./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF --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 b13c8169fb5357220d29959d63393b66877a012797fdaa495805bf5299de8fb1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:31:53,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:31:53,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:31:53,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:31:53,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:31:53,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:31:53,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:31:53,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:31:53,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:31:53,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:31:53,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:31:53,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:31:53,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:31:53,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:31:53,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:31:53,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:31:53,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:31:53,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:31:53,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:31:53,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:31:53,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:31:53,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:31:53,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:31:53,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:31:53,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:31:53,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:31:53,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:31:53,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:31:53,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:31:53,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:31:53,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:31:53,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:31:53,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:31:53,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:31:53,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:31:53,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:31:53,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:31:53,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:31:53,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:31:53,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:31:53,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:31:53,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:31:53,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:31:53,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:31:53,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:31:53,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:31:53,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:31:53,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:31:53,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:31:53,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:31:53,950 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:31:53,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:31:53,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:31:53,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:31:53,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:31:53,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:31:53,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:31:53,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:31:53,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:31:53,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:31:53,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:31:53,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:31:53,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:31:53,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:31:53,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:31:53,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:31:53,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:31:53,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:31:53,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:31:53,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:31:53,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:31:53,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:31:53,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:31:53,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:31:53,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:31:53,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:31:53,958 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b13c8169fb5357220d29959d63393b66877a012797fdaa495805bf5299de8fb1 [2021-11-20 06:31:54,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:31:54,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:31:54,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:31:54,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:31:54,291 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:31:54,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-20 06:31:54,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/data/eeb87399c/ff5bae1e712f4632a5f32df364f481ae/FLAG2a3d77d28 [2021-11-20 06:31:55,068 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:31:55,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-20 06:31:55,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/data/eeb87399c/ff5bae1e712f4632a5f32df364f481ae/FLAG2a3d77d28 [2021-11-20 06:31:55,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/data/eeb87399c/ff5bae1e712f4632a5f32df364f481ae [2021-11-20 06:31:55,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:31:55,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:31:55,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:31:55,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:31:55,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:31:55,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:31:55" (1/1) ... [2021-11-20 06:31:55,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcbbe91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:55, skipping insertion in model container [2021-11-20 06:31:55,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:31:55" (1/1) ... [2021-11-20 06:31:55,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:31:55,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:31:55,718 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2021-11-20 06:31:55,763 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2021-11-20 06:31:55,778 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2021-11-20 06:31:55,785 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2021-11-20 06:31:56,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:31:56,019 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:31:56,108 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2021-11-20 06:31:56,155 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2021-11-20 06:31:56,177 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2021-11-20 06:31:56,196 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_8e31b269-1b46-4849-a1b7-6485e49df5fd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2021-11-20 06:31:56,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:31:56,469 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:31:56,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56 WrapperNode [2021-11-20 06:31:56,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:31:56,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:31:56,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:31:56,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:31:56,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,602 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2551 [2021-11-20 06:31:56,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:31:56,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:31:56,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:31:56,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:31:56,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:31:56,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:31:56,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:31:56,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:31:56,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (1/1) ... [2021-11-20 06:31:56,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:31:56,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:56,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:31:56,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:31:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:31:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:31:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:31:56,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:31:57,086 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:31:57,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:31:58,574 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:31:58,589 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:31:58,589 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:31:58,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:58 BoogieIcfgContainer [2021-11-20 06:31:58,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:31:58,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:31:58,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:31:58,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:31:58,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:31:55" (1/3) ... [2021-11-20 06:31:58,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea35a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:31:58, skipping insertion in model container [2021-11-20 06:31:58,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:56" (2/3) ... [2021-11-20 06:31:58,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea35a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:31:58, skipping insertion in model container [2021-11-20 06:31:58,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:58" (3/3) ... [2021-11-20 06:31:58,601 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-20 06:31:58,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:31:58,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-20 06:31:58,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:31:58,665 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 [2021-11-20 06:31:58,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-20 06:31:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 06:31:58,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:58,707 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] [2021-11-20 06:31:58,708 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:31:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash 881754525, now seen corresponding path program 1 times [2021-11-20 06:31:58,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:58,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290119472] [2021-11-20 06:31:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:58,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:59,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:59,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290119472] [2021-11-20 06:31:59,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290119472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:59,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:59,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:31:59,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856510764] [2021-11-20 06:31:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:59,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:31:59,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:59,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:31:59,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:31:59,118 INFO L87 Difference]: Start difference. First operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:59,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:59,301 INFO L93 Difference]: Finished difference Result 690 states and 1215 transitions. [2021-11-20 06:31:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:31:59,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-20 06:31:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:59,336 INFO L225 Difference]: With dead ends: 690 [2021-11-20 06:31:59,336 INFO L226 Difference]: Without dead ends: 546 [2021-11-20 06:31:59,341 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 [2021-11-20 06:31:59,345 