference]: Start difference. First operand 2467 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:17,132 INFO L93 Difference]: Finished difference Result 2743 states and 4152 transitions. [2021-12-06 22:26:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:17,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 22:26:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:17,144 INFO L225 Difference]: With dead ends: 2743 [2021-12-06 22:26:17,144 INFO L226 Difference]: Without dead ends: 2599 [2021-12-06 22:26:17,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:17,146 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 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 [2021-12-06 22:26:17,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-12-06 22:26:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2597. [2021-12-06 22:26:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2595 states have (on average 1.5102119460500962) internal successors, (3919), 2596 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3919 transitions. [2021-12-06 22:26:17,202 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3919 transitions. Word has length 106 [2021-12-06 22:26:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:17,203 INFO L470 AbstractCegarLoop]: Abstraction has 2597 states and 3919 transitions. [2021-12-06 22:26:17,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3919 transitions. [2021-12-06 22:26:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:26:17,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:17,204 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] [2021-12-06 22:26:17,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:26:17,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-06 22:26:17,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:17,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097301578] [2021-12-06 22:26:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:17,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:17,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:17,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097301578] [2021-12-06 22:26:17,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097301578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:17,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:17,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:17,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820933511] [2021-12-06 22:26:17,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:17,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:17,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:17,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:17,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:17,270 INFO L87 Difference]: Start difference. First operand 2597 states and 3919 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:17,318 INFO L93 Difference]: Finished difference Result 3121 states and 4753 transitions. [2021-12-06 22:26:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:17,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 22:26:17,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:17,335 INFO L225 Difference]: With dead ends: 3121 [2021-12-06 22:26:17,335 INFO L226 Difference]: Without dead ends: 2847 [2021-12-06 22:26:17,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:17,338 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 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 [2021-12-06 22:26:17,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-12-06 22:26:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2845. [2021-12-06 22:26:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2843 states have (on average 1.516355962011959) internal successors, (4311), 2844 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4311 transitions. [2021-12-06 22:26:17,425 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4311 transitions. Word has length 106 [2021-12-06 22:26:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:17,425 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 4311 transitions. [2021-12-06 22:26:17,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4311 transitions. [2021-12-06 22:26:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:26:17,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:17,428 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] [2021-12-06 22:26:17,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:26:17,428 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-06 22:26:17,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:17,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419552198] [2021-12-06 22:26:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:17,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:17,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:17,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419552198] [2021-12-06 22:26:17,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419552198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:17,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:17,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:17,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535342536] [2021-12-06 22:26:17,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:17,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:17,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:17,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:17,515 INFO L87 Difference]: Start difference. First operand 2845 states and 4311 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:17,573 INFO L93 Difference]: Finished difference Result 3841 states and 5889 transitions. [2021-12-06 22:26:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 22:26:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:17,592 INFO L225 Difference]: With dead ends: 3841 [2021-12-06 22:26:17,592 INFO L226 Difference]: Without dead ends: 3319 [2021-12-06 22:26:17,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:17,595 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 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 [2021-12-06 22:26:17,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-12-06 22:26:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3317. [2021-12-06 22:26:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3315 states have (on average 1.5236802413273) internal successors, (5051), 3316 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 5051 transitions. [2021-12-06 22:26:17,700 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 5051 transitions. Word has length 106 [2021-12-06 22:26:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:17,701 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 5051 transitions. [2021-12-06 22:26:17,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 5051 transitions. [2021-12-06 22:26:17,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:26:17,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:17,703 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] [2021-12-06 22:26:17,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:26:17,703 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:17,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:17,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-06 22:26:17,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:17,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447220328] [2021-12-06 22:26:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:17,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:17,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:17,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447220328] [2021-12-06 22:26:17,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447220328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:17,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:17,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:26:17,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862487236] [2021-12-06 22:26:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:17,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:26:17,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:26:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:26:17,832 INFO L87 Difference]: Start difference. First operand 3317 states and 5051 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:18,459 INFO L93 Difference]: Finished difference Result 19221 states and 30155 transitions. [2021-12-06 22:26:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:26:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 22:26:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:18,513 INFO L225 Difference]: With dead ends: 19221 [2021-12-06 22:26:18,514 INFO L226 Difference]: Without dead ends: 18227 [2021-12-06 22:26:18,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:26:18,520 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:18,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18227 states. [2021-12-06 22:26:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18227 to 4309. [2021-12-06 22:26:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 4307 states have (on average 1.529370791734386) internal successors, (6587), 4308 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 6587 transitions. [2021-12-06 22:26:18,739 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 6587 transitions. Word has length 