./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:11:30,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:11:30,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:11:30,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:11:30,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:11:30,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:11:30,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:11:30,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:11:30,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:11:30,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:11:30,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:11:30,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:11:30,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:11:30,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:11:30,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:11:30,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:11:30,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:11:30,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:11:30,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:11:30,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:11:30,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:11:30,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:11:30,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:11:30,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:11:30,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:11:30,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:11:30,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:11:30,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:11:30,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:11:30,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:11:30,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:11:30,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:11:30,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:11:30,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:11:30,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:11:30,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:11:30,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:11:30,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:11:30,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:11:30,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:11:30,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:11:30,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:11:30,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:11:30,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:11:30,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:11:30,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:11:30,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:11:30,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:11:30,796 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:11:30,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:11:30,796 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:11:30,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:11:30,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:11:30,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:11:30,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:11:30,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:11:30,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:11:30,798 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:11:30,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:11:30,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:11:30,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:11:30,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:11:30,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:11:30,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:11:30,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:11:30,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:11:30,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:11:30,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:11:30,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:11:30,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:11:30,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:11:30,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:11:30,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:11:30,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:11:30,816 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_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb [2021-11-23 13:11:31,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:11:31,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:11:31,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:11:31,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:11:31,212 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:11:31,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2021-11-23 13:11:31,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/data/59836d784/940835566a5643118bce89be7bb38837/FLAG64b274a76 [2021-11-23 13:11:32,260 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:11:32,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2021-11-23 13:11:32,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/data/59836d784/940835566a5643118bce89be7bb38837/FLAG64b274a76 [2021-11-23 13:11:32,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/data/59836d784/940835566a5643118bce89be7bb38837 [2021-11-23 13:11:32,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:11:32,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:11:32,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:11:32,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:11:32,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:11:32,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:11:32" (1/1) ... [2021-11-23 13:11:32,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5933190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:32, skipping insertion in model container [2021-11-23 13:11:32,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:11:32" (1/1) ... [2021-11-23 13:11:32,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:11:32,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:11:35,181 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_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[380323,380336] [2021-11-23 13:11:35,216 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_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[383339,383352] [2021-11-23 13:11:35,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:11:35,489 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:11:36,740 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_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[380323,380336] [2021-11-23 13:11:36,746 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_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[383339,383352] [2021-11-23 13:11:36,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:11:36,897 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:11:36,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36 WrapperNode [2021-11-23 13:11:36,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:11:36,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:11:36,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:11:36,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:11:36,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:37,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:37,547 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 52, calls inlined = 105, statements flattened = 13765 [2021-11-23 13:11:37,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:11:37,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:11:37,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:11:37,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:11:37,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:37,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:37,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:37,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:37,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:37,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:38,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:38,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:11:38,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:11:38,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:11:38,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:11:38,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (1/1) ... [2021-11-23 13:11:38,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:11:38,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:11:38,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:11:38,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d114ca74-f8aa-43e2-acc3-5bc17c6d9c27/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:11:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:11:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:11:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:11:38,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:11:38,528 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:11:38,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:11:46,699 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:11:46,737 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:11:46,737 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-23 13:11:46,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:11:46 BoogieIcfgContainer [2021-11-23 13:11:46,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:11:46,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:11:46,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:11:46,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:11:46,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:11:32" (1/3) ... [2021-11-23 13:11:46,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5422ebad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:11:46, skipping insertion in model container [2021-11-23 13:11:46,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:11:36" (2/3) ... [2021-11-23 13:11:46,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5422ebad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:11:46, skipping insertion in model container [2021-11-23 13:11:46,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:11:46" (3/3) ... [2021-11-23 13:11:46,755 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.05.cil-2.c [2021-11-23 13:11:46,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:11:46,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 13:11:46,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:11:46,848 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:11:46,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 13:11:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 2744 states, 2740 states have (on average 1.802919708029197) internal successors, (4940), 2743 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:46,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:46,953 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] [2021-11-23 13:11:46,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -704536440, now seen corresponding path program 1 times [2021-11-23 13:11:46,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:46,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654330358] [2021-11-23 13:11:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:46,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:47,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:47,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654330358] [2021-11-23 13:11:47,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654330358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:47,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:47,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:11:47,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809012011] [2021-11-23 13:11:47,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:47,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:11:47,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:11:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:47,321 INFO L87 Difference]: Start difference. First operand has 2744 states, 2740 states have (on average 1.802919708029197) internal successors, (4940), 2743 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:47,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:47,708 INFO L93 Difference]: Finished difference Result 5910 states and 10522 transitions. [2021-11-23 13:11:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:11:47,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:47,760 INFO L225 Difference]: With dead ends: 5910 [2021-11-23 13:11:47,760 