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 422 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:59,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1360 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:31:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-20 06:31:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2021-11-20 06:31:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 536 states have (on average 1.333955223880597) internal successors, (715), 539 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 715 transitions. [2021-11-20 06:31:59,433 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 715 transitions. Word has length 50 [2021-11-20 06:31:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:59,434 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 715 transitions. [2021-11-20 06:31:59,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 715 transitions. [2021-11-20 06:31:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 06:31:59,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:59,445 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] [2021-11-20 06:31:59,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:31:59,446 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:31:59,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash -88586633, now seen corresponding path program 1 times [2021-11-20 06:31:59,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:59,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526174837] [2021-11-20 06:31:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:59,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:59,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:59,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526174837] [2021-11-20 06:31:59,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526174837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:59,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:59,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:31:59,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70749947] [2021-11-20 06:31:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:59,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:31:59,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:31:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:31:59,629 INFO L87 Difference]: Start difference. First operand 540 states and 715 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:59,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:59,726 INFO L93 Difference]: Finished difference Result 955 states and 1317 transitions. [2021-11-20 06:31:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:31:59,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-20 06:31:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:59,734 INFO L225 Difference]: With dead ends: 955 [2021-11-20 06:31:59,734 INFO L226 Difference]: Without dead ends: 714 [2021-11-20 06:31:59,739 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 [2021-11-20 06:31:59,741 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 236 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:59,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1018 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:31:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-11-20 06:31:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 708. [2021-11-20 06:31:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 704 states have (on average 1.3536931818181819) internal successors, (953), 707 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 953 transitions. [2021-11-20 06:31:59,813 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 953 transitions. Word has length 50 [2021-11-20 06:31:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:59,818 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 953 transitions. [2021-11-20 06:31:59,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 953 transitions. [2021-11-20 06:31:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 06:31:59,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:59,830 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] [2021-11-20 06:31:59,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:31:59,831 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:31:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 301591798, now seen corresponding path program 1 times [2021-11-20 06:31:59,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:59,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72113504] [2021-11-20 06:31:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:59,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:59,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:59,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72113504] [2021-11-20 06:31:59,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72113504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:59,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:59,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:31:59,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434942502] [2021-11-20 06:31:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:59,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:31:59,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:31:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:31:59,956 INFO L87 Difference]: Start difference. First operand 708 states and 953 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:00,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:00,056 INFO L93 Difference]: Finished difference Result 1364 states and 1888 transitions. [2021-11-20 06:32:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:00,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-20 06:32:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:00,064 INFO L225 Difference]: With dead ends: 1364 [2021-11-20 06:32:00,066 INFO L226 Difference]: Without dead ends: 1035 [2021-11-20 06:32:00,067 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 [2021-11-20 06:32:00,068 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 297 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:00,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 994 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:32:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2021-11-20 06:32:00,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1028. [2021-11-20 06:32:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1024 states have (on average 1.3642578125) internal successors, (1397), 1027 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1397 transitions. [2021-11-20 06:32:00,121 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1397 transitions. Word has length 50 [2021-11-20 06:32:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:00,123 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 1397 transitions. [2021-11-20 06:32:00,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1397 transitions. [2021-11-20 06:32:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 06:32:00,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:00,128 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] [2021-11-20 06:32:00,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:32:00,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:00,131 INFO L85 PathProgramCache]: Analyzing trace with hash 157307916, now seen corresponding path program 1 times [2021-11-20 06:32:00,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:00,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506129584] [2021-11-20 06:32:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:00,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:00,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:00,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506129584] [2021-11-20 06:32:00,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506129584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:00,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:00,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:32:00,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145559442] [2021-11-20 06:32:00,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:00,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:32:00,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:32:00,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:32:00,291 INFO L87 Difference]: Start difference. First operand 1028 states and 1397 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:00,706 INFO L93 Difference]: Finished difference Result 2117 states and 2920 transitions. [2021-11-20 06:32:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:32:00,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-20 06:32:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:00,714 INFO L225 Difference]: With dead ends: 2117 [2021-11-20 06:32:00,714 INFO L226 Difference]: Without dead ends: 1255 [2021-11-20 06:32:00,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:00,724 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1684 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:00,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 399 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:32:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-20 06:32:00,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1245. [2021-11-20 06:32:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1241 states have (on average 1.3738920225624496) internal successors, (1705), 1244 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1705 transitions. [2021-11-20 06:32:00,798 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1705 transitions. Word has length 50 [2021-11-20 06:32:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:00,800 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1705 transitions. [2021-11-20 06:32:00,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1705 transitions. [2021-11-20 06:32:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 06:32:00,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:00,803 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] [2021-11-20 06:32:00,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:32:00,804 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:00,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1701829494, now seen corresponding path program 1 times [2021-11-20 06:32:00,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:00,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139554237] [2021-11-20 06:32:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:00,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:00,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:00,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139554237] [2021-11-20 06:32:00,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139554237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:00,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:00,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:32:00,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226335413] [2021-11-20 06:32:00,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:00,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:32:00,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:32:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:32:00,928 INFO L87 Difference]: Start difference. First operand 1245 states and 1705 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:01,284 INFO L93 Difference]: Finished difference Result 2643 states and 3662 transitions. [2021-11-20 06:32:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:32:01,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-20 06:32:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:01,294 INFO L225 Difference]: With dead ends: 2643 [2021-11-20 06:32:01,295 INFO L226 Difference]: Without dead ends: 1579 [2021-11-20 06:32:01,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:01,297 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 1436 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:01,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 342 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:32:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-20 06:32:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1177. [2021-11-20 06:32:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1173 states have (on average 1.3725490196078431) internal successors, (1610), 1176 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1610 transitions. [2021-11-20 06:32:01,379 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1610 transitions. Word has length 51 [2021-11-20 06:32:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:01,380 