106 [2021-12-06 22:26:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:18,739 INFO L470 AbstractCegarLoop]: Abstraction has 4309 states and 6587 transitions. [2021-12-06 22:26:18,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 6587 transitions. [2021-12-06 22:26:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:26:18,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:18,741 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] [2021-12-06 22:26:18,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:26:18,741 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:18,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:18,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-06 22:26:18,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:18,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186605809] [2021-12-06 22:26:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:18,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:18,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:18,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186605809] [2021-12-06 22:26:18,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186605809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:18,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:18,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:18,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71688271] [2021-12-06 22:26:18,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:18,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:18,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:18,818 INFO L87 Difference]: Start difference. First operand 4309 states and 6587 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:18,941 INFO L93 Difference]: Finished difference Result 7251 states and 11183 transitions. [2021-12-06 22:26:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:18,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 22:26:18,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:18,949 INFO L225 Difference]: With dead ends: 7251 [2021-12-06 22:26:18,950 INFO L226 Difference]: Without dead ends: 5265 [2021-12-06 22:26:18,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:18,953 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:18,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-06 22:26:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-06 22:26:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5306975860102643) internal successors, (8053), 5262 states have internal predecessors, (8053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8053 transitions. [2021-12-06 22:26:19,102 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8053 transitions. Word has length 108 [2021-12-06 22:26:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:19,102 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8053 transitions. [2021-12-06 22:26:19,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8053 transitions. [2021-12-06 22:26:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:26:19,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:19,103 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] [2021-12-06 22:26:19,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:26:19,103 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-06 22:26:19,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793158410] [2021-12-06 22:26:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:19,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:19,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793158410] [2021-12-06 22:26:19,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793158410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:19,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:19,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:26:19,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548078625] [2021-12-06 22:26:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:19,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:26:19,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:26:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:26:19,305 INFO L87 Difference]: Start difference. First operand 5263 states and 8053 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:19,691 INFO L93 Difference]: Finished difference Result 8203 states and 12623 transitions. [2021-12-06 22:26:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:26:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 22:26:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:19,699 INFO L225 Difference]: With dead ends: 8203 [2021-12-06 22:26:19,699 INFO L226 Difference]: Without dead ends: 5265 [2021-12-06 22:26:19,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:26:19,702 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 12686 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12686 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:19,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12686 Valid, 2487 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-06 22:26:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-06 22:26:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5261357156434139) internal successors, (8029), 5262 states have internal predecessors, (8029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8029 transitions. [2021-12-06 22:26:19,837 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8029 transitions. Word has length 108 [2021-12-06 22:26:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:19,838 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8029 transitions. [2021-12-06 22:26:19,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8029 transitions. [2021-12-06 22:26:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:26:19,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:19,840 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] [2021-12-06 22:26:19,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:26:19,840 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-06 22:26:19,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:19,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162137826] [2021-12-06 22:26:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:19,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:19,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:19,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162137826] [2021-12-06 22:26:19,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162137826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:19,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:19,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:19,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992276264] [2021-12-06 22:26:19,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:19,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:19,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:19,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:19,887 INFO L87 Difference]: Start difference. First operand 5263 states and 8029 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:20,092 INFO L93 Difference]: Finished difference Result 10851 states and 16639 transitions. [2021-12-06 22:26:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 22:26:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:20,104 INFO L225 Difference]: With dead ends: 10851 [2021-12-06 22:26:20,104 INFO L226 Difference]: Without dead ends: 7913 [2021-12-06 22:26:20,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:20,108 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 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 [2021-12-06 22:26:20,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2021-12-06 22:26:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7911. [2021-12-06 22:26:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7911 states, 7909 states have (on average 1.5229485396383866) internal successors, (12045), 7910 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 12045 transitions. [2021-12-06 22:26:20,347 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 12045 transitions. Word has length 108 [2021-12-06 22:26:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:20,347 INFO L470 AbstractCegarLoop]: Abstraction has 7911 states and 12045 transitions. [2021-12-06 22:26:20,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 12045 transitions. [2021-12-06 22:26:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:26:20,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:20,349 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] [2021-12-06 22:26:20,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:26:20,349 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-06 22:26:20,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:20,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630987988] [2021-12-06 22:26:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:20,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:20,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:20,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630987988] [2021-12-06 22:26:20,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630987988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:20,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:20,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:20,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312416577] [2021-12-06 