INFO L226 Difference]: Without dead ends: 3108 [2021-11-23 13:11:47,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:47,773 INFO L933 BasicCegarLoop]: 4874 mSDtfsCounter, 4777 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4777 SdHoareTripleChecker+Valid, 5577 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:47,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4777 Valid, 5577 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-23 13:11:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 3104. [2021-11-23 13:11:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7497581425346662) internal successors, (5426), 3103 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5426 transitions. [2021-11-23 13:11:47,981 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5426 transitions. Word has length 88 [2021-11-23 13:11:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:47,981 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5426 transitions. [2021-11-23 13:11:47,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5426 transitions. [2021-11-23 13:11:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:47,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:47,991 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] [2021-11-23 13:11:47,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:11:47,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:47,993 INFO L85 PathProgramCache]: Analyzing trace with hash -858645304, now seen corresponding path program 1 times [2021-11-23 13:11:47,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:47,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32202027] [2021-11-23 13:11:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:47,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:48,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:48,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32202027] [2021-11-23 13:11:48,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32202027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:48,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:48,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:11:48,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931141301] [2021-11-23 13:11:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:48,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:11:48,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:11:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:48,079 INFO L87 Difference]: Start difference. First operand 3104 states and 5426 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:48,200 INFO L93 Difference]: Finished difference Result 4074 states and 6874 transitions. [2021-11-23 13:11:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:11:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:48,222 INFO L225 Difference]: With dead ends: 4074 [2021-11-23 13:11:48,223 INFO L226 Difference]: Without dead ends: 3104 [2021-11-23 13:11:48,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:48,232 INFO L933 BasicCegarLoop]: 4778 mSDtfsCounter, 4770 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4770 SdHoareTripleChecker+Valid, 4778 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:48,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4770 Valid, 4778 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:11:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-11-23 13:11:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 3104. [2021-11-23 13:11:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.747178329571106) internal successors, (5418), 3103 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5418 transitions. [2021-11-23 13:11:48,493 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5418 transitions. Word has length 88 [2021-11-23 13:11:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:48,493 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5418 transitions. [2021-11-23 13:11:48,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5418 transitions. [2021-11-23 13:11:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:48,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:48,498 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] [2021-11-23 13:11:48,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:11:48,502 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:48,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 937498760, now seen corresponding path program 1 times [2021-11-23 13:11:48,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:48,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25079101] [2021-11-23 13:11:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:48,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:48,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:48,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25079101] [2021-11-23 13:11:48,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25079101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:48,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:48,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:11:48,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67021475] [2021-11-23 13:11:48,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:48,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:11:48,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:11:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:48,629 INFO L87 Difference]: Start difference. First operand 3104 states and 5418 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:48,727 INFO L93 Difference]: Finished difference Result 4073 states and 6857 transitions. [2021-11-23 13:11:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:11:48,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:48,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:48,748 INFO L225 Difference]: With dead ends: 4073 [2021-11-23 13:11:48,748 INFO L226 Difference]: Without dead ends: 3104 [2021-11-23 13:11:48,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:48,759 INFO L933 BasicCegarLoop]: 4773 mSDtfsCounter, 4764 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4764 SdHoareTripleChecker+Valid, 4773 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:48,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4764 Valid, 4773 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:11:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-11-23 13:11:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 3104. [2021-11-23 13:11:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.744598516607546) internal successors, (5410), 3103 states have internal predecessors, (5410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5410 transitions. [2021-11-23 13:11:48,864 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5410 transitions. Word has length 88 [2021-11-23 13:11:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:48,866 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5410 transitions. [2021-11-23 13:11:48,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5410 transitions. [2021-11-23 13:11:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:48,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:48,868 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] [2021-11-23 13:11:48,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:11:48,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:48,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1965270216, now seen corresponding path program 1 times [2021-11-23 13:11:48,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:48,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193670052] [2021-11-23 13:11:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:48,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:48,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:48,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193670052] [2021-11-23 13:11:48,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193670052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:48,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:48,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:48,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792348392] [2021-11-23 13:11:48,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:48,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:48,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:48,970 INFO L87 Difference]: Start difference. First operand 3104 states and 5410 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:49,177 INFO L93 Difference]: Finished difference Result 4985 states and 8188 transitions. [2021-11-23 13:11:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:49,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:49,204 INFO L225 Difference]: With dead ends: 4985 [2021-11-23 13:11:49,204 INFO L226 Difference]: Without dead ends: 4017 [2021-11-23 13:11:49,208 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 [2021-11-23 13:11:49,215 INFO L933 BasicCegarLoop]: 5473 mSDtfsCounter, 9530 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9530 SdHoareTripleChecker+Valid, 6180 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:49,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9530 Valid, 6180 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:11:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2021-11-23 13:11:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 3104. [2021-11-23 13:11:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7436310867462108) internal successors, (5407), 3103 states have internal predecessors, (5407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5407 transitions. [2021-11-23 13:11:49,341 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5407 transitions. Word has length 88 [2021-11-23 13:11:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:49,341 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5407 transitions. [2021-11-23 13:11:49,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5407 transitions. [2021-11-23 13:11:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:49,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:49,344 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] [2021-11-23 13:11:49,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:11:49,344 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:49,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 54227658, now seen corresponding path program 1 times [2021-11-23 13:11:49,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903250249] [2021-11-23 13:11:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:49,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:49,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:49,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903250249] [2021-11-23 13:11:49,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903250249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:49,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:49,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:49,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735955683] [2021-11-23 13:11:49,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:49,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:49,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:49,431 INFO L87 Difference]: Start difference. First operand 3104 states and 5407 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:49,628 INFO L93 Difference]: Finished difference Result 4983 states and 8177 transitions. [2021-11-23 13:11:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:49,652 INFO L225 Difference]: With dead ends: 4983 [2021-11-23 13:11:49,652 INFO L226 Difference]: Without dead ends: 4016 [2021-11-23 13:11:49,655 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 [2021-11-23 13:11:49,656 INFO L933 BasicCegarLoop]: 5468 mSDtfsCounter, 9525 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9525 SdHoareTripleChecker+Valid, 6172 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:49,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9525 Valid, 6172 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:11:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-11-23 13:11:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3104. [2021-11-23 13:11:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.742663656884876) internal successors, (5404), 3103 states have internal predecessors, (5404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5404 transitions. [2021-11-23 13:11:49,791 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5404 transitions. Word has length 88 [2021-11-23 13:11:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:49,793 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5404 transitions. [2021-11-23 13:11:49,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5404 