./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:50:17,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:50:17,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:50:17,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:50:17,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:50:17,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:50:17,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:50:17,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:50:17,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:50:17,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:50:17,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:50:17,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:50:17,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:50:17,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:50:17,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:50:17,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:50:17,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:50:17,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:50:17,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:50:17,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:50:17,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:50:17,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:50:17,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:50:17,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:50:17,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:50:17,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:50:17,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:50:17,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:50:17,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:50:17,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:50:17,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:50:17,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:50:17,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:50:17,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:50:17,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:50:17,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:50:17,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:50:17,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:50:17,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:50:17,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:50:17,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:50:17,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:50:17,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:50:17,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:50:17,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:50:17,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:50:17,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:50:17,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:50:17,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:50:17,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:50:17,964 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:50:17,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:50:17,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:50:17,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:50:17,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:50:17,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:50:17,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:50:17,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:50:17,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:50:17,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:50:17,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:50:17,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:50:17,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:50:17,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:50:17,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:50:17,967 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:50:17,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:50:17,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:50:17,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:50:17,967 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_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 [2021-12-06 21:50:18,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:50:18,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:50:18,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:50:18,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:50:18,182 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:50:18,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-06 21:50:18,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/data/e82f4f8a5/5b0db689ebbf4161882510510f28f4c9/FLAGcc068af61 [2021-12-06 21:50:18,670 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:50:18,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-06 21:50:18,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/data/e82f4f8a5/5b0db689ebbf4161882510510f28f4c9/FLAGcc068af61 [2021-12-06 21:50:18,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/data/e82f4f8a5/5b0db689ebbf4161882510510f28f4c9 [2021-12-06 21:50:18,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:50:18,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:50:18,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:50:18,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:50:18,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:50:18,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:50:18" (1/1) ... [2021-12-06 21:50:18,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0821ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:18, skipping insertion in model container [2021-12-06 21:50:18,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:50:18" (1/1) ... [2021-12-06 21:50:18,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:50:18,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:50:18,977 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2021-12-06 21:50:19,007 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2021-12-06 21:50:19,017 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2021-12-06 21:50:19,021 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2021-12-06 21:50:19,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:50:19,158 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:50:19,206 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2021-12-06 21:50:19,224 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2021-12-06 21:50:19,231 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2021-12-06 21:50:19,234 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_55617d3d-e133-47f6-a466-f1fd290b3650/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2021-12-06 21:50:19,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:50:19,343 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:50:19,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19 WrapperNode [2021-12-06 21:50:19,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:50:19,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:50:19,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:50:19,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:50:19,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,421 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2418 [2021-12-06 21:50:19,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:50:19,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:50:19,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:50:19,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:50:19,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:50:19,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:50:19,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:50:19,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:50:19,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (1/1) ... [2021-12-06 21:50:19,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:50:19,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:50:19,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:50:19,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:50:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:50:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:50:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:50:19,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:50:19,687 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:50:19,688 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:50:20,509 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:50:20,520 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:50:20,521 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 21:50:20,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:50:20 BoogieIcfgContainer [2021-12-06 21:50:20,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:50:20,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:50:20,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:50:20,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:50:20,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:50:18" (1/3) ... [2021-12-06 21:50:20,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c8f2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:50:20, skipping insertion in model container [2021-12-06 21:50:20,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:50:19" (2/3) ... [2021-12-06 21:50:20,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c8f2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:50:20, skipping insertion in model container [2021-12-06 21:50:20,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:50:20" (3/3) ... [2021-12-06 21:50:20,528 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-06 21:50:20,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:50:20,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-06 21:50:20,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:50:20,574 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:50:20,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 21:50:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 21:50:20,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:20,605 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] [2021-12-06 21:50:20,606 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)] === [2021-12-06 21:50:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:20,610 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2021-12-06 21:50:20,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:20,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307767018] [2021-12-06 21:50:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:20,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:20,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:20,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307767018] [2021-12-06 21:50:20,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307767018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:20,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:20,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:50:20,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670858102] [2021-12-06 21:50:20,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:50:20,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:50:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:50:20,879 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 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 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) [2021-12-06 21:50:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:21,225 INFO L93 Difference]: Finished difference Result 834 states and 1473 transitions. [2021-12-06 21:50:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:50:21,227 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 [2021-12-06 21:50:21,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:21,241 INFO L225 Difference]: With dead ends: 834 [2021-12-06 21:50:21,242 INFO L226 Difference]: Without dead ends: 485 [2021-12-06 21:50:21,246 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 [2021-12-06 21:50:21,250 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 2286 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:21,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2286 Valid, 577 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:50:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-06 21:50:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2021-12-06 21:50:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 475 states have (on average 1.3747368421052633) internal successors, (653), 478 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 653 transitions. [2021-12-06 21:50:21,308 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 653 transitions. Word has length 50 [2021-12-06 21:50:21,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:21,309 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 653 transitions. [2021-12-06 21:50:21,309 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) [2021-12-06 21:50:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 653 transitions. [2021-12-06 21:50:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 21:50:21,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:21,312 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] [2021-12-06 21:50:21,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:50:21,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:21,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:21,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2021-12-06 21:50:21,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:21,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625008189] [2021-12-06 21:50:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:21,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:21,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:21,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625008189] [2021-12-06 21:50:21,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625008189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:21,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:21,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:21,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122877804] [2021-12-06 21:50:21,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:21,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:21,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:21,389 INFO L87 Difference]: Start difference. First operand 479 states and 653 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-06 21:50:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:21,445 INFO L93 Difference]: Finished difference Result 940 states and 1338 transitions. [2021-12-06 21:50:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2021-12-06 21:50:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:21,448 INFO L225 Difference]: With dead ends: 940 [2021-12-06 21:50:21,449 INFO L226 Difference]: Without dead ends: 686 [2021-12-06 21:50:21,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:21,451 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 272 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:21,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 860 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-06 21:50:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 680. [2021-12-06 21:50:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 676 states have (on average 1.4068047337278107) internal successors, (951), 679 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 951 transitions. [2021-12-06 21:50:21,490 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 951 transitions. Word has length 51 [2021-12-06 21:50:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:21,491 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 951 transitions. [2021-12-06 21:50:21,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-06 21:50:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 951 transitions. [2021-12-06 21:50:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 21:50:21,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:21,494 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] [2021-12-06 21:50:21,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:50:21,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2021-12-06 21:50:21,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:21,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451313686] [2021-12-06 21:50:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:21,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:21,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:21,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451313686] [2021-12-06 21:50:21,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451313686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:21,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:21,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:21,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170642940] [2021-12-06 21:50:21,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:21,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:21,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:21,557 INFO L87 Difference]: Start difference. First operand 680 states and 951 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-06 21:50:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:21,612 INFO L93 Difference]: Finished difference Result 1566 states and 2244 transitions. [2021-12-06 