22:26:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:20,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:20,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:20,392 INFO L87 Difference]: Start difference. First operand 7911 states and 12045 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:20,753 INFO L93 Difference]: Finished difference Result 18507 states and 28207 transitions. [2021-12-06 22:26:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 22:26:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:20,768 INFO L225 Difference]: With dead ends: 18507 [2021-12-06 22:26:20,768 INFO L226 Difference]: Without dead ends: 12921 [2021-12-06 22:26:20,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:20,774 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 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 [2021-12-06 22:26:20,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12921 states. [2021-12-06 22:26:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12921 to 12919. [2021-12-06 22:26:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12919 states, 12917 states have (on average 1.5134319114345436) internal successors, (19549), 12918 states have internal predecessors, (19549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12919 states to 12919 states and 19549 transitions. [2021-12-06 22:26:21,225 INFO L78 Accepts]: Start accepts. Automaton has 12919 states and 19549 transitions. Word has length 108 [2021-12-06 22:26:21,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:21,225 INFO L470 AbstractCegarLoop]: Abstraction has 12919 states and 19549 transitions. [2021-12-06 22:26:21,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 12919 states and 19549 transitions. [2021-12-06 22:26:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:26:21,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:21,226 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] [2021-12-06 22:26:21,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:26:21,226 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:21,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:21,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-06 22:26:21,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:21,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923220969] [2021-12-06 22:26:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:21,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:21,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:21,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923220969] [2021-12-06 22:26:21,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923220969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:21,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:21,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:21,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147637550] [2021-12-06 22:26:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:21,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:21,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:21,267 INFO L87 Difference]: Start difference. First operand 12919 states and 19549 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:22,038 INFO L93 Difference]: Finished difference Result 32955 states and 49759 transitions. [2021-12-06 22:26:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 22:26:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:22,062 INFO L225 Difference]: With dead ends: 32955 [2021-12-06 22:26:22,062 INFO L226 Difference]: Without dead ends: 22361 [2021-12-06 22:26:22,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:22,074 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 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 [2021-12-06 22:26:22,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:22,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22361 states. [2021-12-06 22:26:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22361 to 22359. [2021-12-06 22:26:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22359 states, 22357 states have (on average 1.4984568591492597) internal successors, (33501), 22358 states have internal predecessors, (33501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22359 states to 22359 states and 33501 transitions. [2021-12-06 22:26:22,968 INFO L78 Accepts]: Start accepts. Automaton has 22359 states and 33501 transitions. Word has length 108 [2021-12-06 22:26:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:22,969 INFO L470 AbstractCegarLoop]: Abstraction has 22359 states and 33501 transitions. [2021-12-06 22:26:22,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 22359 states and 33501 transitions. [2021-12-06 22:26:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:26:22,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:22,970 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] [2021-12-06 22:26:22,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:26:22,970 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-06 22:26:22,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:22,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135235135] [2021-12-06 22:26:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:22,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:23,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:23,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135235135] [2021-12-06 22:26:23,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135235135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:23,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:23,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:23,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582418986] [2021-12-06 22:26:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:23,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:23,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:23,007 INFO L87 Difference]: Start difference. First operand 22359 states and 33501 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:24,511 INFO L93 Difference]: Finished difference Result 60123 states and 89695 transitions. [2021-12-06 22:26:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:24,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 22:26:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:24,550 INFO L225 Difference]: With dead ends: 60123 [2021-12-06 22:26:24,550 INFO L226 Difference]: Without dead ends: 40089 [2021-12-06 22:26:24,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:24,570 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 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 [2021-12-06 22:26:24,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:24,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40089 states. [2021-12-06 22:26:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40089 to 40087. [2021-12-06 22:26:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40087 states, 40085 states have (on average 1.4791817388050392) internal successors, (59293), 40086 states have internal predecessors, (59293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40087 states to 40087 states and 59293 transitions. [2021-12-06 22:26:26,321 INFO L78 Accepts]: Start accepts. Automaton has 40087 states and 59293 transitions. Word has length 108 [2021-12-06 22:26:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:26,321 INFO L470 AbstractCegarLoop]: Abstraction has 40087 states and 59293 transitions. [2021-12-06 22:26:26,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 40087 states and 59293 transitions. [2021-12-06 22:26:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 22:26:26,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:26,322 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] [2021-12-06 22:26:26,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:26:26,323 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:26,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-06 22:26:26,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:26,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581000568] [2021-12-06 22:26:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:26,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:26,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:26,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581000568] [2021-12-06 22:26:26,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581000568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:26,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:26:26,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777857906] [2021-12-06 22:26:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:26,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:26:26,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:26,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:26:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:26:26,384 INFO L87 Difference]: Start difference. First operand 40087 states and 59293 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:29,544 INFO L93 Difference]: Finished difference Result 72254 states and 105870 transitions. [2021-12-06 22:26:29,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:26:29,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-06 22:26:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:29,617 INFO L225 Difference]: With dead ends: 72254 [2021-12-06 22:26:29,617 INFO L226 Difference]: