./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8 --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 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:28:02,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:28:02,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:28:02,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:28:02,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:28:02,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:28:02,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:28:02,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:28:02,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:28:02,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:28:02,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:28:02,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:28:02,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:28:02,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:28:02,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:28:02,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:28:02,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:28:02,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:28:02,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:28:02,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:28:02,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:28:02,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:28:02,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:28:02,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:28:02,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:28:02,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:28:02,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:28:02,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:28:02,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:28:02,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:28:02,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:28:02,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:28:02,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:28:02,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:28:02,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:28:02,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:28:02,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:28:02,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:28:02,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:28:02,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:28:02,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:28:02,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:28:02,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:28:02,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:28:02,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:28:02,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:28:02,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:28:02,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:28:02,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:28:02,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:28:02,942 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:28:02,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:28:02,943 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:28:02,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:28:02,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:28:02,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:28:02,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:28:02,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:28:02,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:28:02,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:28:02,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:28:02,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:28:02,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:28:02,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:28:02,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:28:02,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:28:02,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:02,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:28:02,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:28:02,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:28:02,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:28:02,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:28:02,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:28:02,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:28:02,946 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:28:02,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:28:02,946 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:28:02,947 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c [2022-12-13 12:28:03,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:28:03,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:28:03,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:28:03,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:28:03,156 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:28:03,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-12-13 12:28:05,735 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:28:06,072 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:28:06,072 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-12-13 12:28:06,091 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/data/8c48fa8e4/0bed5ade334e4f9a82f3aade1cda987f/FLAG91d4cd93b [2022-12-13 12:28:06,102 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/data/8c48fa8e4/0bed5ade334e4f9a82f3aade1cda987f [2022-12-13 12:28:06,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:28:06,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:28:06,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:06,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:28:06,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:28:06,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:06" (1/1) ... [2022-12-13 12:28:06,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c126b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:06, skipping insertion in model container [2022-12-13 12:28:06,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:06" (1/1) ... [2022-12-13 12:28:06,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:28:06,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:28:06,427 WARN L237 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_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2022-12-13 12:28:06,473 WARN L237 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_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2022-12-13 12:28:07,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:07,070 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:28:07,094 WARN L237 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_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2022-12-13 12:28:07,108 WARN L237 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_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2022-12-13 12:28:07,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:07,542 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:28:07,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07 WrapperNode [2022-12-13 12:28:07,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:07,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:07,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:28:07,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:28:07,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,768 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4965 [2022-12-13 12:28:07,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:07,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:28:07,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:28:07,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:28:07,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:07,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:08,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:28:08,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:28:08,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:28:08,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:28:08,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (1/1) ... [2022-12-13 12:28:08,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:28:08,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:28:08,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:28:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:28:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:28:08,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:28:08,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:28:08,158 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:28:08,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:28:11,736 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:28:11,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:28:11,747 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:28:11,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:11 BoogieIcfgContainer [2022-12-13 12:28:11,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:28:11,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:28:11,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:28:11,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:28:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:28:06" (1/3) ... [2022-12-13 