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1610 transitions. [2021-11-20 06:32:01,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1610 transitions. [2021-11-20 06:32:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 06:32:01,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:01,382 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] [2021-11-20 06:32:01,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:32:01,383 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1906241974, now seen corresponding path program 1 times [2021-11-20 06:32:01,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:01,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040069712] [2021-11-20 06:32:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:01,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:01,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:01,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040069712] [2021-11-20 06:32:01,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040069712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:01,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:01,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:32:01,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672546522] [2021-11-20 06:32:01,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:01,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:32:01,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:32:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:32:01,469 INFO L87 Difference]: Start difference. First operand 1177 states and 1610 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:01,864 INFO L93 Difference]: Finished difference Result 2592 states and 3567 transitions. [2021-11-20 06:32:01,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:32:01,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-20 06:32:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:01,875 INFO L225 Difference]: With dead ends: 2592 [2021-11-20 06:32:01,875 INFO L226 Difference]: Without dead ends: 1534 [2021-11-20 06:32:01,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:01,878 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1270 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:01,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 316 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:32:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2021-11-20 06:32:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1521. [2021-11-20 06:32:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1517 states have (on average 1.3645352669742914) internal successors, (2070), 1520 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2070 transitions. [2021-11-20 06:32:01,996 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2070 transitions. Word has length 51 [2021-11-20 06:32:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:01,997 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 2070 transitions. [2021-11-20 06:32:01,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2070 transitions. [2021-11-20 06:32:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 06:32:01,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:01,999 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] [2021-11-20 06:32:02,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:32:02,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1198562519, now seen corresponding path program 1 times [2021-11-20 06:32:02,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:02,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107155755] [2021-11-20 06:32:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:02,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:02,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:02,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107155755] [2021-11-20 06:32:02,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107155755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:02,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:02,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:32:02,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821805306] [2021-11-20 06:32:02,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:02,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:32:02,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:32:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:02,107 INFO L87 Difference]: Start difference. First operand 1521 states and 2070 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:03,033 INFO L93 Difference]: Finished difference Result 5054 states and 7046 transitions. [2021-11-20 06:32:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:32:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-20 06:32:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:03,060 INFO L225 Difference]: With dead ends: 5054 [2021-11-20 06:32:03,061 INFO L226 Difference]: Without dead ends: 4621 [2021-11-20 06:32:03,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:32:03,066 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 2998 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:03,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2998 Valid, 630 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:32:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2021-11-20 06:32:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 1533. [2021-11-20 06:32:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1529 states have (on average 1.3642903858731197) internal successors, (2086), 1532 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2086 transitions. [2021-11-20 06:32:03,239 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2086 transitions. Word has length 52 [2021-11-20 06:32:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:03,240 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 2086 transitions. [2021-11-20 06:32:03,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2086 transitions. [2021-11-20 06:32:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 06:32:03,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:03,243 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] [2021-11-20 06:32:03,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:32:03,244 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:03,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1743373944, now seen corresponding path program 1 times [2021-11-20 06:32:03,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:03,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785440095] [2021-11-20 06:32:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:03,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:03,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:03,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785440095] [2021-11-20 06:32:03,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785440095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:03,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:03,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:32:03,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419254154] [2021-11-20 06:32:03,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:03,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:32:03,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:03,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:32:03,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:03,363 INFO L87 Difference]: Start difference. First operand 1533 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:04,257 INFO L93 Difference]: Finished difference Result 4964 states and 6883 transitions. [2021-11-20 06:32:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:32:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-20 06:32:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:04,280 INFO L225 Difference]: With dead ends: 4964 [2021-11-20 06:32:04,280 INFO L226 Difference]: Without dead ends: 4243 [2021-11-20 06:32:04,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:32:04,283 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 2507 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:04,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2507 Valid, 585 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:32:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2021-11-20 06:32:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 1547. [2021-11-20 06:32:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1543 states have (on average 1.3635774465327284) internal successors, (2104), 1546 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2104 transitions. [2021-11-20 06:32:04,464 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2104 transitions. Word has length 53 [2021-11-20 06:32:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:04,464 INFO L470 AbstractCegarLoop]: Abstraction has 1547 states and 2104 transitions. [2021-11-20 06:32:04,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:04,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2104 transitions. [2021-11-20 06:32:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 06:32:04,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:04,467 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] [2021-11-20 06:32:04,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:32:04,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:04,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:04,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1359815673, now seen corresponding path program 1 times [2021-11-20 06:32:04,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:04,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652180129] [2021-11-20 06:32:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:04,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:04,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:04,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652180129] [2021-11-20 06:32:04,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652180129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:04,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:04,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:32:04,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281467415] [2021-11-20 06:32:04,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:04,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:32:04,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:04,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:32:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:04,547 INFO L87 Difference]: Start difference. First operand 1547 states and 2104 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:05,658 INFO L93 Difference]: Finished difference Result 5348 states and 7493 transitions. [2021-11-20 06:32:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:32:05,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-20 06:32:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:05,686 INFO L225 Difference]: With dead ends: 5348 [2021-11-20 06:32:05,686 INFO L226 Difference]: Without dead ends: 4798 [2021-11-20 06:32:05,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:32:05,690 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1890 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:05,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 719 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:32:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2021-11-20 06:32:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 1569. [2021-11-20 06:32:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1565 states have (on average 1.3642172523961662) internal successors, (2135), 1568 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2135 transitions. [2021-11-20 06:32:05,927 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2135 transitions. Word has length 53 [2021-11-20 06:32:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:05,927 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2135 transitions. [2021-11-20 06:32:05,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2135 transitions. [2021-11-20 06:32:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 06:32:05,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:05,930 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] [2021-11-20 06:32:05,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:32:05,930 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1681497036, now seen corresponding path program 1 times [2021-11-20 06:32:05,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:05,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835208580] [2021-11-20 