Without dead ends: 72252 [2021-12-06 22:26:29,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:26:29,630 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:29,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72252 states. [2021-12-06 22:26:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72252 to 41623. [2021-12-06 22:26:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41623 states, 41621 states have (on average 1.4584224309843588) internal successors, (60701), 41622 states have internal predecessors, (60701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41623 states to 41623 states and 60701 transitions. [2021-12-06 22:26:32,073 INFO L78 Accepts]: Start accepts. Automaton has 41623 states and 60701 transitions. Word has length 109 [2021-12-06 22:26:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:32,073 INFO L470 AbstractCegarLoop]: Abstraction has 41623 states and 60701 transitions. [2021-12-06 22:26:32,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 41623 states and 60701 transitions. [2021-12-06 22:26:32,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 22:26:32,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:32,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:32,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:26:32,076 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash 6638733, now seen corresponding path program 1 times [2021-12-06 22:26:32,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:32,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483911268] [2021-12-06 22:26:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:32,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:32,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:32,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483911268] [2021-12-06 22:26:32,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483911268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:32,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:32,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:32,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371622403] [2021-12-06 22:26:32,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:32,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:26:32,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:26:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:26:32,153 INFO L87 Difference]: Start difference. First operand 41623 states and 60701 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:36,798 INFO L93 Difference]: Finished difference Result 45417 states and 66806 transitions. [2021-12-06 22:26:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:26:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-12-06 22:26:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:36,841 INFO L225 Difference]: With dead ends: 45417 [2021-12-06 22:26:36,841 INFO L226 Difference]: Without dead ends: 43125 [2021-12-06 22:26:36,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:26:36,852 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 892 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:36,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1083 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 22:26:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43125 states. [2021-12-06 22:26:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43125 to 43125. [2021-12-06 22:26:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43125 states, 43123 states have (on average 1.4443800292187463) internal successors, (62286), 43124 states have internal predecessors, (62286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43125 states to 43125 states and 62286 transitions. [2021-12-06 22:26:38,981 INFO L78 Accepts]: Start accepts. Automaton has 43125 states and 62286 transitions. Word has length 131 [2021-12-06 22:26:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:38,982 INFO L470 AbstractCegarLoop]: Abstraction has 43125 states and 62286 transitions. [2021-12-06 22:26:38,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 43125 states and 62286 transitions. [2021-12-06 22:26:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:26:39,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:39,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:39,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:26:39,007 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:39,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:39,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-06 22:26:39,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:39,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678277343] [2021-12-06 22:26:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:39,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:26:39,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:39,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678277343] [2021-12-06 22:26:39,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678277343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:39,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:39,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:26:39,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64708641] [2021-12-06 22:26:39,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:39,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:26:39,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:39,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:26:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:26:39,104 INFO L87 Difference]: Start difference. First operand 43125 states and 62286 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:54,007 INFO L93 Difference]: Finished difference Result 365063 states and 530583 transitions. [2021-12-06 22:26:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:26:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 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 149 [2021-12-06 22:26:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:54,418 INFO L225 Difference]: With dead ends: 365063 [2021-12-06 22:26:54,418 INFO L226 Difference]: Without dead ends: 325765 [2021-12-06 22:26:54,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:26:54,586 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 12958 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12958 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:54,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12958 Valid, 4365 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:54,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325765 states. [2021-12-06 22:27:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325765 to 82421. [2021-12-06 22:27:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82421 states, 82419 states have (on average 1.4452735412950897) internal successors, (119118), 82420 states have internal predecessors, (119118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82421 states to 82421 states and 119118 transitions. [2021-12-06 22:27:00,394 INFO L78 Accepts]: Start accepts. Automaton has 82421 states and 119118 transitions. Word has length 149 [2021-12-06 22:27:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:00,394 INFO L470 AbstractCegarLoop]: Abstraction has 82421 states and 119118 transitions. [2021-12-06 22:27:00,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 82421 states and 119118 transitions. [2021-12-06 22:27:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:27:00,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:00,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:00,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:27:00,412 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1273280147, now seen corresponding path program 1 times [2021-12-06 22:27:00,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:00,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96055938] [2021-12-06 22:27:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:00,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 22:27:00,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96055938] [2021-12-06 22:27:00,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96055938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:00,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:00,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:27:00,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598406921] [2021-12-06 22:27:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:00,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:27:00,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:27:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:27:00,501 INFO L87 Difference]: Start difference. First operand 82421 states and 119118 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:19,110 INFO L93 Difference]: Finished difference Result 404359 states and 587415 transitions. [2021-12-06 22:27:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:27:19,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 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 149 [2021-12-06 22:27:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:19,559 INFO L225 Difference]: With dead ends: 404359 [2021-12-06 22:27:19,559 INFO L226 Difference]: Without dead ends: 365061 [2021-12-06 22:27:19,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:27:19,636 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 