21:50:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2021-12-06 21:50:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:21,619 INFO L225 Difference]: With dead ends: 1566 [2021-12-06 21:50:21,620 INFO L226 Difference]: Without dead ends: 1101 [2021-12-06 21:50:21,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:21,622 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 366 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 936 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 [2021-12-06 21:50:21,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 936 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:21,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-12-06 21:50:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1091. [2021-12-06 21:50:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1087 states have (on average 1.405703771849126) internal successors, (1528), 1090 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1528 transitions. [2021-12-06 21:50:21,694 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1528 transitions. Word has length 51 [2021-12-06 21:50:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:21,695 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1528 transitions. [2021-12-06 21:50:21,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-06 21:50:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1528 transitions. [2021-12-06 21:50:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 21:50:21,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:21,697 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] [2021-12-06 21:50:21,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:50:21,698 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)] === [2021-12-06 21:50:21,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:21,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2021-12-06 21:50:21,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988928566] [2021-12-06 21:50:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:21,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:21,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:21,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988928566] [2021-12-06 21:50:21,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988928566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:21,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:21,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:21,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584994864] [2021-12-06 21:50:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:21,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:21,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:21,769 INFO L87 Difference]: Start difference. First operand 1091 states and 1528 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-06 21:50:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:21,862 INFO L93 Difference]: Finished difference Result 2383 states and 3421 transitions. [2021-12-06 21:50:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2021-12-06 21:50:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:21,870 INFO L225 Difference]: With dead ends: 2383 [2021-12-06 21:50:21,870 INFO L226 Difference]: Without dead ends: 1722 [2021-12-06 21:50:21,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:21,872 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 265 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:21,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 928 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:21,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-06 21:50:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1715. [2021-12-06 21:50:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1711 states have (on average 1.4108708357685564) internal successors, (2414), 1714 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2414 transitions. [2021-12-06 21:50:21,939 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2414 transitions. Word has length 51 [2021-12-06 21:50:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:21,940 INFO L470 AbstractCegarLoop]: Abstraction has 1715 states and 2414 transitions. [2021-12-06 21:50:21,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-06 21:50:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2414 transitions. [2021-12-06 21:50:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 21:50:21,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:21,942 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] [2021-12-06 21:50:21,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:50:21,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:21,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2021-12-06 21:50:21,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:21,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723319931] [2021-12-06 21:50:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:21,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:22,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:22,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723319931] [2021-12-06 21:50:22,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723319931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:22,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:22,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:50:22,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873518531] [2021-12-06 21:50:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:22,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:50:22,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:50:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:50:22,002 INFO L87 Difference]: Start difference. First operand 1715 states and 2414 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) [2021-12-06 21:50:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:22,296 INFO L93 Difference]: Finished difference Result 3784 states and 5391 transitions. [2021-12-06 21:50:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:50:22,296 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 [2021-12-06 21:50:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:22,305 INFO L225 Difference]: With dead ends: 3784 [2021-12-06 21:50:22,306 INFO L226 Difference]: Without dead ends: 2240 [2021-12-06 21:50:22,308 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 [2021-12-06 21:50:22,309 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 1539 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:22,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 371 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:50:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-12-06 21:50:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2226. [2021-12-06 21:50:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 2222 states have (on average 1.4185418541854184) internal successors, (3152), 2225 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3152 transitions. [2021-12-06 21:50:22,399 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3152 transitions. Word has length 51 [2021-12-06 21:50:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:22,399 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3152 transitions. [2021-12-06 21:50:22,399 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) [2021-12-06 21:50:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3152 transitions. [2021-12-06 21:50:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 21:50:22,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:22,401 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] [2021-12-06 21:50:22,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:50:22,401 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2021-12-06 21:50:22,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:22,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979911601] [2021-12-06 21:50:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:22,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:22,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:22,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979911601] [2021-12-06 21:50:22,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979911601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:22,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:22,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:50:22,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136561] [2021-12-06 21:50:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:22,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:50:22,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:50:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:50:22,461 INFO L87 Difference]: Start difference. First operand 2226 states and 3152 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2021-12-06 21:50:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:22,768 INFO L93 Difference]: Finished difference Result 5039 states and 7185 transitions. [2021-12-06 21:50:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:50:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 [2021-12-06 21:50:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:22,785 INFO L225 Difference]: With dead ends: 5039 [2021-12-06 21:50:22,786 INFO L226 Difference]: Without dead ends: 2984 [2021-12-06 21:50:22,788 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 [2021-12-06 21:50:22,789 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1382 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:22,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 340 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:50:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-12-06 21:50:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2965. [2021-12-06 21:50:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2961 states have (on average 1.414724755150287) internal successors, (4189), 2964 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4189 transitions. [2021-12-06 21:50:22,903 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4189 transitions. Word has length 52 [2021-12-06 21:50:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:22,903 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4189 transitions. [2021-12-06 21:50:22,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2021-12-06 21:50:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4189 transitions. [2021-12-06 21:50:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 21:50:22,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:22,905 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] [2021-12-06 21:50:22,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:50:22,906 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2021-12-06 21:50:22,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:22,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112169191] [2021-12-06 21:50:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:22,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:22,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:22,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112169191] [2021-12-06 21:50:22,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112169191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:22,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:22,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:50:22,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906894871] [2021-12-06 21:50:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:22,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:50:22,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:50:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:50:22,979 INFO L87 Difference]: Start difference. First operand 2965 states and 4189 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) [2021-12-06 21:50:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:23,709 INFO L93 Difference]: Finished difference Result 9614 states and 13808 transitions. [2021-12-06 21:50:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:50:23,710 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 [2021-12-06 21:50:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:23,746 INFO L225 Difference]: With dead ends: 9614 [2021-12-06 21:50:23,746 INFO L226 Difference]: Without dead ends: 8311 [2021-12-06 21:50:23,749 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 [2021-12-06 21:50:23,750 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2747 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:23,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 604 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:50:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2021-12-06 21:50:23,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 2979. [2021-12-06 21:50:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2975 states have (on average 1.4141176470588235) internal successors, (4207), 2978 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4207 transitions. [2021-12-06 21:50:23,954 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4207 transitions. Word has length 53 [2021-12-06 21:50:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:23,954 INFO L470 AbstractCegarLoop]: Abstraction has 2979 states and 4207 transitions. [2021-12-06 21:50:23,955 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) [2021-12-06 21:50:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4207 transitions. [2021-12-06 21:50:23,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 21:50:23,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:23,957 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] [2021-12-06 21:50:23,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:50:23,957 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2021-12-06 21:50:23,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:23,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725637720] [2021-12-06 21:50:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:23,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:24,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725637720] [2021-12-06 21:50:24,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725637720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:24,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:24,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:50:24,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198388494] [2021-12-06 21:50:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:50:24,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:50:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:50:24,019 INFO L87 Difference]: Start difference. First operand 2979 states and 4207 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) [2021-12-06 21:50:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:24,987 INFO L93 Difference]: Finished difference Result 10647 states and 15322 transitions. [2021-12-06 21:50:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:50:24,988 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 [2021-12-06 21:50:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:25,027 INFO L225 Difference]: With dead ends: 10647 [2021-12-06 21:50:25,027 INFO L226 Difference]: Without dead ends: 9535 [2021-12-06 21:50:25,032 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 [2021-12-06 21:50:25,033 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 2048 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:25,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 765 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:50:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2021-12-06 21:50:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 3001. [2021-12-06 21:50:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2997 states have (on average 1.4140807474140809) internal successors, (4238), 3000 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4238 transitions. [2021-12-06 21:50:25,263 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4238 transitions. Word has length 53 [2021-12-06 21:50:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:25,264 INFO L470 AbstractCegarLoop]: Abstraction has 3001 states and 4238 transitions. [2021-12-06 21:50:25,264 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) [2021-12-06 21:50:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4238 transitions. [2021-12-06 21:50:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 21:50:25,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:25,266 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] [2021-12-06 21:50:25,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:50:25,266 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2021-12-06 21:50:25,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:25,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908892117] [2021-12-06 21:50:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:25,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:25,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:25,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908892117] [2021-12-06 21:50:25,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908892117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:25,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:25,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:50:25,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767380359] [2021-12-06 