12:28:11,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4997f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:11, skipping insertion in model container [2022-12-13 12:28:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:07" (2/3) ... [2022-12-13 12:28:11,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4997f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:11, skipping insertion in model container [2022-12-13 12:28:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:11" (3/3) ... [2022-12-13 12:28:11,756 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-12-13 12:28:11,769 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:28:11,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 12:28:11,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:28:11,823 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d33a935, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:28:11,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 12:28:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 12:28:11,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:11,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:11,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:11,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2022-12-13 12:28:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:11,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964708843] [2022-12-13 12:28:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:11,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:11,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964708843] [2022-12-13 12:28:11,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964708843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:11,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:11,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420662639] [2022-12-13 12:28:11,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:11,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:28:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:28:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:28:11,999 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:12,055 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2022-12-13 12:28:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:28:12,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-12-13 12:28:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:12,069 INFO L225 Difference]: With dead ends: 1724 [2022-12-13 12:28:12,069 INFO L226 Difference]: Without dead ends: 808 [2022-12-13 12:28:12,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:28:12,075 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:12,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-12-13 12:28:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-12-13 12:28:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2022-12-13 12:28:12,128 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2022-12-13 12:28:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:12,128 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2022-12-13 12:28:12,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,129 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2022-12-13 12:28:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 12:28:12,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:12,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:12,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:28:12,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2022-12-13 12:28:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:12,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645500570] [2022-12-13 12:28:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:12,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645500570] [2022-12-13 12:28:12,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645500570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:12,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:12,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:28:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132704868] [2022-12-13 12:28:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:12,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:28:12,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:28:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:28:12,273 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:12,358 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2022-12-13 12:28:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:28:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-12-13 12:28:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:12,363 INFO L225 Difference]: With dead ends: 844 [2022-12-13 12:28:12,363 INFO L226 Difference]: Without dead ends: 808 [2022-12-13 12:28:12,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:28:12,365 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 3 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:12,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6081 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-12-13 12:28:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-12-13 12:28:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2022-12-13 12:28:12,394 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2022-12-13 12:28:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:12,394 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2022-12-13 12:28:12,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2022-12-13 12:28:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 12:28:12,395 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:12,396 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:28:12,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2022-12-13 12:28:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:12,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746009525] [2022-12-13 12:28:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:12,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:12,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746009525] [2022-12-13 12:28:12,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746009525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:12,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:12,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:28:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112701840] [2022-12-13 12:28:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:12,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:28:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:28:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:28:12,538 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:12,644 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2022-12-13 12:28:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:28:12,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-12-13 12:28:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:12,648 INFO L225 Difference]: With dead ends: 1000 [2022-12-13 12:28:12,649 INFO L226 Difference]: Without dead ends: 968 [2022-12-13 12:28:12,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:28:12,650 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:12,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-12-13 12:28:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2022-12-13 12:28:12,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2022-12-13 12:28:12,671 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2022-12-13 12:28:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:12,671 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2022-12-13 12:28:12,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2022-12-13 12:28:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 12:28:12,672 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:12,672 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:28:12,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2022-12-13 12:28:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:12,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589766845] [2022-12-13 12:28:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:12,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:12,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589766845] [2022-12-13 12:28:12,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589766845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:12,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:12,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:28:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043723598] [2022-12-13 12:28:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:12,740 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:12,776 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2022-12-13 12:28:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:12,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-12-13 12:28:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:12,778 INFO L225 Difference]: With dead ends: 951 [2022-12-13 12:28:12,778 INFO L226 Difference]: Without dead ends: 889 [2022-12-13 12:28:12,779 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:12,779 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-12-13 12:28:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2022-12-13 12:28:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2022-12-13 12:28:12,795 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2022-12-13 12:28:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:12,796 