12609 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12609 SdHoareTripleChecker+Valid, 4428 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:19,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12609 Valid, 4428 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:27:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365061 states. [2021-12-06 22:27:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365061 to 141429. [2021-12-06 22:27:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141429 states, 141427 states have (on average 1.442765525677558) internal successors, (204046), 141428 states have internal predecessors, (204046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141429 states to 141429 states and 204046 transitions. [2021-12-06 22:27:29,492 INFO L78 Accepts]: Start accepts. Automaton has 141429 states and 204046 transitions. Word has length 149 [2021-12-06 22:27:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:29,492 INFO L470 AbstractCegarLoop]: Abstraction has 141429 states and 204046 transitions. [2021-12-06 22:27:29,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 141429 states and 204046 transitions. [2021-12-06 22:27:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:27:29,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:29,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:29,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:27:29,514 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:29,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1546967859, now seen corresponding path program 1 times [2021-12-06 22:27:29,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:29,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203111287] [2021-12-06 22:27:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:29,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:27:29,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:29,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203111287] [2021-12-06 22:27:29,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203111287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:29,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:29,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:27:29,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255771037] [2021-12-06 22:27:29,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:29,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:27:29,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:29,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:27:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:27:29,600 INFO L87 Difference]: Start difference. First operand 141429 states and 204046 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:52,495 INFO L93 Difference]: Finished difference Result 443655 states and 644247 transitions. [2021-12-06 22:27:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:27:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 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 149 [2021-12-06 22:27:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:53,051 INFO L225 Difference]: With dead ends: 443655 [2021-12-06 22:27:53,051 INFO L226 Difference]: Without dead ends: 404357 [2021-12-06 22:27:53,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:27:53,127 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 12453 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12453 SdHoareTripleChecker+Valid, 4492 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:53,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12453 Valid, 4492 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:27:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404357 states. [2021-12-06 22:28:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404357 to 180725. [2021-12-06 22:28:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180725 states, 180723 states have (on average 1.443524067218893) internal successors, (260878), 180724 states have internal predecessors, (260878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180725 states to 180725 states and 260878 transitions. [2021-12-06 22:28:06,576 INFO L78 Accepts]: Start accepts. Automaton has 180725 states and 260878 transitions. Word has length 149 [2021-12-06 22:28:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:06,576 INFO L470 AbstractCegarLoop]: Abstraction has 180725 states and 260878 transitions. [2021-12-06 22:28:06,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 180725 states and 260878 transitions. [2021-12-06 22:28:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:28:06,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:06,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:06,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:28:06,598 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash -928927789, now seen corresponding path program 1 times [2021-12-06 22:28:06,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:06,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454675555] [2021-12-06 22:28:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:06,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:28:06,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:06,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454675555] [2021-12-06 22:28:06,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454675555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:06,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:06,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:28:06,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997720567] [2021-12-06 22:28:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:06,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:28:06,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:06,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:28:06,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:28:06,700 INFO L87 Difference]: Start difference. First operand 180725 states and 260878 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:34,936 INFO L93 Difference]: Finished difference Result 482951 states and 701079 transitions. [2021-12-06 22:28:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:28:34,937 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 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 149 [2021-12-06 22:28:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:35,534 INFO L225 Difference]: With dead ends: 482951 [2021-12-06 22:28:35,534 INFO L226 Difference]: Without dead ends: 443653 [2021-12-06 22:28:35,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:28:35,614 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 12443 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12443 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:35,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12443 Valid, 4557 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:28:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443653 states. [2021-12-06 22:28:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443653 to 220021. [2021-12-06 22:28:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220021 states, 220019 states have (on average 1.4440116535390126) internal successors, (317710), 220020 states have internal predecessors, (317710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220021 states to 220021 states and 317710 transitions. [2021-12-06 22:28:53,220 INFO L78 Accepts]: Start accepts. Automaton has 220021 states and 317710 transitions. Word has length 149 [2021-12-06 22:28:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:53,221 INFO L470 AbstractCegarLoop]: Abstraction has 220021 states and 317710 transitions. [2021-12-06 22:28:53,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 220021 states and 317710 transitions. [2021-12-06 22:28:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:28:53,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:53,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:53,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:28:53,243 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:53,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:53,243 INFO L85 PathProgramCache]: Analyzing trace with hash -749521805, now seen corresponding path program 1 times [2021-12-06 22:28:53,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:53,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277721081] [2021-12-06 22:28:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:53,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:28:53,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:53,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277721081] [2021-12-06 22:28:53,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277721081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:53,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:53,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:28:53,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685316108] [2021-12-06 22:28:53,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:53,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:28:53,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:53,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:28:53,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:28:53,326 INFO L87 Difference]: Start difference. First operand 220021 states and 317710 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:28,633 