06:32:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:05,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:06,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:06,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835208580] [2021-11-20 06:32:06,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835208580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:06,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:06,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:32:06,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012071201] [2021-11-20 06:32:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:06,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:32:06,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:32:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:32:06,090 INFO L87 Difference]: Start difference. First operand 1569 states and 2135 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:07,055 INFO L93 Difference]: Finished difference Result 4021 states and 5564 transitions. [2021-11-20 06:32:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:32:07,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-20 06:32:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:07,071 INFO L225 Difference]: With dead ends: 4021 [2021-11-20 06:32:07,072 INFO L226 Difference]: Without dead ends: 2971 [2021-11-20 06:32:07,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:32:07,075 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 2239 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:07,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2239 Valid, 872 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:32:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-11-20 06:32:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1569. [2021-11-20 06:32:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1565 states have (on average 1.3610223642172523) internal successors, (2130), 1568 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2130 transitions. [2021-11-20 06:32:07,329 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2130 transitions. Word has length 54 [2021-11-20 06:32:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:07,330 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2130 transitions. [2021-11-20 06:32:07,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2130 transitions. [2021-11-20 06:32:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 06:32:07,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:07,333 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] [2021-11-20 06:32:07,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:32:07,334 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash 711155878, now seen corresponding path program 1 times [2021-11-20 06:32:07,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:07,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918683534] [2021-11-20 06:32:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:07,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:07,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:07,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918683534] [2021-11-20 06:32:07,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918683534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:07,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:07,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:32:07,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869014436] [2021-11-20 06:32:07,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:07,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:32:07,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:32:07,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:32:07,487 INFO L87 Difference]: Start difference. First operand 1569 states and 2130 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:08,895 INFO L93 Difference]: Finished difference Result 5297 states and 7432 transitions. [2021-11-20 06:32:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:32:08,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-20 06:32:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:08,921 INFO L225 Difference]: With dead ends: 5297 [2021-11-20 06:32:08,921 INFO L226 Difference]: Without dead ends: 4375 [2021-11-20 06:32:08,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:32:08,924 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1979 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:08,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1979 Valid, 1496 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:32:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-11-20 06:32:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 1540. [2021-11-20 06:32:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1536 states have (on average 1.3600260416666667) internal successors, (2089), 1539 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2089 transitions. [2021-11-20 06:32:09,132 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2089 transitions. Word has length 54 [2021-11-20 06:32:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:09,132 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2089 transitions. [2021-11-20 06:32:09,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:09,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2089 transitions. [2021-11-20 06:32:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 06:32:09,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:09,135 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] [2021-11-20 06:32:09,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:32:09,136 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash -839465653, now seen corresponding path program 1 times [2021-11-20 06:32:09,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:09,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447446632] [2021-11-20 06:32:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:09,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:09,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:09,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447446632] [2021-11-20 06:32:09,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447446632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:09,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:09,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:32:09,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926329246] [2021-11-20 06:32:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:09,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:32:09,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:32:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:32:09,253 INFO L87 Difference]: Start difference. First operand 1540 states and 2089 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:10,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:10,373 INFO L93 Difference]: Finished difference Result 3568 states and 4963 transitions. [2021-11-20 06:32:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:32:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-20 06:32:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:10,388 INFO L225 Difference]: With dead ends: 3568 [2021-11-20 06:32:10,388 INFO L226 Difference]: Without dead ends: 3563 [2021-11-20 06:32:10,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:32:10,391 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 1641 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:10,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 1163 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:32:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2021-11-20 06:32:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 1540. [2021-11-20 06:32:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1536 states have (on average 1.3587239583333333) internal successors, (2087), 1539 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2087 transitions. [2021-11-20 06:32:10,598 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2087 transitions. Word has length 54 [2021-11-20 06:32:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:10,599 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2087 transitions. [2021-11-20 06:32:10,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2087 transitions. [2021-11-20 06:32:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 06:32:10,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:10,601 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] [2021-11-20 06:32:10,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:32:10,602 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1126690749, now seen corresponding path program 1 times [2021-11-20 06:32:10,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:10,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830725552] [2021-11-20 06:32:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:10,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:10,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830725552] [2021-11-20 06:32:10,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830725552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:10,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:10,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:10,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129031083] [2021-11-20 06:32:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:10,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:10,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:10,644 INFO L87 Difference]: Start difference. First operand 1540 states and 2087 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:10,902 INFO L93 Difference]: Finished difference Result 2068 states and 2797 transitions. [2021-11-20 06:32:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:10,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-20 06:32:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:10,916 INFO L225 Difference]: With dead ends: 2068 [2021-11-20 06:32:10,916 INFO L226 Difference]: Without dead ends: 1509 [2021-11-20 06:32:10,918 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 [2021-11-20 06:32:10,923 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 257 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:10,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 673 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-20 06:32:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1507. [2021-11-20 06:32:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3293413173652695) internal successors, (1998), 1506 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1998 transitions. [2021-11-20 06:32:11,178 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1998 transitions. Word has length 55 [2021-11-20 06:32:11,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:11,179 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1998 transitions. [2021-11-20 06:32:11,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:11,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1998 transitions. [2021-11-20 06:32:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 06:32:11,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:11,183 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] [2021-11-20 06:32:11,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:32:11,183 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1317678866, now seen corresponding path program 1 times [2021-11-20 06:32:11,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:11,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341466650] [2021-11-20 06:32:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:11,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:11,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:11,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341466650] [2021-11-20 06:32:11,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341466650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:11,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:11,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:11,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121337252] [2021-11-20 06:32:11,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:11,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:11,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:11,231 INFO L87 Difference]: Start difference. First operand 1507 states and 1998 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:11,442 INFO L93 Difference]: Finished difference Result 2127 states and 2843 transitions. [2021-11-20 06:32:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:11,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-20 