21:50:25,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:25,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:50:25,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:50:25,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:50:25,319 INFO L87 Difference]: Start difference. First operand 3001 states and 4238 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) [2021-12-06 21:50:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:26,314 INFO L93 Difference]: Finished difference Result 12469 states and 17906 transitions. [2021-12-06 21:50:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:50:26,315 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 [2021-12-06 21:50:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:26,333 INFO L225 Difference]: With dead ends: 12469 [2021-12-06 21:50:26,334 INFO L226 Difference]: Without dead ends: 11501 [2021-12-06 21:50:26,336 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 [2021-12-06 21:50:26,337 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 3205 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:26,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 658 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:50:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11501 states. [2021-12-06 21:50:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11501 to 3035. [2021-12-06 21:50:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3031 states have (on average 1.4127350709336852) internal successors, (4282), 3034 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4282 transitions. [2021-12-06 21:50:26,582 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4282 transitions. Word has length 53 [2021-12-06 21:50:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:26,582 INFO L470 AbstractCegarLoop]: Abstraction has 3035 states and 4282 transitions. [2021-12-06 21:50:26,582 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) [2021-12-06 21:50:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4282 transitions. [2021-12-06 21:50:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 21:50:26,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:26,585 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] [2021-12-06 21:50:26,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:50:26,585 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)] === [2021-12-06 21:50:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2021-12-06 21:50:26,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:26,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290630818] [2021-12-06 21:50:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:26,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:26,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:26,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290630818] [2021-12-06 21:50:26,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290630818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:26,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:26,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:50:26,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203542486] [2021-12-06 21:50:26,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:26,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:50:26,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:50:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:50:26,687 INFO L87 Difference]: Start difference. First operand 3035 states and 4282 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) [2021-12-06 21:50:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:27,464 INFO L93 Difference]: Finished difference Result 7469 states and 10748 transitions. [2021-12-06 21:50:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:50:27,465 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 [2021-12-06 21:50:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:27,482 INFO L225 Difference]: With dead ends: 7469 [2021-12-06 21:50:27,482 INFO L226 Difference]: Without dead ends: 5520 [2021-12-06 21:50:27,484 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 [2021-12-06 21:50:27,485 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 2467 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:27,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 946 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:50:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2021-12-06 21:50:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 2945. [2021-12-06 21:50:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2941 states have (on average 1.4124447466848011) internal successors, (4154), 2944 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 4154 transitions. [2021-12-06 21:50:27,686 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 4154 transitions. Word has length 54 [2021-12-06 21:50:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:27,686 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 4154 transitions. [2021-12-06 21:50:27,686 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) [2021-12-06 21:50:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 4154 transitions. [2021-12-06 21:50:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 21:50:27,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:27,688 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] [2021-12-06 21:50:27,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:50:27,688 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)] === [2021-12-06 21:50:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2021-12-06 21:50:27,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:27,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141950325] [2021-12-06 21:50:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:27,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:27,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:27,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141950325] [2021-12-06 21:50:27,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141950325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:27,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:27,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:50:27,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51732997] [2021-12-06 21:50:27,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:27,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:50:27,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:27,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:50:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:50:27,776 INFO L87 Difference]: Start difference. First operand 2945 states and 4154 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) [2021-12-06 21:50:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:28,826 INFO L93 Difference]: Finished difference Result 8199 states and 11783 transitions. [2021-12-06 21:50:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:50:28,827 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 [2021-12-06 21:50:28,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:28,838 INFO L225 Difference]: With dead ends: 8199 [2021-12-06 21:50:28,838 INFO L226 Difference]: Without dead ends: 6410 [2021-12-06 21:50:28,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-06 21:50:28,841 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 2036 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:28,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2036 Valid, 1491 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:50:28,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2021-12-06 21:50:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 2916. [2021-12-06 21:50:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.4124313186813187) internal successors, (4113), 2915 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4113 transitions. [2021-12-06 21:50:29,076 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4113 transitions. Word has length 54 [2021-12-06 21:50:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:29,077 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4113 transitions. [2021-12-06 21:50:29,077 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) [2021-12-06 21:50:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4113 transitions. [2021-12-06 21:50:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 21:50:29,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:29,078 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] [2021-12-06 21:50:29,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:50:29,079 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)] === [2021-12-06 21:50:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2021-12-06 21:50:29,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:29,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905778690] [2021-12-06 21:50:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:29,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:29,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:29,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905778690] [2021-12-06 21:50:29,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905778690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:29,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:29,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:50:29,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836163380] [2021-12-06 21:50:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:29,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:50:29,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:50:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:50:29,144 INFO L87 Difference]: Start difference. First operand 2916 states and 4113 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) [2021-12-06 21:50:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:30,267 INFO L93 Difference]: Finished difference Result 7120 states and 10242 transitions. [2021-12-06 21:50:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:50:30,268 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 [2021-12-06 21:50:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:30,274 INFO L225 Difference]: With dead ends: 7120 [2021-12-06 21:50:30,274 INFO L226 Difference]: Without dead ends: 7115 [2021-12-06 21:50:30,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-06 21:50:30,276 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 1797 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:30,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1797 Valid, 1233 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:50:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2021-12-06 21:50:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 2916. [2021-12-06 21:50:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.4117445054945055) internal successors, (4111), 2915 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4111 transitions. [2021-12-06 21:50:30,567 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4111 transitions. Word has length 54 [2021-12-06 21:50:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:30,567 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4111 transitions. [2021-12-06 21:50:30,568 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) [2021-12-06 21:50:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4111 transitions. [2021-12-06 21:50:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 21:50:30,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:30,569 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] [2021-12-06 21:50:30,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:50:30,570 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:30,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:30,570 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2021-12-06 21:50:30,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:30,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522496403] [2021-12-06 21:50:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:30,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:30,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:30,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522496403] [2021-12-06 21:50:30,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522496403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:30,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:30,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:30,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128874333] [2021-12-06 21:50:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:30,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:30,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:30,601 INFO L87 Difference]: Start difference. First operand 2916 states and 4111 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) [2021-12-06 21:50:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:30,853 INFO L93 Difference]: Finished difference Result 4186 states and 5952 transitions. [2021-12-06 21:50:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:30,853 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 [2021-12-06 21:50:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:30,855 INFO L225 Difference]: With dead ends: 4186 [2021-12-06 21:50:30,855 INFO L226 Difference]: Without dead ends: 2923 [2021-12-06 21:50:30,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:30,857 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 226 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 804 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 [2021-12-06 21:50:30,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 804 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-12-06 21:50:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2916. [2021-12-06 21:50:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3980082417582418) internal successors, (4071), 2915 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4071 transitions. [2021-12-06 21:50:31,095 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4071 transitions. Word has length 55 [2021-12-06 21:50:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:31,095 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4071 transitions. [2021-12-06 21:50:31,095 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) [2021-12-06 21:50:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4071 transitions. [2021-12-06 21:50:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 21:50:31,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:31,097 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] [2021-12-06 21:50:31,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:50:31,098 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2021-12-06 21:50:31,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:31,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530348158] [2021-12-06 21:50:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:31,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:31,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:31,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530348158] [2021-12-06 21:50:31,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530348158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:31,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:31,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:31,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592997069] [2021-12-06 21:50:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:31,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:31,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:31,136 INFO L87 Difference]: Start difference. First operand 2916 states and 4071 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) [2021-12-06 21:50:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:31,388 INFO L93 Difference]: Finished difference Result 4255 states and 5988 transitions. [2021-12-06 21:50:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:31,389 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 [2021-12-06 21:50:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:31,391 INFO L225 Difference]: With dead ends: 4255 [2021-12-06 21:50:31,391 INFO L226 Difference]: Without dead ends: 2922 [2021-12-06 21:50:31,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:31,393 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 242 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 805 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 [2021-12-06 21:50:31,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-12-06 21:50:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2916. [2021-12-06 21:50:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3856456043956045) internal successors, (4035), 2915 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4035 transitions. [2021-12-06 21:50:31,629 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4035 transitions. Word has length 55 [2021-12-06 21:50:31,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:31,629 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4035 transitions. [2021-12-06 21:50:31,629 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) [2021-12-06 21:50:31,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4035 transitions. [2021-12-06 21:50:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 21:50:31,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:31,631 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] [2021-12-06 21:50:31,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:50:31,631 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2021-12-06 