INFO L93 Difference]: Finished difference Result 522247 states and 757911 transitions. [2021-12-06 22:29:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:29:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 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 149 [2021-12-06 22:29:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:29,320 INFO L225 Difference]: With dead ends: 522247 [2021-12-06 22:29:29,320 INFO L226 Difference]: Without dead ends: 482949 [2021-12-06 22:29:29,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:29:29,410 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 12547 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12547 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:29,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12547 Valid, 4573 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:29:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482949 states. [2021-12-06 22:29:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482949 to 259317. [2021-12-06 22:29:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259317 states, 259315 states have (on average 1.4443514644351465) internal successors, (374542), 259316 states have internal predecessors, (374542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259317 states to 259317 states and 374542 transitions. [2021-12-06 22:29:51,731 INFO L78 Accepts]: Start accepts. Automaton has 259317 states and 374542 transitions. Word has length 149 [2021-12-06 22:29:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:51,732 INFO L470 AbstractCegarLoop]: Abstraction has 259317 states and 374542 transitions. [2021-12-06 22:29:51,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 259317 states and 374542 transitions. [2021-12-06 22:29:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:29:51,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:51,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:29:51,753 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2060924919, now seen corresponding path program 1 times [2021-12-06 22:29:51,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:51,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731739003] [2021-12-06 22:29:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:51,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:29:51,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:51,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731739003] [2021-12-06 22:29:51,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731739003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:29:51,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:29:51,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:29:51,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169132900] [2021-12-06 22:29:51,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:29:51,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:29:51,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:29:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:29:51,828 INFO L87 Difference]: Start difference. First operand 259317 states and 374542 transitions. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:34,461 INFO L93 Difference]: Finished difference Result 561543 states and 814743 transitions. [2021-12-06 22:30:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:30:34,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 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 149 [2021-12-06 22:30:34,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:35,213 INFO L225 Difference]: With dead ends: 561543 [2021-12-06 22:30:35,213 INFO L226 Difference]: Without dead ends: 522245 [2021-12-06 22:30:35,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:30:35,312 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 12732 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12732 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:35,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12732 Valid, 4540 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522245 states. [2021-12-06 22:31:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522245 to 298613. [2021-12-06 22:31:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298613 states, 298611 states have (on average 1.4446018398518474) internal successors, (431374), 298612 states have internal predecessors, (431374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298613 states to 298613 states and 431374 transitions. [2021-12-06 22:31:02,525 INFO L78 Accepts]: Start accepts. Automaton has 298613 states and 431374 transitions. Word has length 149 [2021-12-06 22:31:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:02,525 INFO L470 AbstractCegarLoop]: Abstraction has 298613 states and 431374 transitions. [2021-12-06 22:31:02,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 298613 states and 431374 transitions. [2021-12-06 22:31:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:31:02,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:02,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:02,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:31:02,702 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:31:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1871709143, now seen corresponding path program 1 times [2021-12-06 22:31:02,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:31:02,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624973743] [2021-12-06 22:31:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:02,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:31:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:31:02,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:31:02,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624973743] [2021-12-06 22:31:02,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624973743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:02,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:02,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:31:02,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578364680] [2021-12-06 22:31:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:02,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:31:02,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:02,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:31:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:31:02,775 INFO L87 Difference]: Start difference. First operand 298613 states and 431374 transitions. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:54,194 INFO L93 Difference]: Finished difference Result 600839 states and 871575 transitions. [2021-12-06 22:31:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:31:54,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 149 [2021-12-06 22:31:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:54,995 INFO L225 Difference]: With dead ends: 600839 [2021-12-06 22:31:54,995 INFO L226 Difference]: Without dead ends: 561541 [2021-12-06 22:31:55,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:31:55,109 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 12913 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12913 SdHoareTripleChecker+Valid, 4509 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:55,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12913 Valid, 4509 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:31:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561541 states. [2021-12-06 22:32:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561541 to 337909. [2021-12-06 22:32:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337909 states, 337907 states have (on average 1.444793981776051) internal successors, (488206), 337908 states have internal predecessors, (488206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337909 states to 337909 states and 488206 transitions. [2021-12-06 22:32:28,349 INFO L78 Accepts]: Start accepts. Automaton has 337909 states and 488206 transitions. Word has length 149 [2021-12-06 22:32:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:28,350 INFO L470 AbstractCegarLoop]: Abstraction has 337909 states and 488206 transitions. [2021-12-06 22:32:28,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 337909 states and 488206 transitions. [2021-12-06 22:32:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:32:28,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:28,379 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:28,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:32:28,379 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:32:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2126520393, now seen corresponding path program 1 times [2021-12-06 22:32:28,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:32:28,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384509812] [2021-12-06 22:32:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:28,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:32:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:32:28,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:32:28,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384509812] [2021-12-06 22:32:28,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384509812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:32:28,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:32:28,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:32:28,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965354348] [2021-12-06 