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2022-12-13 12:28:12,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2022-12-13 12:28:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 12:28:12,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:12,797 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:12,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:28:12,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:12,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:12,797 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2022-12-13 12:28:12,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:12,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928184716] [2022-12-13 12:28:12,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:12,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:12,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928184716] [2022-12-13 12:28:12,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928184716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:12,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:12,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:28:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075365249] [2022-12-13 12:28:12,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:12,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:28:12,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:12,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:28:12,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:28:12,924 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:12,991 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2022-12-13 12:28:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:28:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-12-13 12:28:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:12,994 INFO L225 Difference]: With dead ends: 996 [2022-12-13 12:28:12,994 INFO L226 Difference]: Without dead ends: 887 [2022-12-13 12:28:12,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:28:12,995 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:12,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:12,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-12-13 12:28:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2022-12-13 12:28:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2022-12-13 12:28:13,011 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2022-12-13 12:28:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:13,011 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2022-12-13 12:28:13,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2022-12-13 12:28:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 12:28:13,012 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:13,012 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:28:13,012 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2022-12-13 12:28:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:13,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996879406] [2022-12-13 12:28:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:13,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996879406] [2022-12-13 12:28:13,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996879406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:13,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:13,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:28:13,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949707800] [2022-12-13 12:28:13,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:13,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:28:13,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:13,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:28:13,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:28:13,160 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:13,318 INFO L93 Difference]: Finished difference Result 990 states and 1780 transitions. [2022-12-13 12:28:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:28:13,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-12-13 12:28:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:13,321 INFO L225 Difference]: With dead ends: 990 [2022-12-13 12:28:13,322 INFO L226 Difference]: Without dead ends: 988 [2022-12-13 12:28:13,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:28:13,322 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 295 mSDsluCounter, 8894 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 10442 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:13,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 10442 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:13,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-12-13 12:28:13,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 891. [2022-12-13 12:28:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2022-12-13 12:28:13,343 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2022-12-13 12:28:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:13,343 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2022-12-13 12:28:13,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2022-12-13 12:28:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 12:28:13,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:13,344 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:28:13,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:13,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2022-12-13 12:28:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:13,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239084678] [2022-12-13 12:28:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:13,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239084678] [2022-12-13 12:28:13,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239084678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:13,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:13,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:28:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726434488] [2022-12-13 12:28:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:13,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:13,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:13,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:13,375 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:13,411 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2022-12-13 12:28:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-12-13 12:28:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:13,413 INFO L225 Difference]: With dead ends: 1105 [2022-12-13 12:28:13,414 INFO L226 Difference]: Without dead ends: 990 [2022-12-13 12:28:13,414 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:13,415 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:13,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:13,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-12-13 12:28:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2022-12-13 12:28:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2022-12-13 12:28:13,439 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2022-12-13 12:28:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:13,439 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2022-12-13 12:28:13,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2022-12-13 12:28:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 12:28:13,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:13,440 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:13,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:28:13,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2022-12-13 12:28:13,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:13,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460518073] [2022-12-13 12:28:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:13,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:13,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460518073] [2022-12-13 12:28:13,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460518073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:13,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:13,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:28:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64355983] [2022-12-13 12:28:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:13,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:13,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:13,469 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:13,515 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2022-12-13 12:28:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-12-13 12:28:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:13,519 INFO L225 Difference]: With dead ends: 1380 [2022-12-13 12:28:13,519 INFO L226 Difference]: Without dead ends: 1168 [2022-12-13 12:28:13,519 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:13,520 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:13,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-12-13 12:28:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2022-12-13 12:28:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2022-12-13 12:28:13,557 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2022-12-13 12:28:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:13,557 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2022-12-13 12:28:13,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2022-12-13 12:28:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 