06:32:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:11,447 INFO L225 Difference]: With dead ends: 2127 [2021-11-20 06:32:11,447 INFO L226 Difference]: Without dead ends: 1514 [2021-11-20 06:32:11,448 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 [2021-11-20 06:32:11,449 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 206 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:11,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 744 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-11-20 06:32:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1507. [2021-11-20 06:32:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3140385894876914) internal successors, (1975), 1506 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1975 transitions. [2021-11-20 06:32:11,653 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1975 transitions. Word has length 55 [2021-11-20 06:32:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:11,653 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1975 transitions. [2021-11-20 06:32:11,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1975 transitions. [2021-11-20 06:32:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 06:32:11,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:11,656 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] [2021-11-20 06:32:11,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:32:11,656 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -944081870, now seen corresponding path program 1 times [2021-11-20 06:32:11,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:11,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596725241] [2021-11-20 06:32:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:11,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:11,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:11,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596725241] [2021-11-20 06:32:11,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596725241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:11,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:11,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:11,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679874262] [2021-11-20 06:32:11,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:11,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:11,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:11,697 INFO L87 Difference]: Start difference. First operand 1507 states and 1975 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:11,881 INFO L93 Difference]: Finished difference Result 2164 states and 2861 transitions. [2021-11-20 06:32:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-20 06:32:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:11,884 INFO L225 Difference]: With dead ends: 2164 [2021-11-20 06:32:11,885 INFO L226 Difference]: Without dead ends: 1513 [2021-11-20 06:32:11,886 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 [2021-11-20 06:32:11,887 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 222 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:11,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 745 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-11-20 06:32:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1507. [2021-11-20 06:32:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3020625415834997) internal successors, (1957), 1506 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1957 transitions. [2021-11-20 06:32:12,076 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1957 transitions. Word has length 55 [2021-11-20 06:32:12,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:12,077 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1957 transitions. [2021-11-20 06:32:12,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:12,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1957 transitions. [2021-11-20 06:32:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 06:32:12,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:12,079 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] [2021-11-20 06:32:12,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:32:12,080 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash -599519829, now seen corresponding path program 1 times [2021-11-20 06:32:12,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:12,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090053510] [2021-11-20 06:32:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:12,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:12,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090053510] [2021-11-20 06:32:12,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090053510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:12,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:12,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:12,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152083680] [2021-11-20 06:32:12,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:12,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:12,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:12,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:12,117 INFO L87 Difference]: Start difference. First operand 1507 states and 1957 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:12,477 INFO L93 Difference]: Finished difference Result 2638 states and 3459 transitions. [2021-11-20 06:32:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-20 06:32:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:12,481 INFO L225 Difference]: With dead ends: 2638 [2021-11-20 06:32:12,482 INFO L226 Difference]: Without dead ends: 1786 [2021-11-20 06:32:12,483 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 [2021-11-20 06:32:12,484 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 280 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:12,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 420 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:32:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-11-20 06:32:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1397. [2021-11-20 06:32:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1393 states have (on average 1.3058147882268485) internal successors, (1819), 1396 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:12,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1819 transitions. [2021-11-20 06:32:12,714 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1819 transitions. Word has length 57 [2021-11-20 06:32:12,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:12,714 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 1819 transitions. [2021-11-20 06:32:12,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1819 transitions. [2021-11-20 06:32:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 06:32:12,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:12,717 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] [2021-11-20 06:32:12,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:32:12,717 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash -953719962, now seen corresponding path program 1 times [2021-11-20 06:32:12,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:12,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51735591] [2021-11-20 06:32:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:12,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:13,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:13,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51735591] [2021-11-20 06:32:13,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51735591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:13,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:13,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 06:32:13,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006999763] [2021-11-20 06:32:13,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:13,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:32:13,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:32:13,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:32:13,103 INFO L87 Difference]: Start difference. First operand 1397 states and 1819 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:14,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:14,589 INFO L93 Difference]: Finished difference Result 3372 states and 4492 transitions. [2021-11-20 06:32:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:32:14,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-20 06:32:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:14,596 INFO L225 Difference]: With dead ends: 3372 [2021-11-20 06:32:14,596 INFO L226 Difference]: Without dead ends: 3166 [2021-11-20 06:32:14,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-20 06:32:14,599 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1957 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:14,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 3295 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:32:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2021-11-20 06:32:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 1372. [2021-11-20 06:32:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1369 states have (on average 1.3067932797662527) internal successors, (1789), 1371 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1789 transitions. [2021-11-20 06:32:14,842 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1789 transitions. Word has length 57 [2021-11-20 06:32:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:14,842 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 1789 transitions. [2021-11-20 06:32:14,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1789 transitions. [2021-11-20 06:32:14,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 06:32:14,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:14,845 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] [2021-11-20 06:32:14,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:32:14,845 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:14,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1381909423, now seen corresponding path program 1 times [2021-11-20 06:32:14,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:14,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093008030] [2021-11-20 06:32:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:14,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:15,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:15,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093008030] [2021-11-20 06:32:15,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093008030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:15,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:15,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 06:32:15,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407236429] [2021-11-20 06:32:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:15,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:32:15,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:15,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:32:15,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:32:15,196 INFO L87 Difference]: Start difference. First operand 1372 states and 1789 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:16,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:16,725 INFO L93 Difference]: Finished difference Result 2693 states and 3578 transitions. [2021-11-20 06:32:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:32:16,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-20 06:32:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:16,730 INFO L225 Difference]: With dead ends: 2693 [2021-11-20 06:32:16,731 INFO L226 Difference]: Without dead ends: 2632 [2021-11-20 06:32:16,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-20 06:32:16,733 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 2041 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:16,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 2403 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:32:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-11-20 06:32:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 1360. [2021-11-20 06:32:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.3070692194403535) internal successors, (1775), 1359 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1775 transitions. [2021-11-20 06:32:16,962 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1775 transitions. Word has length 57 [2021-11-20 06:32:16,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:16,962 