22:32:28,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:32:28,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:32:28,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:32:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:32:28,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:32:28,463 INFO L87 Difference]: Start difference. First operand 337909 states and 488206 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:33:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:28,278 INFO L93 Difference]: Finished difference Result 615815 states and 893335 transitions. [2021-12-06 22:33:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:33:28,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 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 149 [2021-12-06 22:33:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:29,241 INFO L225 Difference]: With dead ends: 615815 [2021-12-06 22:33:29,241 INFO L226 Difference]: Without dead ends: 588677 [2021-12-06 22:33:29,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:33:29,336 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 12910 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12910 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:29,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12910 Valid, 4389 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:33:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588677 states. [2021-12-06 22:34:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588677 to 365045. [2021-12-06 22:34:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365045 states, 365043 states have (on average 1.4453913648529078) internal successors, (527630), 365044 states have internal predecessors, (527630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:34:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365045 states to 365045 states and 527630 transitions. [2021-12-06 22:34:08,193 INFO L78 Accepts]: Start accepts. Automaton has 365045 states and 527630 transitions. Word has length 149 [2021-12-06 22:34:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:08,194 INFO L470 AbstractCegarLoop]: Abstraction has 365045 states and 527630 transitions. [2021-12-06 22:34:08,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:34:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 365045 states and 527630 transitions. [2021-12-06 22:34:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 22:34:08,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:08,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:34:08,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:34:08,227 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1444230139, now seen corresponding path program 1 times [2021-12-06 22:34:08,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:08,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840685697] [2021-12-06 22:34:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:08,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:34:08,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:08,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840685697] [2021-12-06 22:34:08,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840685697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:34:08,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:34:08,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:34:08,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74327311] [2021-12-06 22:34:08,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:34:08,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:34:08,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:34:08,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:34:08,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:34:08,274 INFO L87 Difference]: Start difference. First operand 365045 states and 527630 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:34:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:34:44,119 INFO L93 Difference]: Finished difference Result 726265 states and 1050192 transitions. [2021-12-06 22:34:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:34:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-06 22:34:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:34:44,574 INFO L225 Difference]: With dead ends: 726265 [2021-12-06 22:34:44,575 INFO L226 Difference]: Without dead ends: 365047 [2021-12-06 22:34:44,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:34:44,850 INFO L933 BasicCegarLoop]: 1640 mSDtfsCounter, 78 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:34:44,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3212 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:34:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365047 states. [2021-12-06 22:35:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365047 to 365045. [2021-12-06 22:35:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365045 states, 365043 states have (on average 1.4357486652257405) internal successors, (524110), 365044 states have internal predecessors, (524110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:35:22,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365045 states to 365045 states and 524110 transitions. [2021-12-06 22:35:22,518 INFO L78 Accepts]: Start accepts. Automaton has 365045 states and 524110 transitions. Word has length 150 [2021-12-06 22:35:22,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:22,519 INFO L470 AbstractCegarLoop]: Abstraction has 365045 states and 524110 transitions. [2021-12-06 22:35:22,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:35:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 365045 states and 524110 transitions. [2021-12-06 22:35:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 22:35:22,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:22,539 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:22,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 22:35:22,539 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:35:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash -471515343, now seen corresponding path program 1 times [2021-12-06 22:35:22,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:22,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082603514] [2021-12-06 22:35:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:22,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:22,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:22,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082603514] [2021-12-06 22:35:22,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082603514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:22,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:22,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:35:22,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499002926] [2021-12-06 22:35:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:22,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:35:22,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:35:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:35:22,582 INFO L87 Difference]: Start difference. First operand 365045 states and 524110 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:35:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:41,324 INFO L93 Difference]: Finished difference Result 545657 states and 783632 transitions. [2021-12-06 22:35:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:35:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-06 22:35:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:41,528 INFO L225 Difference]: With dead ends: 545657 [2021-12-06 22:35:41,529 INFO L226 Difference]: Without dead ends: 184439 [2021-12-06 22:35:41,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:35:41,650 INFO L933 BasicCegarLoop]: 1633 mSDtfsCounter, 74 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:41,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 3197 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:35:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184439 states. [2021-12-06 22:36:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184439 to 184437. [2021-12-06 22:36:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184437 states, 184435 states have (on average 1.4250548973893242) internal successors, (262830), 184436 states have internal predecessors, (262830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184437 states to 184437 states and 262830 transitions. [2021-12-06 22:36:00,919 INFO L78 Accepts]: Start accepts. Automaton has 184437 states and 262830 transitions. Word has length 150 [2021-12-06 22:36:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:00,919 INFO L470 AbstractCegarLoop]: Abstraction has 184437 states and 262830 transitions. [2021-12-06 22:36:00,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 184437 states and 262830 transitions. [2021-12-06 22:36:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 22:36:00,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:00,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:00,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 22:36:00,928 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1907840359, now seen corresponding path program 1 times [2021-12-06 22:36:00,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:00,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265566251] [2021-12-06 