12:28:13,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:13,557 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:13,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:28:13,558 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2022-12-13 12:28:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:13,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418857107] [2022-12-13 12:28:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:13,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:13,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418857107] [2022-12-13 12:28:13,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418857107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:13,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:13,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:28:13,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677617174] [2022-12-13 12:28:13,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:13,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:13,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:13,587 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:13,647 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2022-12-13 12:28:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-12-13 12:28:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:13,650 INFO L225 Difference]: With dead ends: 1589 [2022-12-13 12:28:13,651 INFO L226 Difference]: Without dead ends: 1354 [2022-12-13 12:28:13,651 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:13,652 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:13,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-12-13 12:28:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2022-12-13 12:28:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2022-12-13 12:28:13,713 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2022-12-13 12:28:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:13,713 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2022-12-13 12:28:13,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2022-12-13 12:28:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 12:28:13,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:13,714 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:28:13,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:28:13,714 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:13,714 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2022-12-13 12:28:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:13,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462122550] [2022-12-13 12:28:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:28:13,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:13,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462122550] [2022-12-13 12:28:13,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462122550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:13,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:13,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:28:13,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362222167] [2022-12-13 12:28:13,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:13,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:28:13,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:28:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:28:13,785 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:13,993 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2022-12-13 12:28:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:28:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 [2022-12-13 12:28:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:14,005 INFO L225 Difference]: With dead ends: 3208 [2022-12-13 12:28:14,006 INFO L226 Difference]: Without dead ends: 2634 [2022-12-13 12:28:14,007 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:14,007 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:14,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-12-13 12:28:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2022-12-13 12:28:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2022-12-13 12:28:14,132 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2022-12-13 12:28:14,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:14,132 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2022-12-13 12:28:14,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2022-12-13 12:28:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 12:28:14,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:14,133 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:28:14,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:28:14,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2022-12-13 12:28:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:14,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993240562] [2022-12-13 12:28:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:14,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:28:14,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:14,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993240562] [2022-12-13 12:28:14,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993240562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:14,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:14,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:28:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822505494] [2022-12-13 12:28:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:14,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:28:14,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:14,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:28:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:28:14,221 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2022-12-13 12:28:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:14,559 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2022-12-13 12:28:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:28:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 54 [2022-12-13 12:28:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:14,567 INFO L225 Difference]: With dead ends: 3780 [2022-12-13 12:28:14,567 INFO L226 Difference]: Without dead ends: 3206 [2022-12-13 12:28:14,568 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:14,569 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 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 [2022-12-13 12:28:14,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2022-12-13 12:28:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2022-12-13 12:28:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2022-12-13 12:28:14,753 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2022-12-13 12:28:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:14,753 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2022-12-13 12:28:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2022-12-13 12:28:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2022-12-13 12:28:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 12:28:14,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:14,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:28:14,754 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2022-12-13 12:28:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:14,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974854844] [2022-12-13 12:28:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:14,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:14,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974854844] [2022-12-13 12:28:14,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974854844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:14,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:14,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:28:14,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253316696] [2022-12-13 12:28:14,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:14,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:14,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:14,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:14,809 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 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) [2022-12-13 12:28:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:14,932 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2022-12-13 12:28:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:14,932 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 [2022-12-13 12:28:14,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:14,937 INFO L225 Difference]: With dead ends: 4260 [2022-12-13 12:28:14,937 INFO L226 Difference]: Without dead ends: 2254 [2022-12-13 12:28:14,939 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:14,939 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:14,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-12-13 12:28:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2022-12-13 12:28:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2022-12-13 12:28:15,061 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2022-12-13 12:28:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:15,061 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2022-12-13 12:28:15,062 INFO L496 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) [2022-12-13 12:28:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2022-12-13 12:28:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 12:28:15,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:15,062 