transitions. [2021-11-23 13:11:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:49,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:49,799 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] [2021-11-23 13:11:49,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:11:49,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 131128456, now seen corresponding path program 1 times [2021-11-23 13:11:49,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:49,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905240721] [2021-11-23 13:11:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:49,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:49,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:49,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905240721] [2021-11-23 13:11:49,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905240721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:49,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:49,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:49,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154066838] [2021-11-23 13:11:49,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:49,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:49,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:49,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:49,881 INFO L87 Difference]: Start difference. First operand 3104 states and 5404 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:50,137 INFO L93 Difference]: Finished difference Result 4893 states and 8040 transitions. [2021-11-23 13:11:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:50,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:50,163 INFO L225 Difference]: With dead ends: 4893 [2021-11-23 13:11:50,163 INFO L226 Difference]: Without dead ends: 3928 [2021-11-23 13:11:50,167 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 [2021-11-23 13:11:50,168 INFO L933 BasicCegarLoop]: 5368 mSDtfsCounter, 9455 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9455 SdHoareTripleChecker+Valid, 6049 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:50,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9455 Valid, 6049 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2021-11-23 13:11:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3104. [2021-11-23 13:11:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7416962270235408) internal successors, (5401), 3103 states have internal predecessors, (5401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5401 transitions. [2021-11-23 13:11:50,336 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5401 transitions. Word has length 88 [2021-11-23 13:11:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:50,336 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5401 transitions. [2021-11-23 13:11:50,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5401 transitions. [2021-11-23 13:11:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:50,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:50,339 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] [2021-11-23 13:11:50,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:11:50,340 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2039586246, now seen corresponding path program 1 times [2021-11-23 13:11:50,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:50,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560581066] [2021-11-23 13:11:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:50,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:50,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:50,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560581066] [2021-11-23 13:11:50,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560581066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:50,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:50,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:50,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638065080] [2021-11-23 13:11:50,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:50,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:50,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:50,392 INFO L87 Difference]: Start difference. First operand 3104 states and 5401 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:50,758 INFO L93 Difference]: Finished difference Result 4889 states and 8027 transitions. [2021-11-23 13:11:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:50,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:50,797 INFO L225 Difference]: With dead ends: 4889 [2021-11-23 13:11:50,797 INFO L226 Difference]: Without dead ends: 3925 [2021-11-23 13:11:50,800 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 [2021-11-23 13:11:50,801 INFO L933 BasicCegarLoop]: 4866 mSDtfsCounter, 9958 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9958 SdHoareTripleChecker+Valid, 5544 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:50,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9958 Valid, 5544 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2021-11-23 13:11:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3104. [2021-11-23 13:11:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7407287971622056) internal successors, (5398), 3103 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5398 transitions. [2021-11-23 13:11:50,962 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5398 transitions. Word has length 88 [2021-11-23 13:11:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:50,964 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5398 transitions. [2021-11-23 13:11:50,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5398 transitions. [2021-11-23 13:11:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:50,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:50,966 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] [2021-11-23 13:11:50,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:11:50,966 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1546960072, now seen corresponding path program 1 times [2021-11-23 13:11:50,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:50,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306762210] [2021-11-23 13:11:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:50,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:51,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:51,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306762210] [2021-11-23 13:11:51,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306762210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:51,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:51,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:11:51,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611431005] [2021-11-23 13:11:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:51,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:11:51,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:51,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:11:51,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:51,029 INFO L87 Difference]: Start difference. First operand 3104 states and 5398 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:51,199 INFO L93 Difference]: Finished difference Result 4067 states and 6810 transitions. [2021-11-23 13:11:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:11:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:51,209 INFO L225 Difference]: With dead ends: 4067 [2021-11-23 13:11:51,209 INFO L226 Difference]: Without dead ends: 3104 [2021-11-23 13:11:51,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:51,213 INFO L933 BasicCegarLoop]: 4744 mSDtfsCounter, 4675 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 4802 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:51,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4675 Valid, 4802 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:11:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-11-23 13:11:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 3104. [2021-11-23 13:11:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7336343115124153) internal successors, (5376), 3103 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5376 transitions. [2021-11-23 13:11:51,382 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5376 transitions. Word has length 88 [2021-11-23 13:11:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:51,383 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5376 transitions. [2021-11-23 13:11:51,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5376 transitions. [2021-11-23 13:11:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:51,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:51,385 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] [2021-11-23 13:11:51,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:11:51,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1288884727, now seen corresponding path program 1 times [2021-11-23 13:11:51,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:51,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965790412] [2021-11-23 13:11:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:51,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:51,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:51,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965790412] [2021-11-23 13:11:51,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965790412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:51,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:51,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:51,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106169188] [2021-11-23 13:11:51,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:51,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:51,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:51,429 INFO L87 Difference]: Start difference. First operand 3104 states and 5376 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:51,735 INFO L93 Difference]: Finished difference Result 4887 states and 7954 transitions. [2021-11-23 13:11:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:51,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:51,746 INFO L225 Difference]: With dead ends: 4887 [2021-11-23 13:11:51,747 INFO L226 Difference]: Without dead ends: 3925 [2021-11-23 13:11:51,750 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 [2021-11-23 13:11:51,751 INFO L933 BasicCegarLoop]: 5334 mSDtfsCounter, 9419 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9419 SdHoareTripleChecker+Valid, 5997 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:51,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9419 Valid, 5997 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2021-11-23 13:11:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3104. [2021-11-23 13:11:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7326668816510804) internal successors, (5373), 3103 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5373 transitions. [2021-11-23 13:11:51,900 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5373 transitions. Word has length 88 [2021-11-23 13:11:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:51,901 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5373 transitions. [2021-11-23 13:11:51,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5373 transitions. [2021-11-23 13:11:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:51,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:51,903 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] [2021-11-23 13:11:51,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:11:51,904 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1789928843, now seen corresponding path program 1 times [2021-11-23 13:11:51,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:51,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305933753] [2021-11-23 13:11:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:51,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:51,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:51,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305933753] [2021-11-23 13:11:51,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305933753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:51,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:51,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:51,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271354173] [2021-11-23 13:11:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:51,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:51,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:51,940 INFO L87 Difference]: Start difference. First operand 3104 states and 5373 