22:36:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:00,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:00,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265566251] [2021-12-06 22:36:00,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265566251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:00,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:36:00,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:36:00,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884455723] [2021-12-06 22:36:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:00,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:36:00,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:36:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:36:00,968 INFO L87 Difference]: Start difference. First operand 184437 states and 262830 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:10,331 INFO L93 Difference]: Finished difference Result 274745 states and 391712 transitions. [2021-12-06 22:36:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:36:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-06 22:36:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:10,434 INFO L225 Difference]: With dead ends: 274745 [2021-12-06 22:36:10,434 INFO L226 Difference]: Without dead ends: 94135 [2021-12-06 22:36:10,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:36:10,503 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 70 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:10,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 3182 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:36:10,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94135 states. [2021-12-06 22:36:19,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94135 to 94133. [2021-12-06 22:36:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94133 states, 94131 states have (on average 1.413668185826136) internal successors, (133070), 94132 states have internal predecessors, (133070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94133 states to 94133 states and 133070 transitions. [2021-12-06 22:36:20,140 INFO L78 Accepts]: Start accepts. Automaton has 94133 states and 133070 transitions. Word has length 150 [2021-12-06 22:36:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:20,140 INFO L470 AbstractCegarLoop]: Abstraction has 94133 states and 133070 transitions. [2021-12-06 22:36:20,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 94133 states and 133070 transitions. [2021-12-06 22:36:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 22:36:20,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:20,145 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:20,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 22:36:20,145 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:20,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:20,146 INFO L85 PathProgramCache]: Analyzing trace with hash -800524643, now seen corresponding path program 1 times [2021-12-06 22:36:20,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:20,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186555189] [2021-12-06 22:36:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:20,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:20,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:20,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186555189] [2021-12-06 22:36:20,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186555189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:20,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:36:20,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:36:20,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75609592] [2021-12-06 22:36:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:20,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:36:20,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:36:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:36:20,187 INFO L87 Difference]: Start difference. First operand 94133 states and 133070 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:24,859 INFO L93 Difference]: Finished difference Result 139289 states and 197072 transitions. [2021-12-06 22:36:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:36:24,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-06 22:36:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:24,904 INFO L225 Difference]: With dead ends: 139289 [2021-12-06 22:36:24,904 INFO L226 Difference]: Without dead ends: 48983 [2021-12-06 22:36:24,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:36:24,943 INFO L933 BasicCegarLoop]: 1619 mSDtfsCounter, 66 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:24,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 3167 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:36:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48983 states. [2021-12-06 22:36:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48983 to 48981. [2021-12-06 22:36:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48981 states, 48979 states have (on average 1.4012127646542396) internal successors, (68630), 48980 states have internal predecessors, (68630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48981 states to 48981 states and 68630 transitions. [2021-12-06 22:36:29,675 INFO L78 Accepts]: Start accepts. Automaton has 48981 states and 68630 transitions. Word has length 150 [2021-12-06 22:36:29,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:29,675 INFO L470 AbstractCegarLoop]: Abstraction has 48981 states and 68630 transitions. [2021-12-06 22:36:29,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:29,675 INFO L276 IsEmpty]: Start isEmpty. Operand 48981 states and 68630 transitions. [2021-12-06 22:36:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 22:36:29,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:29,679 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:29,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 22:36:29,679 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash -887643437, now seen corresponding path program 1 times [2021-12-06 22:36:29,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:29,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033252107] [2021-12-06 22:36:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:29,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:29,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:29,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033252107] [2021-12-06 22:36:29,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033252107] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:36:29,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400131545] [2021-12-06 22:36:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:29,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:29,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:29,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:36:29,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541a174f-6b19-4324-9a6c-a83ee056747c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:36:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:29,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:36:29,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:36:30,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:36:30,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400131545] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:30,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:36:30,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-12-06 22:36:30,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650421631] [2021-12-06 22:36:30,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:30,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 22:36:30,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 22:36:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:36:30,615 INFO L87 Difference]: Start difference. First operand 48981 states and 68630 transitions. Second operand has 18 states, 18 states have (on average 24.055555555555557) internal successors, (433), 18 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:37:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:37:38,956 INFO L93 Difference]: Finished difference Result 623703 states and 870199 transitions. [2021-12-06 22:37:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-12-06 22:37:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 24.055555555555557) internal successors, (433), 18 states have internal predecessors, (433), 0 states have call successors, (0), 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 150 [2021-12-06 22:37:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:37:39,799 INFO L225 Difference]: With dead ends: 623703 [2021-12-06 22:37:39,799 INFO L226 Difference]: Without dead ends: 578549 [2021-12-06 22:37:39,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5733 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2362, Invalid=12158, Unknown=0, NotChecked=0, Total=14520 [2021-12-06 22:37:39,899 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 22160 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22160 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:37:39,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22160 Valid, 8437 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:37:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578549 states.