21:50:31,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:31,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407938327] [2021-12-06 21:50:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:31,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:31,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:31,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407938327] [2021-12-06 21:50:31,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407938327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:31,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:31,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:31,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733020] [2021-12-06 21:50:31,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:31,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:31,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:31,659 INFO L87 Difference]: Start difference. First operand 2916 states and 4035 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) [2021-12-06 21:50:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:31,905 INFO L93 Difference]: Finished difference Result 3997 states and 5541 transitions. [2021-12-06 21:50:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:31,906 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 [2021-12-06 21:50:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:31,909 INFO L225 Difference]: With dead ends: 3997 [2021-12-06 21:50:31,909 INFO L226 Difference]: Without dead ends: 2907 [2021-12-06 21:50:31,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:31,910 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 261 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 816 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 [2021-12-06 21:50:31,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 816 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:31,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2021-12-06 21:50:32,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2901. [2021-12-06 21:50:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2897 states have (on average 1.3583016914049015) internal successors, (3935), 2900 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 3935 transitions. [2021-12-06 21:50:32,197 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 3935 transitions. Word has length 55 [2021-12-06 21:50:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:32,197 INFO L470 AbstractCegarLoop]: Abstraction has 2901 states and 3935 transitions. [2021-12-06 21:50:32,197 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) [2021-12-06 21:50:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 3935 transitions. [2021-12-06 21:50:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 21:50:32,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:32,200 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] [2021-12-06 21:50:32,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:50:32,200 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2021-12-06 21:50:32,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:32,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511377531] [2021-12-06 21:50:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:32,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:32,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511377531] [2021-12-06 21:50:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511377531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:32,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:32,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:32,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906561781] [2021-12-06 21:50:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:32,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:32,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:32,234 INFO L87 Difference]: Start difference. First operand 2901 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:32,584 INFO L93 Difference]: Finished difference Result 4576 states and 6264 transitions. [2021-12-06 21:50:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-12-06 21:50:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:32,587 INFO L225 Difference]: With dead ends: 4576 [2021-12-06 21:50:32,587 INFO L226 Difference]: Without dead ends: 3319 [2021-12-06 21:50:32,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:32,589 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 326 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:32,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 524 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-12-06 21:50:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2719. [2021-12-06 21:50:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2715 states have (on average 1.3624309392265193) internal successors, (3699), 2718 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3699 transitions. [2021-12-06 21:50:32,824 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3699 transitions. Word has length 56 [2021-12-06 21:50:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:32,824 INFO L470 AbstractCegarLoop]: Abstraction has 2719 states and 3699 transitions. [2021-12-06 21:50:32,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3699 transitions. [2021-12-06 21:50:32,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 21:50:32,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:32,826 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] [2021-12-06 21:50:32,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:50:32,826 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2021-12-06 21:50:32,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:32,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226214868] [2021-12-06 21:50:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:32,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:32,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226214868] [2021-12-06 21:50:32,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226214868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:32,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:32,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:32,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178754512] [2021-12-06 21:50:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:32,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:32,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:32,851 INFO L87 Difference]: Start difference. First operand 2719 states and 3699 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) [2021-12-06 21:50:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:33,178 INFO L93 Difference]: Finished difference Result 4995 states and 6854 transitions. [2021-12-06 21:50:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:33,179 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 [2021-12-06 21:50:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:33,181 INFO L225 Difference]: With dead ends: 4995 [2021-12-06 21:50:33,181 INFO L226 Difference]: Without dead ends: 3334 [2021-12-06 21:50:33,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:33,183 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 302 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 462 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-12-06 21:50:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2583. [2021-12-06 21:50:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2579 states have (on average 1.3660333462582397) internal successors, (3523), 2582 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 3523 transitions. [2021-12-06 21:50:33,406 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 3523 transitions. Word has length 57 [2021-12-06 21:50:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:33,406 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 3523 transitions. [2021-12-06 21:50:33,406 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) [2021-12-06 21:50:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 3523 transitions. [2021-12-06 21:50:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 21:50:33,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:33,407 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] [2021-12-06 21:50:33,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:50:33,408 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2021-12-06 21:50:33,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:33,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022989453] [2021-12-06 21:50:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:33,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:33,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:33,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022989453] [2021-12-06 21:50:33,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022989453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:33,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:33,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:50:33,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972304186] [2021-12-06 21:50:33,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:33,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:50:33,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:33,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:50:33,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:50:33,629 INFO L87 Difference]: Start difference. First operand 2583 states and 3523 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) [2021-12-06 21:50:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:34,747 INFO L93 Difference]: Finished difference Result 4845 states and 6691 transitions. [2021-12-06 21:50:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:50:34,748 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 [2021-12-06 21:50:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:34,752 INFO L225 Difference]: With dead ends: 4845 [2021-12-06 21:50:34,752 INFO L226 Difference]: Without dead ends: 4439 [2021-12-06 21:50:34,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:50:34,754 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 2243 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:34,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2243 Valid, 3516 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:50:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2021-12-06 21:50:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 2537. [2021-12-06 21:50:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2534 states have (on average 1.3677979479084452) internal successors, (3466), 2536 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3466 transitions. [2021-12-06 21:50:35,062 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3466 transitions. Word has length 57 [2021-12-06 21:50:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:35,062 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3466 transitions. [2021-12-06 21:50:35,062 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) [2021-12-06 21:50:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3466 transitions. [2021-12-06 21:50:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 21:50:35,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:35,064 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] [2021-12-06 21:50:35,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:50:35,064 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2021-12-06 21:50:35,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431087620] [2021-12-06 21:50:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:35,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:35,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:35,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431087620] [2021-12-06 21:50:35,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431087620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:35,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:35,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:50:35,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818695262] [2021-12-06 21:50:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:35,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:50:35,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:50:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:50:35,281 INFO L87 Difference]: Start difference. First operand 2537 states and 3466 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) [2021-12-06 21:50:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:36,336 INFO L93 Difference]: Finished difference Result 3774 states and 5198 transitions. [2021-12-06 21:50:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:50:36,336 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 [2021-12-06 21:50:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:36,340 INFO L225 Difference]: With dead ends: 3774 [2021-12-06 21:50:36,340 INFO L226 Difference]: Without dead ends: 3666 [2021-12-06 21:50:36,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-06 21:50:36,341 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 2260 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:36,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 2716 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:50:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-12-06 21:50:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 2525. [2021-12-06 21:50:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2523 states have (on average 1.3682124455013873) internal successors, (3452), 2524 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3452 transitions. [2021-12-06 21:50:36,599 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3452 transitions. Word has length 57 [2021-12-06 21:50:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:36,600 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 3452 transitions. [2021-12-06 21:50:36,600 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) [2021-12-06 21:50:36,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3452 transitions. [2021-12-06 21:50:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 21:50:36,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:36,601 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, 1, 1] [2021-12-06 21:50:36,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:50:36,601 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:50:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2021-12-06 21:50:36,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:36,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441781417] [2021-12-06 21:50:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:36,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:36,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:36,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441781417] [2021-12-06 21:50:36,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441781417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:36,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:36,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:50:36,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600997678] [2021-12-06 21:50:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:36,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:50:36,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:50:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:50:36,788 INFO L87 Difference]: Start difference. First operand 2525 states and 3452 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) [2021-12-06 21:50:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:38,073 INFO L93 Difference]: Finished difference Result 5023 states and 6953 transitions. [2021-12-06 21:50:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 21:50:38,073 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 [2021-12-06 21:50:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:38,077 INFO L225 Difference]: With dead ends: 5023 [2021-12-06 21:50:38,077 INFO L226 Difference]: Without dead ends: 4669 [2021-12-06 21:50:38,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2021-12-06 21:50:38,078 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 2819 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:38,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 2258 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:50:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4669 states. [2021-12-06 21:50:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4669 to 2474. [2021-12-06 21:50:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2473 states have (on average 1.3708046906591185) internal successors, (3390), 2473 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3390 transitions. [2021-12-06 21:50:38,378 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3390 transitions. Word has length 57 [2021-12-06 21:50:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:38,378 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 3390 transitions. [2021-12-06 21:50:38,378 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) [2021-12-06 21:50:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3390 transitions. [2021-12-06 21:50:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 21:50:38,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:38,381 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] [2021-12-06 21:50:38,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:50:38,381 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)] === [2021-12-06 