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:28:15,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:28:15,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2022-12-13 12:28:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:15,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184873149] [2022-12-13 12:28:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184873149] [2022-12-13 12:28:15,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184873149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:15,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:15,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:28:15,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711549154] [2022-12-13 12:28:15,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:15,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:28:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:15,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:28:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:28:15,135 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2022-12-13 12:28:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:15,361 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2022-12-13 12:28:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:28:15,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 56 [2022-12-13 12:28:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:15,367 INFO L225 Difference]: With dead ends: 3508 [2022-12-13 12:28:15,367 INFO L226 Difference]: Without dead ends: 3090 [2022-12-13 12:28:15,369 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:15,369 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:15,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:15,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2022-12-13 12:28:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2022-12-13 12:28:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2022-12-13 12:28:15,541 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2022-12-13 12:28:15,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:15,541 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2022-12-13 12:28:15,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2022-12-13 12:28:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2022-12-13 12:28:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 12:28:15,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:15,542 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:15,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:28:15,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2022-12-13 12:28:15,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:15,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791763541] [2022-12-13 12:28:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:15,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:15,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791763541] [2022-12-13 12:28:15,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791763541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:15,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:15,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:28:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397384969] [2022-12-13 12:28:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:15,603 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 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) [2022-12-13 12:28:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:15,698 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2022-12-13 12:28:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:15,698 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 [2022-12-13 12:28:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:15,708 INFO L225 Difference]: With dead ends: 3608 [2022-12-13 12:28:15,708 INFO L226 Difference]: Without dead ends: 1734 [2022-12-13 12:28:15,711 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:15,711 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:15,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-12-13 12:28:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2022-12-13 12:28:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2022-12-13 12:28:15,795 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2022-12-13 12:28:15,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:15,796 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2022-12-13 12:28:15,796 INFO L496 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) [2022-12-13 12:28:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2022-12-13 12:28:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 12:28:15,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:15,796 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:28:15,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:28:15,796 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2022-12-13 12:28:15,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:15,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259158659] [2022-12-13 12:28:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:15,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:15,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:15,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259158659] [2022-12-13 12:28:15,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259158659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:15,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:15,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:28:15,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179488503] [2022-12-13 12:28:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:15,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:15,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:15,847 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:15,931 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2022-12-13 12:28:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:15,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-12-13 12:28:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:15,934 INFO L225 Difference]: With dead ends: 2204 [2022-12-13 12:28:15,934 INFO L226 Difference]: Without dead ends: 1266 [2022-12-13 12:28:15,936 INFO L412 NwaCegarLoop]: 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 [2022-12-13 12:28:15,936 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:15,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:28:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-12-13 12:28:16,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2022-12-13 12:28:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2022-12-13 12:28:16,005 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2022-12-13 12:28:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:16,005 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2022-12-13 12:28:16,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2022-12-13 12:28:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 12:28:16,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:16,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:16,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:28:16,006 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:16,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2022-12-13 12:28:16,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:16,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090607494] [2022-12-13 12:28:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:16,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090607494] [2022-12-13 12:28:17,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090607494] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:28:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203745523] [2022-12-13 12:28:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:17,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:28:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:28:17,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:28:17,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:28:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:17,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:28:17,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:28:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:17,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:28:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:17,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203745523] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:28:17,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:28:17,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-12-13 12:28:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564981368] [2022-12-13 12:28:17,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:28:17,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:28:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:28:17,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:28:17,755 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:22,790 INFO L93 Difference]: Finished difference Result 4092 states and 5782 transitions. [2022-12-13 12:28:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 12:28:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 61 [2022-12-13 12:28:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:22,798 INFO L225 Difference]: With dead ends: 4092 [2022-12-13 12:28:22,798 INFO L226 Difference]: Without dead ends: 3622 [2022-12-13 