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1775 transitions. [2021-11-20 06:32:16,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1775 transitions. [2021-11-20 06:32:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 06:32:16,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:16,968 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] [2021-11-20 06:32:16,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:32:16,969 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1918440678, now seen corresponding path program 1 times [2021-11-20 06:32:16,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:16,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410926478] [2021-11-20 06:32:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:16,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:17,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:17,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410926478] [2021-11-20 06:32:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410926478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:17,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:17,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 06:32:17,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843832751] [2021-11-20 06:32:17,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:17,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:32:17,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:32:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:32:17,241 INFO L87 Difference]: Start difference. First operand 1360 states and 1775 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:18,617 INFO L93 Difference]: Finished difference Result 3691 states and 4925 transitions. [2021-11-20 06:32:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:32:18,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-20 06:32:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:18,628 INFO L225 Difference]: With dead ends: 3691 [2021-11-20 06:32:18,628 INFO L226 Difference]: Without dead ends: 3477 [2021-11-20 06:32:18,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:32:18,631 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2650 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:18,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2650 Valid, 2002 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:32:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-11-20 06:32:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 1309. [2021-11-20 06:32:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 1.3096330275229358) internal successors, (1713), 1308 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1713 transitions. [2021-11-20 06:32:18,939 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1713 transitions. Word has length 57 [2021-11-20 06:32:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:18,939 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 1713 transitions. [2021-11-20 06:32:18,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1713 transitions. [2021-11-20 06:32:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 06:32:18,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:18,943 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] [2021-11-20 06:32:18,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:32:18,943 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2109512119, now seen corresponding path program 1 times [2021-11-20 06:32:18,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:18,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944089044] [2021-11-20 06:32:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:18,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:18,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944089044] [2021-11-20 06:32:18,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944089044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:18,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:18,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:32:18,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082760299] [2021-11-20 06:32:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:18,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:32:18,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:32:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:32:19,000 INFO L87 Difference]: Start difference. First operand 1309 states and 1713 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:19,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:19,411 INFO L93 Difference]: Finished difference Result 3040 states and 4113 transitions. [2021-11-20 06:32:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:32:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-20 06:32:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:19,423 INFO L225 Difference]: With dead ends: 3040 [2021-11-20 06:32:19,424 INFO L226 Difference]: Without dead ends: 2306 [2021-11-20 06:32:19,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:19,429 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 966 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:19,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 589 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-11-20 06:32:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1981. [2021-11-20 06:32:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1980 states have (on average 1.3156565656565657) internal successors, (2605), 1980 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2605 transitions. [2021-11-20 06:32:19,885 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2605 transitions. Word has length 66 [2021-11-20 06:32:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:19,886 INFO L470 AbstractCegarLoop]: Abstraction has 1981 states and 2605 transitions. [2021-11-20 06:32:19,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2605 transitions. [2021-11-20 06:32:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 06:32:19,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:19,890 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] [2021-11-20 06:32:19,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:32:19,891 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1089617976, now seen corresponding path program 1 times [2021-11-20 06:32:19,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:19,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646308865] [2021-11-20 06:32:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:19,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:19,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:19,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646308865] [2021-11-20 06:32:19,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646308865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:19,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:19,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:32:19,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084282587] [2021-11-20 06:32:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:19,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:32:19,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:32:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:32:19,950 INFO L87 Difference]: Start difference. First operand 1981 states and 2605 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:20,285 INFO L93 Difference]: Finished difference Result 1987 states and 2608 transitions. [2021-11-20 06:32:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:32:20,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 06:32:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:20,289 INFO L225 Difference]: With dead ends: 1987 [2021-11-20 06:32:20,290 INFO L226 Difference]: Without dead ends: 1764 [2021-11-20 06:32:20,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:32:20,291 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 626 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:20,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 687 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:32:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-11-20 06:32:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1760. [2021-11-20 06:32:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 1.3200682205798748) internal successors, (2322), 1759 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2322 transitions. [2021-11-20 06:32:20,785 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2322 transitions. Word has length 67 [2021-11-20 06:32:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:20,785 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2322 transitions. [2021-11-20 06:32:20,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2322 transitions. [2021-11-20 06:32:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 06:32:20,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:20,790 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] [2021-11-20 06:32:20,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 06:32:20,790 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1950278783, now seen corresponding path program 1 times [2021-11-20 06:32:20,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350283453] [2021-11-20 06:32:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:20,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:20,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:20,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350283453] [2021-11-20 06:32:20,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350283453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:20,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:20,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:20,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902456503] [2021-11-20 06:32:20,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:20,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:20,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:20,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:20,846 INFO L87 Difference]: Start difference. First operand 1760 states and 2322 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:21,459 INFO L93 Difference]: Finished difference Result 4016 states and 5396 transitions. [2021-11-20 06:32:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:21,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-20 06:32:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:21,466 INFO L225 Difference]: With dead ends: 4016 [2021-11-20 06:32:21,466 INFO L226 Difference]: Without dead ends: 2722 [2021-11-20 06:32:21,469 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 [2021-11-20 06:32:21,469 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 104 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:21,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 520 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2021-11-20 06:32:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2592. [2021-11-20 06:32:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2591 states have (on average 1.3207255885758395) internal successors, (3422), 2591 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3422 transitions. [2021-11-20 06:32:22,111 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3422 transitions. Word has length 68 [2021-11-20 06:32:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:22,111 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 3422 transitions. [2021-11-20 06:32:22,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3422 transitions. [2021-11-20 06:32:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 06:32:22,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:22,113 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] [2021-11-20 06:32:22,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 06:32:22,114 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:22,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 427404410, now seen corresponding path program 1 times [2021-11-20 06:32:22,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:22,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034918920] [2021-11-20 06:32:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:22,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:22,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:22,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034918920] [2021-11-20 06:32:22,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034918920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:22,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:22,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:22,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690250470] [2021-11-20 