21:50:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2021-12-06 21:50:38,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:38,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126096612] [2021-12-06 21:50:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:38,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:38,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126096612] [2021-12-06 21:50:38,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126096612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:38,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:38,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:50:38,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226135305] [2021-12-06 21:50:38,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:38,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:50:38,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:50:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:50:38,414 INFO L87 Difference]: Start difference. First operand 2474 states and 3390 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) [2021-12-06 21:50:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:39,058 INFO L93 Difference]: Finished difference Result 5976 states and 8396 transitions. [2021-12-06 21:50:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:50:39,059 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 [2021-12-06 21:50:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:39,062 INFO L225 Difference]: With dead ends: 5976 [2021-12-06 21:50:39,063 INFO L226 Difference]: Without dead ends: 4465 [2021-12-06 21:50:39,064 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 [2021-12-06 21:50:39,065 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 1081 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 643 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 [2021-12-06 21:50:39,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 643 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2021-12-06 21:50:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 3822. [2021-12-06 21:50:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3821 states have (on average 1.3726773096048155) internal successors, (5245), 3821 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 5245 transitions. [2021-12-06 21:50:39,581 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 5245 transitions. Word has length 66 [2021-12-06 21:50:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:39,581 INFO L470 AbstractCegarLoop]: Abstraction has 3822 states and 5245 transitions. [2021-12-06 21:50:39,581 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) [2021-12-06 21:50:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 5245 transitions. [2021-12-06 21:50:39,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 21:50:39,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:39,584 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] [2021-12-06 21:50:39,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 21:50:39,584 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)] === [2021-12-06 21:50:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2021-12-06 21:50:39,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:39,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565735411] [2021-12-06 21:50:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:39,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:39,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:39,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565735411] [2021-12-06 21:50:39,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565735411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:39,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:39,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:50:39,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312243478] [2021-12-06 21:50:39,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:39,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:50:39,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:39,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:50:39,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:50:39,625 INFO L87 Difference]: Start difference. First operand 3822 states and 5245 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) [2021-12-06 21:50:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:40,146 INFO L93 Difference]: Finished difference Result 3828 states and 5248 transitions. [2021-12-06 21:50:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:50:40,146 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 [2021-12-06 21:50:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:40,150 INFO L225 Difference]: With dead ends: 3828 [2021-12-06 21:50:40,150 INFO L226 Difference]: Without dead ends: 3357 [2021-12-06 21:50:40,151 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 [2021-12-06 21:50:40,151 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 674 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:40,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 797 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:50:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-12-06 21:50:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3353. [2021-12-06 21:50:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 1.3767899761336515) internal successors, (4615), 3352 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4615 transitions. [2021-12-06 21:50:40,618 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4615 transitions. Word has length 67 [2021-12-06 21:50:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:40,618 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 4615 transitions. [2021-12-06 21:50:40,618 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) [2021-12-06 21:50:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4615 transitions. [2021-12-06 21:50:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 21:50:40,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:40,621 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] [2021-12-06 21:50:40,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 21:50:40,621 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)] === [2021-12-06 21:50:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2021-12-06 21:50:40,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:40,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965496811] [2021-12-06 21:50:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:40,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:40,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:40,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965496811] [2021-12-06 21:50:40,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965496811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:40,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:40,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:40,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581921049] [2021-12-06 21:50:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:40,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:40,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:40,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:40,652 INFO L87 Difference]: Start difference. First operand 3353 states and 4615 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) [2021-12-06 21:50:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:41,580 INFO L93 Difference]: Finished difference Result 7961 states and 11093 transitions. [2021-12-06 21:50:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:41,580 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 [2021-12-06 21:50:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:41,585 INFO L225 Difference]: With dead ends: 7961 [2021-12-06 21:50:41,586 INFO L226 Difference]: Without dead ends: 5557 [2021-12-06 21:50:41,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:41,589 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 125 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 561 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 [2021-12-06 21:50:41,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 561 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2021-12-06 21:50:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5187. [2021-12-06 21:50:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 1.3831469340532203) internal successors, (7173), 5186 states have internal predecessors, (7173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 7173 transitions. [2021-12-06 21:50:42,361 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 7173 transitions. Word has length 68 [2021-12-06 21:50:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:42,361 INFO L470 AbstractCegarLoop]: Abstraction has 5187 states and 7173 transitions. [2021-12-06 21:50:42,361 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) [2021-12-06 21:50:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 7173 transitions. [2021-12-06 21:50:42,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 21:50:42,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:42,363 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] [2021-12-06 21:50:42,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 21:50:42,364 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)] === [2021-12-06 21:50:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2021-12-06 21:50:42,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:42,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455534682] [2021-12-06 21:50:42,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:42,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:42,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:42,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455534682] [2021-12-06 21:50:42,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455534682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:42,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:42,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:42,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032661821] [2021-12-06 21:50:42,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:42,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:42,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:42,391 INFO L87 Difference]: Start difference. First operand 5187 states and 7173 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) [2021-12-06 21:50:43,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:43,728 INFO L93 Difference]: Finished difference Result 12979 states and 18019 transitions. [2021-12-06 21:50:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:43,729 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 [2021-12-06 21:50:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:43,737 INFO L225 Difference]: With dead ends: 12979 [2021-12-06 21:50:43,737 INFO L226 Difference]: Without dead ends: 8513 [2021-12-06 21:50:43,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:43,741 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 120 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 557 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 [2021-12-06 21:50:43,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 557 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8513 states. [2021-12-06 21:50:44,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8513 to 7879. [2021-12-06 21:50:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7879 states, 7878 states have (on average 1.3682406702208683) internal successors, (10779), 7878 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7879 states to 7879 states and 10779 transitions. [2021-12-06 21:50:44,975 INFO L78 Accepts]: Start accepts. Automaton has 7879 states and 10779 transitions. Word has length 70 [2021-12-06 21:50:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:44,975 INFO L470 AbstractCegarLoop]: Abstraction has 7879 states and 10779 transitions. [2021-12-06 21:50:44,976 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) [2021-12-06 21:50:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7879 states and 10779 transitions. [2021-12-06 21:50:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 21:50:44,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:44,978 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] [2021-12-06 21:50:44,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 21:50:44,978 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)] === [2021-12-06 21:50:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2021-12-06 21:50:44,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:44,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608301347] [2021-12-06 21:50:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:44,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:45,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:45,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608301347] [2021-12-06 21:50:45,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608301347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:45,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:45,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:45,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122699885] [2021-12-06 21:50:45,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:45,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:45,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:45,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:45,004 INFO L87 Difference]: Start difference. First operand 7879 states and 10779 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) [2021-12-06 21:50:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:47,327 INFO L93 Difference]: Finished difference Result 21395 states and 29429 transitions. [2021-12-06 21:50:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:50:47,328 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 [2021-12-06 21:50:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:47,341 INFO L225 Difference]: With dead ends: 21395 [2021-12-06 21:50:47,341 INFO L226 Difference]: Without dead ends: 14237 [2021-12-06 21:50:47,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:47,347 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 99 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 532 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 [2021-12-06 21:50:47,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 532 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14237 states. [2021-12-06 21:50:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14237 to 13019. [2021-12-06 21:50:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13019 states, 13018 states have (on average 1.3648025810416347) internal successors, (17767), 13018 states have internal predecessors, (17767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13019 states to 13019 states and 17767 transitions. [2021-12-06 21:50:49,410 INFO L78 Accepts]: Start accepts. Automaton has 13019 states and 17767 transitions. Word has length 70 [2021-12-06 21:50:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:49,410 INFO L470 AbstractCegarLoop]: Abstraction has 13019 states and 17767 transitions. [2021-12-06 21:50:49,410 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) [2021-12-06 21:50:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 13019 states and 17767 transitions. [2021-12-06 21:50:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 21:50:49,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:49,412 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] [2021-12-06 21:50:49,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 21:50:49,413 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)] === [2021-12-06 21:50:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2021-12-06 21:50:49,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:49,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213317322] [2021-12-06 21:50:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:49,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:49,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:49,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213317322] [2021-12-06 21:50:49,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213317322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:49,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:49,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:50:49,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348774480] [2021-12-06 21:50:49,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:49,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:50:49,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:50:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:50:49,457 INFO L87 Difference]: Start difference. First operand 13019 states and 17767 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) [2021-12-06 21:50:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:54,508 INFO L93 Difference]: Finished difference Result 27997 states and 37556 transitions. [2021-12-06 21:50:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:50:54,509 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 [2021-12-06 21:50:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:54,537 INFO L225 Difference]: With dead ends: 27997 [2021-12-06 21:50:54,537 INFO L226 Difference]: Without dead ends: 27995 [2021-12-06 21:50:54,541 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 [2021-12-06 21:50:54,542 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 348 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:54,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1318 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:50:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27995 states. [2021-12-06 21:50:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27995 to 14363. [2021-12-06 21:50:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14363 states, 14362 states have (on average 1.3306642528895698) internal successors, (19111), 14362 states have internal predecessors, (19111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:50:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14363 states to 14363 states and 19111 transitions. [2021-12-06 21:50:57,303 INFO L78 Accepts]: Start accepts. Automaton has 14363 states and 19111 transitions. Word has length 72 [2021-12-06 21:50:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:50:57,304 INFO L470 AbstractCegarLoop]: Abstraction has 14363 states and 19111 transitions. [2021-12-06 21:50:57,304 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) [2021-12-06 21:50:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 14363 states and 19111 transitions. [2021-12-06 21:50:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 21:50:57,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:50:57,306 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] [2021-12-06 21:50:57,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 21:50:57,306 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)] === [2021-12-06 21:50:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:50:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2021-12-06 21:50:57,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:50:57,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380511859] [2021-12-06 21:50:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:50:57,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:50:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:50:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:50:57,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:50:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380511859] [2021-12-06 21:50:57,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380511859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:50:57,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:50:57,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:50:57,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482103438] [2021-12-06 21:50:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:50:57,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:50:57,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:50:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:50:57,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:50:57,330 INFO L87 Difference]: Start difference. First operand 14363 states and 19111 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) [2021-12-06 21:51:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:51:01,222 INFO L93 Difference]: Finished difference Result 34887 states and 46481 transitions. [2021-12-06 21:51:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:51:01,223 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 [2021-12-06 21:51:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:51:01,243 INFO L225 Difference]: With dead ends: 34887 [2021-12-06 21:51:01,243 INFO L226 Difference]: Without dead ends: 21245 [2021-12-06 21:51:01,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:51:01,255 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 195 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:51:01,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 380 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:51:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21245 states. [2021-12-06 21:51:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21245 to 21019. [2021-12-06 21:51:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21019 states, 21018 states have (on average 1.310448187268056) internal successors, (27543), 21018 states have internal predecessors, (27543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21019 states to 21019 states and 27543 transitions. [2021-12-06 21:51:05,196 INFO L78 Accepts]: Start accepts. Automaton has 21019 states and 27543 transitions. Word has length 73 [2021-12-06 21:51:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:51:05,196 INFO L470 AbstractCegarLoop]: Abstraction has 21019 states and 27543 transitions. [2021-12-06 21:51:05,196 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) [2021-12-06 21:51:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 21019 states and 27543 transitions. [2021-12-06 21:51:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 21:51:05,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:51:05,198 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] [2021-12-06 21:51:05,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 21:51:05,198 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)] === [2021-12-06 21:51:05,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:51:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2021-12-06 21:51:05,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:51:05,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819125506] [2021-12-06 21:51:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:51:05,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:51:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:51:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:51:05,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:51:05,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819125506] [2021-12-06 21:51:05,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819125506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:51:05,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:51:05,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:51:05,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275506260] [2021-12-06 21:51:05,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:51:05,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:51:05,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:51:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:51:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:51:05,241 INFO L87 Difference]: Start difference. First operand 21019 states and 27543 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) [2021-12-06 21:51:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:51:10,030 INFO L93 Difference]: Finished difference Result 31051 states and 40923 transitions. [2021-12-06 21:51:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:51:10,030 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 [2021-12-06 21:51:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:51:10,071 INFO L225 Difference]: With dead ends: 31051 [2021-12-06 21:51:10,071 INFO L226 Difference]: Without dead ends: 26381 [2021-12-06 21:51:10,079 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 [2021-12-06 21:51:10,080 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 644 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:51:10,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 812 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:51:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26381 states. [2021-12-06 21:51:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26381 to 24035. [2021-12-06 21:51:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24035 states, 24034 states have (on average 1.307605891653491) internal successors, (31427), 24034 states have internal predecessors, (31427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24035 states to 24035 states and 31427 transitions. [2021-12-06 21:51:14,721 INFO L78 Accepts]: Start accepts. Automaton has 24035 states and 31427 transitions. Word has length 74 [2021-12-06 21:51:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:51:14,722 INFO L470 AbstractCegarLoop]: Abstraction has 24035 states and 31427 transitions. [2021-12-06 21:51:14,722 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) [2021-12-06 21:51:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 24035 states and 31427 transitions. [2021-12-06 21:51:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 21:51:14,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:51:14,728 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] [2021-12-06 21:51:14,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 21:51:14,729 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)] === [2021-12-06 21:51:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:51:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1899335398, now seen corresponding path program 1 times [2021-12-06 21:51:14,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:51:14,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680456495] [2021-12-06 21:51:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:51:14,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:51:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:51:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 21:51:14,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:51:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680456495] [2021-12-06 21:51:14,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680456495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:51:14,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:51:14,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:51:14,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872265767] [2021-12-06 21:51:14,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:51:14,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:51:14,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:51:14,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:51:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:51:14,793 INFO L87 Difference]: Start difference. First operand 24035 states and 31427 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:51:27,257 INFO L93 Difference]: Finished difference Result 79307 states and 103360 transitions. [2021-12-06 21:51:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 21:51:27,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2021-12-06 21:51:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:51:27,341 INFO L225 Difference]: With dead ends: 79307 [2021-12-06 21:51:27,341 INFO L226 Difference]: Without dead ends: 63581 [2021-12-06 21:51:27,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-06 21:51:27,363 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1448 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:51:27,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 1308 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:51:27,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63581 states. [2021-12-06 21:51:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63581 to 23919. [2021-12-06 21:51:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23919 states, 23918 states have (on average 1.3079270842043649) internal successors, (31283), 23918 states have internal predecessors, (31283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23919 states to 23919 states and 31283 transitions. [2021-12-06 21:51:32,503 INFO L78 Accepts]: Start accepts. Automaton has 23919 states and 31283 transitions. Word has length 92 [2021-12-06 21:51:32,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:51:32,503 INFO L470 AbstractCegarLoop]: Abstraction has 23919 states and 31283 transitions. [2021-12-06 21:51:32,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 23919 states and 31283 transitions. [2021-12-06 21:51:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 21:51:32,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:51:32,510 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] [2021-12-06 21:51:32,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 21:51:32,510 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)] === [2021-12-06 21:51:32,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:51:32,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1332578409, now seen corresponding path program 1 times [2021-12-06 21:51:32,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:51:32,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342745548] [2021-12-06 21:51:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:51:32,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:51:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:51:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 21:51:32,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:51:32,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342745548] [2021-12-06 21:51:32,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342745548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:51:32,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:51:32,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:51:32,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437351937] [2021-12-06 21:51:32,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:51:32,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:51:32,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:51:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:51:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:51:32,577 INFO L87 Difference]: Start difference. First operand 23919 states and 31283 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:51:42,689 INFO L93 Difference]: Finished difference Result 58869 states and 76729 transitions. [2021-12-06 21:51:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:51:42,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2021-12-06 21:51:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:51:42,746 INFO L225 Difference]: With dead ends: 58869 [2021-12-06 21:51:42,746 INFO L226 Difference]: Without dead ends: 48539 [2021-12-06 21:51:42,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-06 21:51:42,762 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1744 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:51:42,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 948 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:51:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48539 states. [2021-12-06 21:51:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48539 to 23873. [2021-12-06 21:51:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23873 states, 23872 states have (on average 1.3079758713136729) internal successors, (31224), 23872 states have internal predecessors, (31224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23873 states to 23873 states and 31224 transitions. [2021-12-06 21:51:47,807 INFO L78 Accepts]: Start accepts. Automaton has 23873 states and 31224 transitions. Word has length 92 [2021-12-06 21:51:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:51:47,807 INFO L470 AbstractCegarLoop]: Abstraction has 23873 states and 31224 transitions. [2021-12-06 21:51:47,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:51:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23873 states and 31224 transitions. [2021-12-06 21:51:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 21:51:47,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:51:47,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:51:47,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 21:51:47,814 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:51:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:51:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1785022088, now seen corresponding path program 1 times [2021-12-06 21:51:47,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:51:47,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237257664] [2021-12-06 21:51:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:51:47,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:51:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:51:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:51:47,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:51:47,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237257664] [2021-12-06 21:51:47,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237257664] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:51:47,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135650768] [2021-12-06 21:51:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:51:47,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:51:47,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:51:47,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:51:47,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:51:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:51:48,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 21:51:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:51:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:51:49,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:51:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:51:49,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135650768] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:51:49,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:51:49,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2021-12-06 21:51:49,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306635901] [2021-12-06 21:51:49,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:51:49,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 