12:28:22,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=852, Invalid=3704, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 12:28:22,802 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 14210 mSDsluCounter, 6262 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14210 SdHoareTripleChecker+Valid, 7765 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:22,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14210 Valid, 7765 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 12:28:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-12-13 12:28:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 2925. [2022-12-13 12:28:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2923 states have (on average 1.4218268901813205) internal successors, (4156), 2924 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4156 transitions. [2022-12-13 12:28:23,112 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4156 transitions. Word has length 61 [2022-12-13 12:28:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:23,112 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 4156 transitions. [2022-12-13 12:28:23,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4156 transitions. [2022-12-13 12:28:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 12:28:23,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:23,113 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:28:23,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:28:23,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 12:28:23,315 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2022-12-13 12:28:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280082997] [2022-12-13 12:28:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:23,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:23,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280082997] [2022-12-13 12:28:23,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280082997] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:28:23,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821137378] [2022-12-13 12:28:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:23,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:28:23,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:28:23,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:28:23,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:28:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:23,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 12:28:23,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:28:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:24,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:28:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:25,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821137378] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:28:25,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:28:25,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2022-12-13 12:28:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799885258] [2022-12-13 12:28:25,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:28:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 12:28:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 12:28:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2022-12-13 12:28:25,019 INFO L87 Difference]: Start difference. First operand 2925 states and 4156 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:28:28,672 INFO L93 Difference]: Finished difference Result 8464 states and 10991 transitions. [2022-12-13 12:28:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 12:28:28,673 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 62 [2022-12-13 12:28:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:28:28,679 INFO L225 Difference]: With dead ends: 8464 [2022-12-13 12:28:28,679 INFO L226 Difference]: Without dead ends: 6487 [2022-12-13 12:28:28,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 12:28:28,682 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 21843 mSDsluCounter, 7999 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21843 SdHoareTripleChecker+Valid, 9501 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:28:28,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21843 Valid, 9501 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:28:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2022-12-13 12:28:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 4529. [2022-12-13 12:28:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 4527 states have (on average 1.3490170090567706) internal successors, (6107), 4528 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6107 transitions. [2022-12-13 12:28:29,239 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6107 transitions. Word has length 62 [2022-12-13 12:28:29,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:28:29,239 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6107 transitions. [2022-12-13 12:28:29,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6107 transitions. [2022-12-13 12:28:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 12:28:29,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:28:29,240 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:28:29,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:28:29,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 12:28:29,441 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:28:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2022-12-13 12:28:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:29,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142229470] [2022-12-13 12:28:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:29,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:29,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:29,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142229470] [2022-12-13 12:28:29,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142229470] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:28:29,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793097369] [2022-12-13 12:28:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:29,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:28:29,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:28:29,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:28:29,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:28:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:29,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 12:28:29,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:28:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:32,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:28:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:36,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793097369] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:28:36,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:28:36,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 19] total 43 [2022-12-13 12:28:36,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569133642] [2022-12-13 12:28:36,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:28:36,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 12:28:36,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 12:28:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 12:28:36,875 INFO L87 Difference]: Start difference. First operand 4529 states and 6107 transitions. Second operand has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:29:00,252 INFO L93 Difference]: Finished difference Result 10312 states and 13085 transitions. [2022-12-13 12:29:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-12-13 12:29:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 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 62 [2022-12-13 12:29:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:29:00,259 INFO L225 Difference]: With dead ends: 10312 [2022-12-13 12:29:00,259 INFO L226 Difference]: Without dead ends: 6735 [2022-12-13 12:29:00,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9523 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=4613, Invalid=21147, Unknown=0, NotChecked=0, Total=25760 [2022-12-13 12:29:00,265 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 18452 mSDsluCounter, 11477 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18452 SdHoareTripleChecker+Valid, 13042 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:29:00,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18452 Valid, 13042 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 12:29:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2022-12-13 12:29:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 3910. [2022-12-13 12:29:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3910 states, 3908 states have (on average 1.3620777891504605) internal successors, (5323), 3909 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 5323 transitions. [2022-12-13 12:29:00,870 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 5323 transitions. Word has length 62 [2022-12-13 12:29:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:29:00,871 INFO L495 AbstractCegarLoop]: Abstraction has 3910 states and 5323 transitions. [2022-12-13 12:29:00,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 5323 transitions. [2022-12-13 12:29:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 12:29:00,871 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:29:00,871 INFO L195 NwaCegarLoop]: 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] [2022-12-13 