06:32:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:22,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:22,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:22,183 INFO L87 Difference]: Start difference. First operand 2592 states and 3422 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:23,144 INFO L93 Difference]: Finished difference Result 6604 states and 8876 transitions. [2021-11-20 06:32:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-20 06:32:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:23,149 INFO L225 Difference]: With dead ends: 6604 [2021-11-20 06:32:23,149 INFO L226 Difference]: Without dead ends: 4498 [2021-11-20 06:32:23,153 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 [2021-11-20 06:32:23,154 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 94 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:23,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 507 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2021-11-20 06:32:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4128. [2021-11-20 06:32:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 4127 states have (on average 1.3249333656409015) internal successors, (5468), 4127 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 5468 transitions. [2021-11-20 06:32:24,066 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 5468 transitions. Word has length 68 [2021-11-20 06:32:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:24,066 INFO L470 AbstractCegarLoop]: Abstraction has 4128 states and 5468 transitions. [2021-11-20 06:32:24,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 5468 transitions. [2021-11-20 06:32:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 06:32:24,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:24,069 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] [2021-11-20 06:32:24,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 06:32:24,069 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357008, now seen corresponding path program 1 times [2021-11-20 06:32:24,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:24,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801939590] [2021-11-20 06:32:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:24,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:24,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:24,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801939590] [2021-11-20 06:32:24,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801939590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:24,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:24,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:24,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180457090] [2021-11-20 06:32:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:24,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:24,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:24,135 INFO L87 Difference]: Start difference. First operand 4128 states and 5468 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:25,734 INFO L93 Difference]: Finished difference Result 11012 states and 14710 transitions. [2021-11-20 06:32:25,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:25,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-20 06:32:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:25,745 INFO L225 Difference]: With dead ends: 11012 [2021-11-20 06:32:25,746 INFO L226 Difference]: Without dead ends: 7370 [2021-11-20 06:32:25,751 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 [2021-11-20 06:32:25,752 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 81 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:25,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 491 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2021-11-20 06:32:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 6760. [2021-11-20 06:32:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 6759 states have (on average 1.3197218523450214) internal successors, (8920), 6759 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 8920 transitions. [2021-11-20 06:32:27,174 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 8920 transitions. Word has length 70 [2021-11-20 06:32:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:27,174 INFO L470 AbstractCegarLoop]: Abstraction has 6760 states and 8920 transitions. [2021-11-20 06:32:27,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 8920 transitions. [2021-11-20 06:32:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 06:32:27,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:27,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:32:27,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 06:32:27,177 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:27,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2105959165, now seen corresponding path program 1 times [2021-11-20 06:32:27,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:27,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832123345] [2021-11-20 06:32:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:27,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:27,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:27,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832123345] [2021-11-20 06:32:27,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832123345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:27,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:27,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:32:27,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109712761] [2021-11-20 06:32:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:27,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:32:27,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:32:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:32:27,272 INFO L87 Difference]: Start difference. First operand 6760 states and 8920 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:30,584 INFO L93 Difference]: Finished difference Result 14374 states and 18731 transitions. [2021-11-20 06:32:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:32:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-20 06:32:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:30,601 INFO L225 Difference]: With dead ends: 14374 [2021-11-20 06:32:30,601 INFO L226 Difference]: Without dead ends: 14372 [2021-11-20 06:32:30,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:32:30,605 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 311 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:30,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 1214 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:32:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2021-11-20 06:32:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 7432. [2021-11-20 06:32:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 7431 states have (on average 1.290808774054636) internal successors, (9592), 7431 states have internal predecessors, (9592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 9592 transitions. [2021-11-20 06:32:32,374 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 9592 transitions. Word has length 72 [2021-11-20 06:32:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:32,375 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 9592 transitions. [2021-11-20 06:32:32,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 9592 transitions. [2021-11-20 06:32:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 06:32:32,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:32,378 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] [2021-11-20 06:32:32,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 06:32:32,378 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:32,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:32,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1422452613, now seen corresponding path program 1 times [2021-11-20 06:32:32,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:32,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912720945] [2021-11-20 06:32:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:32,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:32,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:32,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912720945] [2021-11-20 06:32:32,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912720945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:32,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:32,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:32:32,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119391410] [2021-11-20 06:32:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:32,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:32:32,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:32:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:32:32,423 INFO L87 Difference]: Start difference. First operand 7432 states and 9592 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:34,910 INFO L93 Difference]: Finished difference Result 17812 states and 22978 transitions. [2021-11-20 06:32:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:32:34,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-20 06:32:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:34,924 INFO L225 Difference]: With dead ends: 17812 [2021-11-20 06:32:34,924 INFO L226 Difference]: Without dead ends: 10866 [2021-11-20 06:32:34,933 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 [2021-11-20 06:32:34,934 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 176 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:34,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 353 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2021-11-20 06:32:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 10864. [2021-11-20 06:32:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10864 states, 10863 states have (on average 1.2718401914756512) internal successors, (13816), 10863 states have internal predecessors, (13816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10864 states to 10864 states and 13816 transitions. [2021-11-20 06:32:37,653 INFO L78 Accepts]: Start accepts. Automaton has 10864 states and 13816 transitions. Word has length 73 [2021-11-20 06:32:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:37,654 INFO L470 AbstractCegarLoop]: Abstraction has 10864 states and 13816 transitions. [2021-11-20 06:32:37,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10864 states and 13816 transitions. [2021-11-20 06:32:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 06:32:37,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:37,656 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] [2021-11-20 06:32:37,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 06:32:37,657 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:37,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1415466240, now seen corresponding path program 1 times [2021-11-20 06:32:37,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:37,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789203263] [2021-11-20 06:32:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:37,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:37,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:37,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789203263] [2021-11-20 06:32:37,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789203263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:32:37,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:32:37,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:32:37,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923447104] [2021-11-20 06:32:37,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:32:37,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:32:37,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:32:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:32:37,766 INFO L87 Difference]: Start difference. First operand 10864 states and 13816 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:40,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:32:40,955 INFO L93 Difference]: Finished difference Result 16004 states and 20492 transitions. [2021-11-20 06:32:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:32:40,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-20 06:32:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:32:40,975 INFO L225 Difference]: With dead ends: 16004 [2021-11-20 06:32:40,975 INFO L226 Difference]: Without dead ends: 13638 [2021-11-20 06:32:40,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:32:40,981 