21:51:49,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:51:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 21:51:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-12-06 21:51:49,954 INFO L87 Difference]: Start difference. First operand 23873 states and 31224 transitions. Second operand has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:12,349 INFO L93 Difference]: Finished difference Result 252447 states and 322961 transitions. [2021-12-06 21:53:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2021-12-06 21:53:12,350 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 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 93 [2021-12-06 21:53:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:12,761 INFO L225 Difference]: With dead ends: 252447 [2021-12-06 21:53:12,761 INFO L226 Difference]: Without dead ends: 243829 [2021-12-06 21:53:12,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36857 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=12438, Invalid=76664, Unknown=0, NotChecked=0, Total=89102 [2021-12-06 21:53:12,833 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 8634 mSDsluCounter, 8872 mSDsCounter, 0 mSdLazyCounter, 9055 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8634 SdHoareTripleChecker+Valid, 9320 SdHoareTripleChecker+Invalid, 9515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 9055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:12,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8634 Valid, 9320 Invalid, 9515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 9055 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-12-06 21:53:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243829 states. [2021-12-06 21:53:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243829 to 24141. [2021-12-06 21:53:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24141 states, 24140 states have (on average 1.307456503728252) internal successors, (31562), 24140 states have internal predecessors, (31562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24141 states to 24141 states and 31562 transitions. [2021-12-06 21:53:20,573 INFO L78 Accepts]: Start accepts. Automaton has 24141 states and 31562 transitions. Word has length 93 [2021-12-06 21:53:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:20,573 INFO L470 AbstractCegarLoop]: Abstraction has 24141 states and 31562 transitions. [2021-12-06 21:53:20,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 24141 states and 31562 transitions. [2021-12-06 21:53:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 21:53:20,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:20,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:20,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:53:20,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:20,782 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:53:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash 85404025, now seen corresponding path program 1 times [2021-12-06 21:53:20,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:20,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900677262] [2021-12-06 21:53:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:20,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:20,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:20,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900677262] [2021-12-06 21:53:20,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900677262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:20,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:20,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:53:20,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002359073] [2021-12-06 21:53:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:20,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:53:20,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:53:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:53:20,900 INFO L87 Difference]: Start difference. First operand 24141 states and 31562 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:39,828 INFO L93 Difference]: Finished difference Result 76165 states and 98566 transitions. [2021-12-06 21:53:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 21:53:39,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-06 21:53:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:39,912 INFO L225 Difference]: With dead ends: 76165 [2021-12-06 21:53:39,912 INFO L226 Difference]: Without dead ends: 64243 [2021-12-06 21:53:39,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-12-06 21:53:39,929 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1974 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:39,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 1278 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:53:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64243 states. [2021-12-06 21:53:50,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64243 to 37742. [2021-12-06 21:53:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37742 states, 37741 states have (on average 1.3055297951829574) internal successors, (49272), 37741 states have internal predecessors, (49272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37742 states to 37742 states and 49272 transitions. [2021-12-06 21:53:50,265 INFO L78 Accepts]: Start accepts. Automaton has 37742 states and 49272 transitions. Word has length 93 [2021-12-06 21:53:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:50,266 INFO L470 AbstractCegarLoop]: Abstraction has 37742 states and 49272 transitions. [2021-12-06 21:53:50,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand 37742 states and 49272 transitions. [2021-12-06 21:53:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 21:53:50,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:50,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:50,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 21:53:50,276 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:53:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash 256518171, now seen corresponding path program 1 times [2021-12-06 21:53:50,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:50,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455638367] [2021-12-06 21:53:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:50,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:50,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:50,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455638367] [2021-12-06 21:53:50,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455638367] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:53:50,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735351431] [2021-12-06 21:53:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:50,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:50,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:50,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:50,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:53:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:50,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 21:53:50,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:51,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:53:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:52,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735351431] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:53:52,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:53:52,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2021-12-06 21:53:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196048687] [2021-12-06 21:53:52,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:53:52,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 21:53:52,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 21:53:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-12-06 21:53:52,632 INFO L87 Difference]: Start difference. First operand 37742 states and 49272 transitions. Second operand has 30 states, 30 states have (on average 8.266666666666667) internal successors, (248), 29 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:55:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:55:42,834 INFO L93 Difference]: Finished difference Result 309900 states and 395814 transitions. [2021-12-06 21:55:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2021-12-06 21:55:42,835 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.266666666666667) internal successors, (248), 29 states have internal predecessors, (248), 0 states have call successors, (0), 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 93 [2021-12-06 21:55:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:55:43,352 INFO L225 Difference]: With dead ends: 309900 [2021-12-06 21:55:43,352 INFO L226 Difference]: Without dead ends: 294506 [2021-12-06 21:55:43,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37657 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=13485, Invalid=73835, Unknown=0, NotChecked=0, Total=87320 [2021-12-06 21:55:43,428 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 6791 mSDsluCounter, 9137 mSDsCounter, 0 mSdLazyCounter, 8375 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6791 SdHoareTripleChecker+Valid, 9694 SdHoareTripleChecker+Invalid, 8804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 8375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:55:43,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6791 Valid, 9694 Invalid, 8804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 8375 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 21:55:43,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294506 states. [2021-12-06 21:56:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294506 to 67617. [2021-12-06 21:56:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67617 states, 67616 states have (on average 1.3039221486038808) internal successors, (88166), 67616 states have internal predecessors, (88166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:56:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67617 states to 67617 states and 88166 transitions. [2021-12-06 21:56:05,504 INFO L78 Accepts]: Start accepts. Automaton has 67617 states and 88166 transitions. Word has length 93 [2021-12-06 21:56:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:56:05,505 INFO L470 AbstractCegarLoop]: Abstraction has 67617 states and 88166 transitions. [2021-12-06 21:56:05,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.266666666666667) internal successors, (248), 29 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:56:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 67617 states and 88166 transitions. [2021-12-06 21:56:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 21:56:05,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:56:05,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:56:05,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 21:56:05,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:56:05,719 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:56:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:56:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1283755961, now seen corresponding path program 1 times [2021-12-06 21:56:05,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:56:05,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429625016] [2021-12-06 21:56:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:56:05,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:56:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 21:56:05,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:56:05,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429625016] [2021-12-06 21:56:05,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429625016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:56:05,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:56:05,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:56:05,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838389611] [2021-12-06 21:56:05,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:56:05,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:56:05,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:56:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:56:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:56:05,752 INFO L87 Difference]: Start difference. First operand 67617 states and 88166 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:56:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:56:25,764 INFO L93 Difference]: Finished difference Result 133747 states and 174619 transitions. [2021-12-06 21:56:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:56:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-06 21:56:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:56:25,858 INFO L225 Difference]: With dead ends: 133747 [2021-12-06 21:56:25,858 INFO L226 Difference]: Without dead ends: 67209 [2021-12-06 21:56:25,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:56:25,891 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 195 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:56:25,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 260 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:56:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67209 states. [2021-12-06 21:56:45,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67209 to 67209. [2021-12-06 21:56:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67209 states, 67208 states have (on average 1.2897125342221165) internal successors, (86679), 67208 states have internal predecessors, (86679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:56:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67209 states to 67209 states and 86679 transitions. [2021-12-06 21:56:46,108 INFO L78 Accepts]: Start accepts. Automaton has 67209 states and 86679 transitions. Word has length 94 [2021-12-06 21:56:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:56:46,108 INFO L470 AbstractCegarLoop]: Abstraction has 67209 states and 86679 transitions. [2021-12-06 21:56:46,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:56:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 67209 states and 86679 transitions. [2021-12-06 21:56:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 21:56:46,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:56:46,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:56:46,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 21:56:46,117 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:56:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:56:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1271165246, now seen corresponding path program 1 times [2021-12-06 21:56:46,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:56:46,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889271228] [2021-12-06 21:56:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:56:46,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:56:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:56:46,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:56:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889271228] [2021-12-06 21:56:46,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889271228] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:56:46,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771000446] [2021-12-06 21:56:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:56:46,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:56:46,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:56:46,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:56:46,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:56:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:46,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:56:46,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:56:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:56:46,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:56:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:56:46,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771000446] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:56:46,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:56:46,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-06 21:56:46,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103952948] [2021-12-06 21:56:46,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:56:46,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:56:46,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:56:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:56:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:56:46,618 INFO L87 Difference]: Start difference. First operand 67209 states and 86679 transitions. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:57:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:57:27,713 INFO L93 Difference]: Finished difference Result 201003 states and 257856 transitions. [2021-12-06 21:57:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:57:27,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 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 [2021-12-06 21:57:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:57:27,915 INFO L225 Difference]: With dead ends: 201003 [2021-12-06 21:57:27,915 INFO L226 Difference]: Without dead ends: 135013 [2021-12-06 21:57:27,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:57:27,961 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 424 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:57:27,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1393 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:57:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135013 states. [2021-12-06 21:57:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135013 to 102320. [2021-12-06 21:57:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102320 states, 102319 states have (on average 1.2841212287063009) internal successors, (131390), 102319 states have internal predecessors, (131390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:57:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102320 states to 102320 states and 131390 transitions. [2021-12-06 21:57:59,890 INFO L78 Accepts]: Start accepts. Automaton has 102320 states and 131390 transitions. Word has length 94 [2021-12-06 21:57:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:57:59,890 INFO L470 AbstractCegarLoop]: Abstraction has 102320 states and 131390 transitions. [2021-12-06 21:57:59,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:57:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 102320 states and 131390 transitions. [2021-12-06 21:57:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 21:57:59,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:57:59,900 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] [2021-12-06 21:57:59,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 21:58:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-06 21:58:00,101 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:58:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1015641429, now seen corresponding path program 1 times [2021-12-06 21:58:00,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:00,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25049791] [2021-12-06 21:58:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:00,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:58:00,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:00,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25049791] [2021-12-06 21:58:00,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25049791] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:00,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804479786] [2021-12-06 21:58:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:00,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:00,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:00,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:00,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:58:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:00,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:58:00,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:58:00,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:58:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:58:00,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804479786] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:58:00,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:58:00,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2021-12-06 21:58:00,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561219747] [2021-12-06 21:58:00,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:58:00,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:58:00,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:00,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:58:00,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:58:00,547 INFO L87 Difference]: Start difference. First operand 102320 states and 131390 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) [2021-12-06 21:58:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:54,998 INFO L93 Difference]: Finished difference Result 238311 states and 303340 transitions. [2021-12-06 21:58:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:58:54,999 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 [2021-12-06 21:58:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:55,243 INFO L225 Difference]: With dead ends: 238311 [2021-12-06 21:58:55,243 INFO L226 Difference]: Without dead ends: 161663 [2021-12-06 21:58:55,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-12-06 21:58:55,301 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 2820 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:55,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 965 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:58:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161663 states. [2021-12-06 21:59:30,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161663 to 108555. [2021-12-06 21:59:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108555 states, 108554 states have (on average 1.2773550490999872) internal successors, (138662), 108554 states have internal predecessors, (138662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:59:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108555 states to 108555 states and 138662 transitions. [2021-12-06 21:59:30,838 INFO L78 Accepts]: Start accepts. Automaton has 108555 states and 138662 transitions. Word has length 94 [2021-12-06 21:59:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:30,838 INFO L470 AbstractCegarLoop]: Abstraction has 108555 states and 138662 transitions. [2021-12-06 21:59:30,838 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) [2021-12-06 21:59:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 108555 states and 138662 transitions. [2021-12-06 21:59:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 21:59:30,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:30,847 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] [2021-12-06 21:59:30,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:59:31,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55617d3d-e133-47f6-a466-f1fd290b3650/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 21:59:31,048 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 21:59:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1318361125, now seen corresponding path program 1 times [2021-12-06 21:59:31,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716988071] [2021-12-06 21:59:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:31,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:31,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:31,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716988071] [2021-12-06 21:59:31,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716988071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:31,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:31,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:59:31,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220962714] [2021-12-06 21:59:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:31,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:59:31,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:59:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:59:31,120 INFO L87 Difference]: Start difference. First operand 108555 states and 138662 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) [2021-12-06 22:00:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:10,972 INFO L93 Difference]: Finished difference Result 227944 states and 290669 transitions. [2021-12-06 22:00:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:00:10,973 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 [2021-12-06 22:00:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:11,162 INFO L225 Difference]: With dead ends: 227944 [2021-12-06 22:00:11,162 INFO L226 Difference]: Without dead ends: 120360 [2021-12-06 22:00:11,236 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 [2021-12-06 22:00:11,236 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 632 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:11,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 503 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:00:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120360 states. [2021-12-06 22:00:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120360 to 100357. [2021-12-06 22:00:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100357 states, 100356 states have (on average 1.2561680417712942) internal successors, (126064), 100356 states have internal predecessors, (126064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:00:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100357 states to 100357 states and 126064 transitions. [2021-12-06 22:00:43,168 INFO L78 Accepts]: Start accepts. Automaton has 100357 states and 126064 transitions. Word has length 95 [2021-12-06 22:00:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:43,169 INFO L470 AbstractCegarLoop]: Abstraction has 100357 states and 126064 transitions. [2021-12-06 22:00:43,169 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-06 22:00:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 100357 states and 126064 transitions. [2021-12-06 22:00:43,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 22:00:43,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:43,184 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, 1, 1, 1, 1] [2021-12-06 22:00:43,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 22:00:43,184 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 22:00:43,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1901193134, now seen corresponding path program 1 times [2021-12-06 22:00:43,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:43,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700974356] [2021-12-06 22:00:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:43,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:00:43,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:43,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700974356] [2021-12-06 22:00:43,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700974356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:43,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:43,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:00:43,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910642677] [2021-12-06 22:00:43,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:43,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:00:43,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:00:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:00:43,215 INFO L87 Difference]: Start difference. First operand 100357 states and 126064 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:01:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:01:18,051 INFO L93 Difference]: Finished difference Result 145320 states and 182327 transitions. [2021-12-06 22:01:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:01:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-12-06 22:01:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:01:18,206 INFO L225 Difference]: With dead ends: 145320 [2021-12-06 22:01:18,206 INFO L226 Difference]: Without dead ends: 108809 [2021-12-06 22:01:18,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:01:18,241 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 108 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:01:18,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 576 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:01:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108809 states. [2021-12-06 22:01:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108809 to 99430. [2021-12-06 22:01:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99430 states, 99429 states have (on average 1.2488207665771556) internal successors, (124169), 99429 states have internal predecessors, (124169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:01:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99430 states to 99430 states and 124169 transitions. [2021-12-06 22:01:49,916 INFO L78 Accepts]: Start accepts. Automaton has 99430 states and 124169 transitions. Word has length 98 [2021-12-06 22:01:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:01:49,917 INFO L470 AbstractCegarLoop]: Abstraction has 99430 states and 124169 transitions. [2021-12-06 22:01:49,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:01:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 99430 states and 124169 transitions. [2021-12-06 22:01:49,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 22:01:49,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:01:49,933 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, 1, 1, 1, 1] [2021-12-06 22:01:49,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 22:01:49,933 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 22:01:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:01:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1373598289, now seen corresponding path program 1 times [2021-12-06 22:01:49,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:01:49,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485348487] [2021-12-06 22:01:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:49,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:01:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:01:49,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:01:49,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485348487] [2021-12-06 22:01:49,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485348487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:01:49,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:01:49,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:01:49,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213413438] [2021-12-06 22:01:49,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:01:49,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:01:49,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:01:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:01:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:01:49,977 INFO L87 Difference]: Start difference. First operand 99430 states and 124169 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:27,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:02:27,773 INFO L93 Difference]: Finished difference Result 135592 states and 170549 transitions. [2021-12-06 22:02:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:02:27,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-06 22:02:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:02:27,940 INFO L225 Difference]: With dead ends: 135592 [2021-12-06 22:02:27,941 INFO L226 Difference]: Without dead ends: 118616 [2021-12-06 22:02:27,968 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 [2021-12-06 22:02:27,968 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 584 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:02:27,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 759 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:02:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118616 states. [2021-12-06 22:03:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118616 to 113774. [2021-12-06 22:03:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113774 states, 113773 states have (on average 1.2478443919031756) internal successors, (141971), 113773 states have internal predecessors, (141971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:03:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113774 states to 113774 states and 141971 transitions. [2021-12-06 22:03:04,648 INFO L78 Accepts]: Start accepts. Automaton has 113774 states and 141971 transitions. Word has length 99 [2021-12-06 22:03:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:04,649 INFO L470 AbstractCegarLoop]: Abstraction has 113774 states and 141971 transitions. [2021-12-06 22:03:04,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:03:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 113774 states and 141971 transitions. [2021-12-06 22:03:04,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 22:03:04,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:04,661 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, 1, 1, 1, 1, 1] [2021-12-06 22:03:04,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 22:03:04,662 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 22:03:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1351400419, now seen corresponding path program 1 times [2021-12-06 22:03:04,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:04,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787928334] [2021-12-06 22:03:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:04,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:03:04,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:04,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787928334] [2021-12-06 22:03:04,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787928334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:04,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:04,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:03:04,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023298596] [2021-12-06 22:03:04,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:04,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:03:04,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:04,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:03:04,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:03:04,701 INFO L87 Difference]: Start difference. First operand 113774 states and 141971 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)