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:52,233 INFO L93 Difference]: Finished difference Result 4885 states and 7943 transitions. [2021-11-23 13:11:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:52,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:52,244 INFO L225 Difference]: With dead ends: 4885 [2021-11-23 13:11:52,244 INFO L226 Difference]: Without dead ends: 3924 [2021-11-23 13:11:52,247 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 [2021-11-23 13:11:52,248 INFO L933 BasicCegarLoop]: 5329 mSDtfsCounter, 9414 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9414 SdHoareTripleChecker+Valid, 5989 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:52,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9414 Valid, 5989 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3924 states. [2021-11-23 13:11:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3924 to 3104. [2021-11-23 13:11:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7316994517897453) internal successors, (5370), 3103 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5370 transitions. [2021-11-23 13:11:52,405 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5370 transitions. Word has length 88 [2021-11-23 13:11:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:52,405 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5370 transitions. [2021-11-23 13:11:52,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5370 transitions. [2021-11-23 13:11:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:52,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:52,408 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] [2021-11-23 13:11:52,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:11:52,408 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1057961417, now seen corresponding path program 1 times [2021-11-23 13:11:52,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:52,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648096522] [2021-11-23 13:11:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:52,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:52,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:52,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648096522] [2021-11-23 13:11:52,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648096522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:52,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:52,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:52,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421547571] [2021-11-23 13:11:52,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:52,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:52,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:52,444 INFO L87 Difference]: Start difference. First operand 3104 states and 5370 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:52,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:52,749 INFO L93 Difference]: Finished difference Result 4883 states and 7932 transitions. [2021-11-23 13:11:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:52,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:52,760 INFO L225 Difference]: With dead ends: 4883 [2021-11-23 13:11:52,760 INFO L226 Difference]: Without dead ends: 3923 [2021-11-23 13:11:52,763 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 [2021-11-23 13:11:52,764 INFO L933 BasicCegarLoop]: 5324 mSDtfsCounter, 9409 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9409 SdHoareTripleChecker+Valid, 5981 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:52,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9409 Valid, 5981 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2021-11-23 13:11:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3104. [2021-11-23 13:11:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 1.7307320219284101) internal successors, (5367), 3103 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5367 transitions. [2021-11-23 13:11:52,927 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5367 transitions. Word has length 88 [2021-11-23 13:11:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:52,928 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5367 transitions. [2021-11-23 13:11:52,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5367 transitions. [2021-11-23 13:11:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:52,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:52,930 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] [2021-11-23 13:11:52,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:11:52,931 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash -628218421, now seen corresponding path program 1 times [2021-11-23 13:11:52,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:52,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142790657] [2021-11-23 13:11:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:52,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:52,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:52,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142790657] [2021-11-23 13:11:52,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142790657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:52,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:52,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:11:52,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298206961] [2021-11-23 13:11:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:52,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:11:52,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:52,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:11:52,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:11:52,979 INFO L87 Difference]: Start difference. First operand 3104 states and 5367 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:53,483 INFO L93 Difference]: Finished difference Result 5831 states and 9268 transitions. [2021-11-23 13:11:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:11:53,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:53,495 INFO L225 Difference]: With dead ends: 5831 [2021-11-23 13:11:53,495 INFO L226 Difference]: Without dead ends: 4878 [2021-11-23 13:11:53,499 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 [2021-11-23 13:11:53,501 INFO L933 BasicCegarLoop]: 5411 mSDtfsCounter, 2406 mSDsluCounter, 15394 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 20805 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:53,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 20805 Invalid, 164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2021-11-23 13:11:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 3152. [2021-11-23 13:11:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 3149 states have (on average 1.7195935217529374) internal successors, (5415), 3151 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 5415 transitions. [2021-11-23 13:11:53,689 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 5415 transitions. Word has length 88 [2021-11-23 13:11:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:53,690 INFO L470 AbstractCegarLoop]: Abstraction has 3152 states and 5415 transitions. [2021-11-23 13:11:53,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 5415 transitions. [2021-11-23 13:11:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:11:53,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:53,692 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] [2021-11-23 13:11:53,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:11:53,693 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash -67518643, now seen corresponding path program 1 times [2021-11-23 13:11:53,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:53,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684737479] [2021-11-23 13:11:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:53,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:53,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:53,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684737479] [2021-11-23 13:11:53,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684737479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:53,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:53,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:11:53,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563093408] [2021-11-23 13:11:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:53,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:11:53,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:11:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:11:53,742 INFO L87 Difference]: Start difference. First operand 3152 states and 5415 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:54,159 INFO L93 Difference]: Finished difference Result 5831 states and 9189 transitions. [2021-11-23 13:11:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:11:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 13:11:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:54,170 INFO L225 Difference]: With dead ends: 5831 [2021-11-23 13:11:54,171 INFO L226 Difference]: Without dead ends: 4825 [2021-11-23 13:11:54,174 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 [2021-11-23 13:11:54,176 INFO L933 BasicCegarLoop]: 4807 mSDtfsCounter, 9830 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9830 SdHoareTripleChecker+Valid, 6443 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:54,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9830 Valid, 6443 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-11-23 13:11:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4661. [2021-11-23 13:11:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4658 states have (on average 1.6109918419922713) internal successors, (7504), 4660 states have internal predecessors, (7504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 7504 transitions. [2021-11-23 13:11:54,441 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 7504 transitions. Word has length 88 [2021-11-23 13:11:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:54,442 INFO L470 AbstractCegarLoop]: Abstraction has 4661 states and 7504 transitions. [2021-11-23 13:11:54,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 7504 transitions. [2021-11-23 13:11:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:11:54,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:54,445 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:54,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:11:54,445 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1152606641, now seen corresponding path program 1 times [2021-11-23 13:11:54,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:54,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975547829] [2021-11-23 13:11:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:54,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:11:54,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:54,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975547829] [2021-11-23 13:11:54,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975547829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:54,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:54,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:11:54,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408078198] [2021-11-23 13:11:54,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:54,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:11:54,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:11:54,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:11:54,511 INFO L87 Difference]: Start difference. First operand 4661 states and 7504 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:55,128 INFO L93 Difference]: Finished difference Result 8779 states and 13288 transitions. [2021-11-23 13:11:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:11:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:11:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:55,143 INFO L225 Difference]: With dead ends: 8779 [2021-11-23 13:11:55,143 INFO L226 Difference]: Without dead ends: 6274 [2021-11-23 13:11:55,149 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 [2021-11-23 13:11:55,150 INFO L933 BasicCegarLoop]: 4803 mSDtfsCounter, 2442 mSDsluCounter, 14676 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 19479 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:55,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2442 Valid, 19479 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2021-11-23 13:11:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 4706. [2021-11-23 13:11:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4703 states have (on average 1.5998298958111843) internal successors, (7524), 4705 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 