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 582 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:32:40,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 732 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:32:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13638 states. [2021-11-20 06:32:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13638 to 12414. [2021-11-20 06:32:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12414 states, 12413 states have (on average 1.269636671231773) internal successors, (15760), 12413 states have internal predecessors, (15760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 15760 transitions. [2021-11-20 06:32:43,959 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 15760 transitions. Word has length 74 [2021-11-20 06:32:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:32:43,959 INFO L470 AbstractCegarLoop]: Abstraction has 12414 states and 15760 transitions. [2021-11-20 06:32:43,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:32:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 15760 transitions. [2021-11-20 06:32:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-20 06:32:43,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:32:43,967 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] [2021-11-20 06:32:43,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 06:32:43,967 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:32:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:32:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1725210313, now seen corresponding path program 1 times [2021-11-20 06:32:43,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:32:43,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800128468] [2021-11-20 06:32:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:43,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:32:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:44,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:32:44,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800128468] [2021-11-20 06:32:44,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800128468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:32:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542052180] [2021-11-20 06:32:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:32:44,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:32:44,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:32:44,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:32:44,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:32:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:32:44,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:32:44,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:32:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:45,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:32:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:32:47,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542052180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:32:47,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:32:47,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 21 [2021-11-20 06:32:47,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75820473] [2021-11-20 06:32:47,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:32:47,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 06:32:47,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:32:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 06:32:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:32:47,093 INFO L87 Difference]: Start difference. First operand 12414 states and 15760 transitions. Second operand has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:14,760 INFO L93 Difference]: Finished difference Result 91396 states and 115643 transitions. [2021-11-20 06:33:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-20 06:33:14,761 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 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 92 [2021-11-20 06:33:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:14,874 INFO L225 Difference]: With dead ends: 91396 [2021-11-20 06:33:14,874 INFO L226 Difference]: Without dead ends: 79468 [2021-11-20 06:33:14,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7682 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3571, Invalid=16451, Unknown=0, NotChecked=0, Total=20022 [2021-11-20 06:33:14,901 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 5628 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5628 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:14,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5628 Valid, 3162 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2643 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:33:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79468 states. [2021-11-20 06:33:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79468 to 30134. [2021-11-20 06:33:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30134 states, 30133 states have (on average 1.272060531643049) internal successors, (38331), 30133 states have internal predecessors, (38331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30134 states to 30134 states and 38331 transitions. [2021-11-20 06:33:23,197 INFO L78 Accepts]: Start accepts. Automaton has 30134 states and 38331 transitions. Word has length 92 [2021-11-20 06:33:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:23,197 INFO L470 AbstractCegarLoop]: Abstraction has 30134 states and 38331 transitions. [2021-11-20 06:33:23,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 30134 states and 38331 transitions. [2021-11-20 06:33:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:33:23,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:23,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:23,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:23,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 06:33:23,405 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:33:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1489527117, now seen corresponding path program 1 times [2021-11-20 06:33:23,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:33:23,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371858216] [2021-11-20 06:33:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:23,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:33:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:23,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:33:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371858216] [2021-11-20 06:33:23,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371858216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:33:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048934293] [2021-11-20 06:33:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:23,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:33:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:33:23,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:33:23,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:33:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:23,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:33:23,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:24,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:24,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048934293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:33:24,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:33:24,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2021-11-20 06:33:24,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098076670] [2021-11-20 06:33:24,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:33:24,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:33:24,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:33:24,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:33:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:33:24,489 INFO L87 Difference]: Start difference. First operand 30134 states and 38331 transitions. Second operand has 14 states, 14 states have (on average 17.857142857142858) internal successors, (250), 14 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:34,828 INFO L93 Difference]: Finished difference Result 62771 states and 79621 transitions. [2021-11-20 06:33:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:33:34,834 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.857142857142858) internal successors, (250), 14 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-20 06:33:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:34,886 INFO L225 Difference]: With dead ends: 62771 [2021-11-20 06:33:34,886 INFO L226 Difference]: Without dead ends: 33127 [2021-11-20 06:33:34,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:33:34,920 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 3633 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3633 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:34,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3633 Valid, 870 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:33:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33127 states. [2021-11-20 06:33:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33127 to 24298. [2021-11-20 06:33:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24298 states, 24297 states have (on average 1.246532493723505) internal successors, (30287), 24297 states have internal predecessors, (30287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24298 states to 24298 states and 30287 transitions. [2021-11-20 06:33:42,001 INFO L78 Accepts]: Start accepts. Automaton has 24298 states and 30287 transitions. Word has length 94 [2021-11-20 06:33:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:42,001 INFO L470 AbstractCegarLoop]: Abstraction has 24298 states and 30287 transitions. [2021-11-20 06:33:42,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.857142857142858) internal successors, (250), 14 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 24298 states and 30287 transitions. [2021-11-20 06:33:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-20 06:33:42,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:42,008 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:33:42,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:42,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e31b269-1b46-4849-a1b7-6485e49df5fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-20 06:33:42,209 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 06:33:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash 900007329, now seen corresponding path program 1 times [2021-11-20 06:33:42,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:33:42,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729253831] [2021-11-20 06:33:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:42,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:33:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:42,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:33:42,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729253831] [2021-11-20 06:33:42,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729253831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:42,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:42,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:33:42,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109532346] [2021-11-20 06:33:42,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:42,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:33:42,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:33:42,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:33:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:33:42,267 INFO L87 Difference]: Start difference. First operand 24298 states and 30287 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:51,773 INFO L93 Difference]: Finished difference Result 54354 states and 67653 transitions. [2021-11-20 06:33:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:33:51,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-20 06:33:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:51,814 INFO L225 Difference]: With dead ends: 54354 [2021-11-20 06:33:51,814 INFO L226 Difference]: Without dead ends: 30594 [2021-11-20 06:33:51,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:33:51,837 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 601 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:51,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 472 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:33:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30594 states.