12:29:00,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:29:01,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:29:01,072 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:29:01,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash 606047555, now seen corresponding path program 1 times [2022-12-13 12:29:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:01,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418149861] [2022-12-13 12:29:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:01,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418149861] [2022-12-13 12:29:01,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418149861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:01,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:01,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078014788] [2022-12-13 12:29:01,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:01,129 INFO L87 Difference]: Start difference. First operand 3910 states and 5323 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:29:04,818 INFO L93 Difference]: Finished difference Result 5414 states and 8196 transitions. [2022-12-13 12:29:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:04,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-12-13 12:29:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:29:04,822 INFO L225 Difference]: With dead ends: 5414 [2022-12-13 12:29:04,823 INFO L226 Difference]: Without dead ends: 4661 [2022-12-13 12:29:04,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:04,824 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 810 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:29:04,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 547 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 12:29:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2022-12-13 12:29:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4661. [2022-12-13 12:29:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4659 states have (on average 1.3526507834299206) internal successors, (6302), 4660 states have internal predecessors, (6302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 6302 transitions. [2022-12-13 12:29:05,428 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 6302 transitions. Word has length 63 [2022-12-13 12:29:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:29:05,428 INFO L495 AbstractCegarLoop]: Abstraction has 4661 states and 6302 transitions. [2022-12-13 12:29:05,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 6302 transitions. [2022-12-13 12:29:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 12:29:05,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:29:05,429 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 12:29:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:29:05,429 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:29:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash 936502703, now seen corresponding path program 1 times [2022-12-13 12:29:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:05,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110332763] [2022-12-13 12:29:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:06,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110332763] [2022-12-13 12:29:06,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110332763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:29:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106302050] [2022-12-13 12:29:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:06,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:29:06,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:29:06,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:29:06,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:29:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:06,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:29:06,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:07,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:08,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106302050] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:08,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:29:08,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2022-12-13 12:29:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489140309] [2022-12-13 12:29:08,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:08,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 12:29:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 12:29:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 12:29:08,436 INFO L87 Difference]: Start difference. First operand 4661 states and 6302 transitions. Second operand has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:29:18,695 INFO L93 Difference]: Finished difference Result 12030 states and 15438 transitions. [2022-12-13 12:29:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-13 12:29:18,696 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 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 64 [2022-12-13 12:29:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:29:18,706 INFO L225 Difference]: With dead ends: 12030 [2022-12-13 12:29:18,706 INFO L226 Difference]: Without dead ends: 10598 [2022-12-13 12:29:18,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2719 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1903, Invalid=8399, Unknown=0, NotChecked=0, Total=10302 [2022-12-13 12:29:18,710 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 15285 mSDsluCounter, 29296 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15285 SdHoareTripleChecker+Valid, 30822 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:29:18,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15285 Valid, 30822 Invalid, 1810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 12:29:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10598 states. [2022-12-13 12:29:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10598 to 4550. [2022-12-13 12:29:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4548 states have (on average 1.356420404573439) internal successors, (6169), 4549 states have internal predecessors, (6169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 6169 transitions. [2022-12-13 12:29:19,515 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 6169 transitions. Word has length 64 [2022-12-13 12:29:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:29:19,515 INFO L495 AbstractCegarLoop]: Abstraction has 4550 states and 6169 transitions. [2022-12-13 12:29:19,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 6169 transitions. [2022-12-13 12:29:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 12:29:19,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:29:19,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:19,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:29:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:29:19,717 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:29:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash 272942991, now seen corresponding path program 1 times [2022-12-13 12:29:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:19,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379221600] [2022-12-13 12:29:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:19,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:20,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:20,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379221600] [2022-12-13 12:29:20,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379221600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:29:20,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994834301] [2022-12-13 12:29:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:20,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:29:20,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:29:20,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:29:20,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:29:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:20,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 12:29:20,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:22,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:39,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994834301] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:39,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:29:39,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 57 [2022-12-13 12:29:39,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885351325] [2022-12-13 12:29:39,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:39,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-13 12:29:39,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-13 12:29:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 12:29:39,381 INFO L87 Difference]: Start difference. First operand 4550 states and 6169 transitions. Second operand has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:31:22,670 INFO L93 Difference]: Finished difference Result 18623 states and 23589 transitions. [2022-12-13 12:31:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-12-13 12:31:22,671 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 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 103 [2022-12-13 12:31:22,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:31:22,685 INFO L225 Difference]: With dead ends: 18623 [2022-12-13 12:31:22,685 INFO L226 Difference]: Without dead ends: 16717 [2022-12-13 