7524 transitions. [2021-11-23 13:11:55,428 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 7524 transitions. Word has length 105 [2021-11-23 13:11:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:55,429 INFO L470 AbstractCegarLoop]: Abstraction has 4706 states and 7524 transitions. [2021-11-23 13:11:55,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:55,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 7524 transitions. [2021-11-23 13:11:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:11:55,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:55,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:55,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:11:55,432 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:55,433 INFO L85 PathProgramCache]: Analyzing trace with hash 755851149, now seen corresponding path program 1 times [2021-11-23 13:11:55,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:55,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914652643] [2021-11-23 13:11:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:55,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:11:55,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:55,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914652643] [2021-11-23 13:11:55,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914652643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:55,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:55,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:11:55,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661759332] [2021-11-23 13:11:55,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:55,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:11:55,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:11:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:11:55,494 INFO L87 Difference]: Start difference. First operand 4706 states and 7524 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:55,942 INFO L93 Difference]: Finished difference Result 8007 states and 12069 transitions. [2021-11-23 13:11:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:11:55,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:11:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:55,955 INFO L225 Difference]: With dead ends: 8007 [2021-11-23 13:11:55,956 INFO L226 Difference]: Without dead ends: 5464 [2021-11-23 13:11:55,963 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 [2021-11-23 13:11:55,965 INFO L933 BasicCegarLoop]: 4708 mSDtfsCounter, 2021 mSDsluCounter, 13280 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 17988 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:55,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2021 Valid, 17988 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2021-11-23 13:11:56,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4712. [2021-11-23 13:11:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4709 states have (on average 1.5909959651730727) internal successors, (7492), 4711 states have internal predecessors, (7492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 7492 transitions. [2021-11-23 13:11:56,250 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 7492 transitions. Word has length 105 [2021-11-23 13:11:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:56,251 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 7492 transitions. [2021-11-23 13:11:56,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 7492 transitions. [2021-11-23 13:11:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:11:56,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:56,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:56,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:11:56,254 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash 701458251, now seen corresponding path program 1 times [2021-11-23 13:11:56,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:56,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477508808] [2021-11-23 13:11:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:56,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:11:56,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:56,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477508808] [2021-11-23 13:11:56,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477508808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:56,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:56,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:11:56,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495736045] [2021-11-23 13:11:56,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:56,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:11:56,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:56,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:11:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:56,304 INFO L87 Difference]: Start difference. First operand 4712 states and 7492 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:56,806 INFO L93 Difference]: Finished difference Result 9450 states and 13967 transitions. [2021-11-23 13:11:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:11:56,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:11:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:56,822 INFO L225 Difference]: With dead ends: 9450 [2021-11-23 13:11:56,822 INFO L226 Difference]: Without dead ends: 6910 [2021-11-23 13:11:56,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:11:56,829 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 4599 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:56,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4599 Valid, 5375 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:11:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6910 states. [2021-11-23 13:11:57,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6910 to 6894. [2021-11-23 13:11:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6894 states, 6891 states have (on average 1.515309824408649) internal successors, (10442), 6893 states have internal predecessors, (10442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 10442 transitions. [2021-11-23 13:11:57,382 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 10442 transitions. Word has length 105 [2021-11-23 13:11:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:57,383 INFO L470 AbstractCegarLoop]: Abstraction has 6894 states and 10442 transitions. [2021-11-23 13:11:57,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 10442 transitions. [2021-11-23 13:11:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:11:57,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:57,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:57,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:11:57,386 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:57,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:57,387 INFO L85 PathProgramCache]: Analyzing trace with hash 709208810, now seen corresponding path program 1 times [2021-11-23 13:11:57,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:57,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175230161] [2021-11-23 13:11:57,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:57,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:11:57,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:57,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175230161] [2021-11-23 13:11:57,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175230161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:57,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:57,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:11:57,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340431727] [2021-11-23 13:11:57,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:57,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:11:57,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:57,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:11:57,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:11:57,437 INFO L87 Difference]: Start difference. First operand 6894 states and 10442 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:58,483 INFO L93 Difference]: Finished difference Result 15095 states and 21694 transitions. [2021-11-23 13:11:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:11:58,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:11:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:58,505 INFO L225 Difference]: With dead ends: 15095 [2021-11-23 13:11:58,506 INFO L226 Difference]: Without dead ends: 10377 [2021-11-23 13:11:58,515 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 [2021-11-23 13:11:58,516 INFO L933 BasicCegarLoop]: 4731 mSDtfsCounter, 1905 mSDsluCounter, 14583 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 19314 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:58,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 19314 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10377 states. [2021-11-23 13:11:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10377 to 7011. [2021-11-23 13:11:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7011 states, 7008 states have (on average 1.5018550228310503) internal successors, (10525), 7010 states have internal predecessors, (10525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 10525 transitions. [2021-11-23 13:11:58,951 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 10525 transitions. Word has length 105 [2021-11-23 13:11:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:58,952 INFO L470 AbstractCegarLoop]: Abstraction has 7011 states and 10525 transitions. [2021-11-23 13:11:58,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 10525 transitions. [2021-11-23 13:11:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:11:58,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:58,955 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:58,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:11:58,955 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2047418456, now seen corresponding path program 1 times [2021-11-23 13:11:58,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:58,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380803825] [2021-11-23 13:11:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:58,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:11:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:11:58,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:58,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380803825] [2021-11-23 13:11:58,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380803825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:58,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:58,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:11:58,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664520356] [2021-11-23 13:11:58,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:58,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:11:58,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:11:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:11:58,998 INFO L87 Difference]: Start difference. First operand 7011 states and 10525 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:00,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:00,173 INFO L93 Difference]: Finished difference Result 18054 states and 25545 transitions. [2021-11-23 13:12:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:12:00,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:00,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:00,202 INFO L225 Difference]: With dead ends: 18054 [2021-11-23 13:12:00,203 INFO L226 Difference]: Without dead ends: 13226 [2021-11-23 13:12:00,212 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 [2021-11-23 13:12:00,212 INFO L933 BasicCegarLoop]: 4776 mSDtfsCounter, 1716 mSDsluCounter, 14563 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 19339 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:00,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1716 Valid, 19339 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:12:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13226 states. [2021-11-23 13:12:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13226 to 7230. [2021-11-23 13:12:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7227 states have (on average 1.4866472948664728) internal successors, (10744), 7229 states have internal predecessors, (10744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 10744 transitions. [2021-11-23 13:12:00,689 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 10744 transitions. Word has length 105 [2021-11-23 13:12:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:00,690 INFO L470 AbstractCegarLoop]: Abstraction has 7230 states and 10744 transitions. [2021-11-23 13:12:00,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 10744 transitions. [2021-11-23 13:12:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:00,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:00,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:00,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:12:00,694 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash -119145754, now seen corresponding path program 1 times [2021-11-23 13:12:00,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:00,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756601844] [2021-11-23 13:12:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:00,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:12:00,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:00,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756601844] [2021-11-23 13:12:00,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756601844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:00,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:00,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:00,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701173023] [2021-11-23 13:12:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:00,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:00,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:00,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:00,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:00,733 INFO L87 Difference]: Start difference. First operand 7230 states and 10744 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:01,189 INFO L93 Difference]: Finished difference Result 12269 states and 17445 transitions. [2021-11-23 13:12:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:01,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:01,207 INFO L225 Difference]: With dead ends: 12269 [2021-11-23 13:12:01,207 INFO L226 Difference]: Without dead ends: 7230 [2021-11-23 13:12:01,216 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 [2021-11-23 13:12:01,216 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 9391 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9391 SdHoareTripleChecker+Valid, 4718 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:01,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9391 Valid, 4718 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2021-11-23 13:12:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7230. [2021-11-23 13:12:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7227 states have (on average 1.4831880448318804) internal successors, (10719), 7229 states have internal predecessors, (10719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 10719 transitions. [2021-11-23 13:12:01,922 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 10719 transitions. Word has length 105 [2021-11-23 13:12:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:01,922 INFO L470 AbstractCegarLoop]: Abstraction has 7230 states and 10719 transitions. [2021-11-23 13:12:01,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 10719 transitions. [2021-11-23 13:12:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:01,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:01,925 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:01,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:12:01,926 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash 304500968, now seen corresponding path program 1 times [2021-11-23 13:12:01,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:01,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111057082] [2021-11-23 13:12:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:01,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:12:01,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111057082] [2021-11-23 13:12:01,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111057082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:01,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:01,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:01,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83724193] [2021-11-23 13:12:01,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:01,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:01,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:01,969 INFO L87 Difference]: Start difference. First operand 7230 states and 10719 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:02,564 INFO L93 Difference]: Finished difference Result 12268 states and 17394 transitions. [2021-11-23 13:12:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:02,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:02,580 INFO L225 Difference]: With dead ends: 12268 [2021-11-23 13:12:02,580 INFO L226 Difference]: Without dead ends: 7230 [2021-11-23 13:12:02,589 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 [2021-11-23 13:12:02,590 INFO L933 BasicCegarLoop]: 4715 mSDtfsCounter, 9384 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9384 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:02,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9384 Valid, 4715 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2021-11-23 13:12:03,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7230. [2021-11-23 13:12:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7227 states have (on average 1.479728794797288) internal successors, (10694), 7229 states have internal predecessors, (10694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 10694 transitions. [2021-11-23 13:12:03,102 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 10694 transitions. Word has length 105 [2021-11-23 13:12:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:03,102 INFO L470 AbstractCegarLoop]: Abstraction has 7230 states and 10694 transitions. [2021-11-23 13:12:03,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 10694 transitions. [2021-11-23 13:12:03,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:03,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:03,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:03,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 13:12:03,105 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1067306330, now seen corresponding path program 1 times [2021-11-23 13:12:03,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:03,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36342650] [2021-11-23 13:12:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:03,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:12:03,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:03,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36342650] [2021-11-23 13:12:03,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36342650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:03,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:03,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:03,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402941207] [2021-11-23 13:12:03,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:03,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:03,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:03,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:03,142 INFO L87 Difference]: Start difference. First operand 7230 states and 10694 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:04,083 INFO L93 Difference]: Finished difference Result 18091 states and 24943 transitions. [2021-11-23 13:12:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:12:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:04,104 INFO L225 Difference]: With dead ends: 18091 [2021-11-23 13:12:04,104 INFO L226 Difference]: Without dead ends: 13054 [2021-11-23 13:12:04,113 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 [2021-11-23 13:12:04,114 INFO L933 BasicCegarLoop]: 4911 mSDtfsCounter, 9923 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9923 SdHoareTripleChecker+Valid, 5841 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:04,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9923 Valid, 5841 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13054 states. [2021-11-23 13:12:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13054 to 8017. [2021-11-23 13:12:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8017 states, 8014 states have (on average 1.449962565510357) internal successors, (11620), 8016 states have internal predecessors, (11620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8017 states to 8017 states and 11620 transitions. [2021-11-23 13:12:04,740 INFO L78 Accepts]: Start accepts. Automaton has 8017 states and 11620 transitions. Word has length 105 [2021-11-23 13:12:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:04,741 INFO L470 AbstractCegarLoop]: Abstraction has 8017 states and 11620 transitions. [2021-11-23 13:12:04,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8017 states and 11620 transitions. [2021-11-23 13:12:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:04,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:04,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:04,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 13:12:04,744 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1382293800, now seen corresponding path program 1 times [2021-11-23 13:12:04,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:04,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109203357] [2021-11-23 13:12:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:04,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:12:04,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:04,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109203357] [2021-11-23 13:12:04,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109203357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:04,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:04,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:04,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26158826] [2021-11-23 13:12:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:04,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:04,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:04,781 INFO L87 Difference]: Start difference. First operand 8017 states and 11620 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:05,800 INFO L93 Difference]: Finished difference Result 19015 states and 25938 transitions. [2021-11-23 13:12:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:12:05,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:05,816 INFO L225 Difference]: With dead ends: 19015 [2021-11-23 13:12:05,816 INFO L226 Difference]: Without dead ends: 13247 [2021-11-23 13:12:05,827 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 [2021-11-23 13:12:05,827 INFO L933 BasicCegarLoop]: 4744 mSDtfsCounter, 9873 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9873 SdHoareTripleChecker+Valid, 5490 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:05,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9873 Valid, 5490 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13247 states. [2021-11-23 13:12:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 7861. [2021-11-23 13:12:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 7858 states have (on average 1.4424790022906593) internal successors, (11335), 7860 states have internal predecessors, (11335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 11335 transitions. [2021-11-23 13:12:06,470 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 11335 transitions. Word has length 105 [2021-11-23 13:12:06,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:06,471 INFO L470 AbstractCegarLoop]: Abstraction has 7861 states and 11335 transitions. [2021-11-23 13:12:06,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 11335 transitions. [2021-11-23 13:12:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:06,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:06,473 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:06,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 13:12:06,473 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 352934502, now seen corresponding path program 1 times [2021-11-23 13:12:06,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:06,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042657989] [2021-11-23 13:12:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:06,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:12:06,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:06,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042657989] [2021-11-23 13:12:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042657989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:06,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:06,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:06,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521966146] [2021-11-23 13:12:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:06,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:06,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:06,511 INFO L87 Difference]: Start difference. First operand 7861 states and 11335 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:07,510 INFO L93 Difference]: Finished difference Result 18856 states and 25509 transitions. [2021-11-23 13:12:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:12:07,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:07,525 INFO L225 Difference]: With dead ends: 18856 [2021-11-23 13:12:07,525 INFO L226 Difference]: Without dead ends: 13191 [2021-11-23 13:12:07,533 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 [2021-11-23 13:12:07,533 INFO L933 BasicCegarLoop]: 4705 mSDtfsCounter, 9818 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9818 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9818 Valid, 5413 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:12:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13191 states. [2021-11-23 13:12:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13191 to 7861. [2021-11-23 13:12:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 7858 states have (on average 1.4298803766861796) internal successors, (11236), 7860 states have internal predecessors, (11236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 11236 transitions. [2021-11-23 13:12:08,227 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 11236 transitions. Word has length 105 [2021-11-23 13:12:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:08,228 INFO L470 AbstractCegarLoop]: Abstraction has 7861 states and 11236 transitions. [2021-11-23 13:12:08,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:08,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 11236 transitions. [2021-11-23 13:12:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:08,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:08,230 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:08,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 13:12:08,231 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash -491071000, now seen corresponding path program 1 times [2021-11-23 13:12:08,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:08,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960599899] [2021-11-23 13:12:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:08,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:12:08,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:08,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960599899] [2021-11-23 13:12:08,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960599899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:08,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:08,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:08,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007667628] [2021-11-23 13:12:08,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:08,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:08,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:08,267 INFO L87 Difference]: Start difference. First operand 7861 states and 11236 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:09,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:09,186 INFO L93 Difference]: Finished difference Result 18373 states and 24609 transitions. [2021-11-23 13:12:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:12:09,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:09,200 INFO L225 Difference]: With dead ends: 18373 [2021-11-23 13:12:09,201 INFO L226 Difference]: Without dead ends: 12765 [2021-11-23 13:12:09,208 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 [2021-11-23 13:12:09,209 INFO L933 BasicCegarLoop]: 4678 mSDtfsCounter, 9759 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9759 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:09,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9759 Valid, 5358 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12765 states. [2021-11-23 13:12:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12765 to 7744. [2021-11-23 13:12:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7744 states, 7741 states have (on average 1.4230719545278387) internal successors, (11016), 7743 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 11016 transitions. [2021-11-23 13:12:09,722 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 11016 transitions. Word has length 105 [2021-11-23 13:12:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:09,723 INFO L470 AbstractCegarLoop]: Abstraction has 7744 states and 11016 transitions. [2021-11-23 13:12:09,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 11016 transitions. [2021-11-23 13:12:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:09,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:09,725 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:09,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 13:12:09,726 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1559912998, now seen corresponding path program 1 times [2021-11-23 13:12:09,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:09,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795359630] [2021-11-23 13:12:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:09,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:12:09,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:09,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795359630] [2021-11-23 13:12:09,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795359630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:09,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:09,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:09,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678928691] [2021-11-23 13:12:09,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:09,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:09,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:09,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:09,769 INFO L87 Difference]: Start difference. First operand 7744 states and 11016 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:10,670 INFO L93 Difference]: Finished difference Result 15588 states and 20867 transitions. [2021-11-23 13:12:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:12:10,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:10,681 INFO L225 Difference]: With dead ends: 15588 [2021-11-23 13:12:10,681 INFO L226 Difference]: Without dead ends: 10072 [2021-11-23 13:12:10,686 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 [2021-11-23 13:12:10,687 INFO L933 BasicCegarLoop]: 4648 mSDtfsCounter, 9700 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9700 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:10,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9700 Valid, 5300 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2021-11-23 13:12:11,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 7504. [2021-11-23 13:12:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7504 states, 7501 states have (on average 1.4119450739901347) internal successors, (10591), 7503 states have internal predecessors, (10591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7504 states to 7504 states and 10591 transitions. [2021-11-23 13:12:11,232 INFO L78 Accepts]: Start accepts. Automaton has 7504 states and 10591 transitions. Word has length 105 [2021-11-23 13:12:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:11,233 INFO L470 AbstractCegarLoop]: Abstraction has 7504 states and 10591 transitions. [2021-11-23 13:12:11,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7504 states and 10591 transitions. [2021-11-23 13:12:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 13:12:11,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:11,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:11,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 13:12:11,235 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1487526440, now seen corresponding path program 1 times [2021-11-23 13:12:11,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:11,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129910918] [2021-11-23 13:12:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:11,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:11,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:11,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129910918] [2021-11-23 13:12:11,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129910918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:11,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:11,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:11,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003108346] [2021-11-23 13:12:11,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:11,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:12:11,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:12:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:11,270 INFO L87 Difference]: Start difference. First operand 7504 states and 10591 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:12,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:12,130 INFO L93 Difference]: Finished difference Result 17485 states and 22740 transitions. [2021-11-23 13:12:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:12,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-23 13:12:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:12,148 INFO L225 Difference]: With dead ends: 17485 [2021-11-23 13:12:12,148 INFO L226 Difference]: Without dead ends: 12230 [2021-11-23 13:12:12,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:12,155 INFO L933 BasicCegarLoop]: 4656 mSDtfsCounter, 4472 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 5340 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:12,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 5340 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2021-11-23 13:12:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 12230. [2021-11-23 13:12:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12230 states, 12227 states have (on average 1.3252637605299746) internal successors, (16204), 12229 states have internal predecessors, (16204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12230 states to 12230 states and 16204 transitions. [2021-11-23 13:12:13,123 INFO L78 Accepts]: Start accepts. Automaton has 12230 states and 16204 transitions. Word has length 105 [2021-11-23 13:12:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:13,123 INFO L470 AbstractCegarLoop]: Abstraction has 12230 states and 16204 transitions. [2021-11-23 13:12:13,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12230 states and 16204 transitions. [2021-11-23 13:12:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:12:13,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:13,125 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:12:13,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 13:12:13,126 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:13,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:13,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1194547042, now seen corresponding path program 1 times [2021-11-23 13:12:13,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:13,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375595766] [2021-11-23 13:12:13,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:13,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:13,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:13,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375595766] [2021-11-23 13:12:13,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375595766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:13,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:13,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:13,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42274514] [2021-11-23 13:12:13,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:13,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:12:13,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:12:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:13,162 INFO L87 Difference]: Start difference. First operand 12230 states and 16204 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) [2021-11-23 13:12:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:14,692 INFO L93 Difference]: Finished difference Result 30892 states and 38750 transitions. [2021-11-23 13:12:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:14,693 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 [2021-11-23 13:12:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:14,715 INFO L225 Difference]: With dead ends: 30892 [2021-11-23 13:12:14,715 INFO L226 Difference]: Without dead ends: 21034 [2021-11-23 13:12:14,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:14,726 INFO L933 BasicCegarLoop]: 4949 mSDtfsCounter, 4490 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:14,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4490 Valid, 5629 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21034 states. [2021-11-23 13:12:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21034 to 21030. [2021-11-23 13:12:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21030 states, 21027 states have (on average 1.2710324820468921) internal successors, (26726), 21029 states have internal predecessors, (26726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21030 states to 21030 states and 26726 transitions. [2021-11-23 13:12:16,414 INFO L78 Accepts]: Start accepts. Automaton has 21030 states and 26726 transitions. Word has length 106 [2021-11-23 13:12:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:16,415 INFO L470 AbstractCegarLoop]: Abstraction has 21030 states and 26726 transitions. [2021-11-23 13:12:16,415 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) [2021-11-23 13:12:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 21030 states and 26726 transitions. [2021-11-23 13:12:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 13:12:16,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:16,419 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:12:16,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 13:12:16,420 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2069379356, now seen corresponding path program 1 times [2021-11-23 13:12:16,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:16,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096493188] [2021-11-23 13:12:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:16,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:12:16,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:16,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096493188] [2021-11-23 13:12:16,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096493188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:16,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:16,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:16,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99082625] [2021-11-23 13:12:16,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:16,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:12:16,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:12:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:16,443 INFO L87 Difference]: Start difference. First operand 21030 states and 26726 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:18,136 INFO L93 Difference]: Finished difference Result 39446 states and 48940 transitions. [2021-11-23 13:12:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 13:12:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:18,159 INFO L225 Difference]: With dead ends: 39446 [2021-11-23 13:12:18,159 INFO L226 Difference]: Without dead ends: 20788 [2021-11-23 13:12:18,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:18,179 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 695 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 8616 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:18,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 8616 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20788 states. [2021-11-23 13:12:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20788 to 20788. [2021-11-23 13:12:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20788 states, 20785 states have (on average 1.2727447678614385) internal successors, (26454), 20787 states have internal predecessors, (26454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20788 states to 20788 states and 26454 transitions. [2021-11-23 13:12:20,172 INFO L78 Accepts]: Start accepts. Automaton has 20788 states and 26454 transitions. Word has length 106 [2021-11-23 13:12:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:20,172 INFO L470 AbstractCegarLoop]: Abstraction has 20788 states and 26454 transitions. [2021-11-23 13:12:20,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 20788 states and 26454 transitions. [2021-11-23 13:12:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 13:12:20,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:20,175 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:12:20,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 13:12:20,176 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1660235996, now seen corresponding path program 1 times [2021-11-23 13:12:20,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:20,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195042797] [2021-11-23 13:12:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:20,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:20,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:20,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195042797] [2021-11-23 13:12:20,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195042797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:20,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:20,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:20,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795344957] [2021-11-23 13:12:20,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:20,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:12:20,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:20,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:12:20,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:20,217 INFO L87 Difference]: Start difference. First operand 20788 states and 26454 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:23,455 INFO L93 Difference]: Finished difference Result 56252 states and 69100 transitions. [2021-11-23 13:12:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-23 13:12:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:23,494 INFO L225 Difference]: With dead ends: 56252 [2021-11-23 13:12:23,494 INFO L226 Difference]: Without dead ends: 37836 [2021-11-23 13:12:23,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:23,512 INFO L933 BasicCegarLoop]: 4839 mSDtfsCounter, 4506 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:23,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4506 Valid, 5509 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37836 states. [2021-11-23 13:12:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37836 to 36920. [2021-11-23 13:12:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36920 states, 36917 states have (on average 1.2397540428528862) internal successors, (45768), 36919 states have internal predecessors, (45768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36920 states to 36920 states and 45768 transitions. [2021-11-23 13:12:26,790 INFO L78 Accepts]: Start accepts. Automaton has 36920 states and 45768 transitions. Word has length 107 [2021-11-23 13:12:26,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:26,790 INFO L470 AbstractCegarLoop]: Abstraction has 36920 states and 45768 transitions. [2021-11-23 13:12:26,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 36920 states and 45768 transitions. [2021-11-23 13:12:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 13:12:26,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:26,796 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:12:26,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 13:12:26,797 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1603690402, now seen corresponding path program 1 times [2021-11-23 13:12:26,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:26,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600475968] [2021-11-23 13:12:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:26,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:12:26,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:26,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600475968] [2021-11-23 13:12:26,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600475968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:26,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:26,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:26,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609618643] [2021-11-23 13:12:26,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:26,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:12:26,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:26,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:12:26,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:26,820 INFO L87 Difference]: Start difference. First operand 36920 states and 45768 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:30,552 INFO L93 Difference]: Finished difference Result 71322 states and 87132 transitions. [2021-11-23 13:12:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:30,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2021-11-23 13:12:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:30,589 INFO L225 Difference]: With dead ends: 71322 [2021-11-23 13:12:30,589 INFO L226 Difference]: Without dead ends: 36680 [2021-11-23 13:12:30,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:30,605 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 693 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 8615 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:30,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 8615 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36680 states. [2021-11-23 13:12:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36680 to 36680. [2021-11-23 13:12:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36680 states, 36677 states have (on average 1.2405594786923686) internal successors, (45500), 36679 states have internal predecessors, (45500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36680 states to 36680 states and 45500 transitions. [2021-11-23 13:12:34,133 INFO L78 Accepts]: Start accepts. Automaton has 36680 states and 45500 transitions. Word has length 107 [2021-11-23 13:12:34,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:34,134 INFO L470 AbstractCegarLoop]: Abstraction has 36680 states and 45500 transitions. [2021-11-23 13:12:34,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 36680 states and 45500 transitions. [2021-11-23 13:12:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 13:12:34,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:34,139 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:12:34,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 13:12:34,140 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:12:34,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1572087895, now seen corresponding path program 1 times [2021-11-23 13:12:34,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:34,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91644231] [2021-11-23 13:12:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:34,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:34,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91644231] [2021-11-23 13:12:34,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91644231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:34,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:34,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:34,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560139556] [2021-11-23 13:12:34,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:34,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:12:34,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:12:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:34,180 INFO L87 Difference]: Start difference. First operand 36680 states and 45500 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) [2021-11-23 13:12:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:40,677 INFO L93 Difference]: Finished difference Result 102810 states and 124870 transitions. [2021-11-23 13:12:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:40,677 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 [2021-11-23 13:12:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:40,751 INFO L225 Difference]: With dead ends: 102810 [2021-11-23 13:12:40,751 INFO L226 Difference]: Without dead ends: 68502 [2021-11-23 13:12:40,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:40,773 INFO L933 BasicCegarLoop]: 4835 mSDtfsCounter, 4494 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 5511 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:40,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4494 Valid, 5511 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68502 states.