12:31:22,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 156 SyntacticMatches, 10 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35824 ImplicationChecksByTransitivity, 93.0s TimeCoverageRelationStatistics Valid=11577, Invalid=88595, Unknown=0, NotChecked=0, Total=100172 [2022-12-13 12:31:22,696 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 28285 mSDsluCounter, 24646 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28285 SdHoareTripleChecker+Valid, 26250 SdHoareTripleChecker+Invalid, 4194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:31:22,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28285 Valid, 26250 Invalid, 4194 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [339 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-12-13 12:31:22,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16717 states. [2022-12-13 12:31:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16717 to 8492. [2022-12-13 12:31:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8492 states, 8490 states have (on average 1.2925795053003533) internal successors, (10974), 8491 states have internal predecessors, (10974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8492 states to 8492 states and 10974 transitions. [2022-12-13 12:31:25,460 INFO L78 Accepts]: Start accepts. Automaton has 8492 states and 10974 transitions. Word has length 103 [2022-12-13 12:31:25,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:31:25,461 INFO L495 AbstractCegarLoop]: Abstraction has 8492 states and 10974 transitions. [2022-12-13 12:31:25,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 8492 states and 10974 transitions. [2022-12-13 12:31:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 12:31:25,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:31:25,462 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:25,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:31:25,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 12:31:25,663 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:31:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash -897532676, now seen corresponding path program 1 times [2022-12-13 12:31:25,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:25,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045096088] [2022-12-13 12:31:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:31:26,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:26,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045096088] [2022-12-13 12:31:26,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045096088] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:31:26,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624747613] [2022-12-13 12:31:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:26,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:31:26,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:31:26,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:31:26,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:31:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:26,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 12:31:26,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:31:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 12:31:28,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:31:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 12:31:46,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624747613] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:31:46,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:31:46,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 25] total 63 [2022-12-13 12:31:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617718356] [2022-12-13 12:31:46,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:31:46,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-13 12:31:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-13 12:31:46,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3577, Unknown=0, NotChecked=0, Total=3906 [2022-12-13 12:31:46,367 INFO L87 Difference]: Start difference. First operand 8492 states and 10974 transitions. Second operand has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:27,679 INFO L93 Difference]: Finished difference Result 25765 states and 31680 transitions. [2022-12-13 12:33:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 323 states. [2022-12-13 12:33:27,679 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 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 104 [2022-12-13 12:33:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:27,696 INFO L225 Difference]: With dead ends: 25765 [2022-12-13 12:33:27,696 INFO L226 Difference]: Without dead ends: 20528 [2022-12-13 12:33:27,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59623 ImplicationChecksByTransitivity, 89.0s TimeCoverageRelationStatistics Valid=17035, Invalid=130037, Unknown=0, NotChecked=0, Total=147072 [2022-12-13 12:33:27,707 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 28738 mSDsluCounter, 37569 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28738 SdHoareTripleChecker+Valid, 39256 SdHoareTripleChecker+Invalid, 5800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:27,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28738 Valid, 39256 Invalid, 5800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [319 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 12:33:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20528 states. [2022-12-13 12:33:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20528 to 9886. [2022-12-13 12:33:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9886 states, 9884 states have (on average 1.2820720356131121) internal successors, (12672), 9885 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9886 states to 9886 states and 12672 transitions. [2022-12-13 12:33:31,488 INFO L78 Accepts]: Start accepts. Automaton has 9886 states and 12672 transitions. Word has length 104 [2022-12-13 12:33:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:31,488 INFO L495 AbstractCegarLoop]: Abstraction has 9886 states and 12672 transitions. [2022-12-13 12:33:31,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 9886 states and 12672 transitions. [2022-12-13 12:33:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 12:33:31,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:31,490 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:31,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:33:31,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 12:33:31,691 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2047223651, now seen corresponding path program 1 times [2022-12-13 12:33:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:31,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46723248] [2022-12-13 12:33:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:33,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:33,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46723248] [2022-12-13 12:33:33,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46723248] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:33,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324424583] [2022-12-13 12:33:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:33,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:33,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:33,039 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:33,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:33:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 12:33:33,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:34,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:36,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324424583] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:36,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:33:36,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 15] total 52 [2022-12-13 12:33:36,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898397057] [2022-12-13 12:33:36,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:36,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 12:33:36,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 12:33:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 12:33:36,307 INFO L87 Difference]: Start difference. First operand 9886 states and 12672 transitions. Second operand has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:32,008 INFO L93 Difference]: Finished difference Result 29505 states and 35927 transitions. [2022-12-13 12:34:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-12-13 12:34:32,008 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-12-13 12:34:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:32,032 INFO L225 Difference]: With dead ends: 29505 [2022-12-13 12:34:32,033 INFO L226 Difference]: Without dead ends: 26372 [2022-12-13 12:34:32,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18966 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=7474, Invalid=45656, Unknown=0, NotChecked=0, Total=53130 [2022-12-13 12:34:32,040 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 24761 mSDsluCounter, 26759 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24761 SdHoareTripleChecker+Valid, 28313 SdHoareTripleChecker+Invalid, 3437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:32,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24761 Valid, 28313 Invalid, 3437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [314 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 12:34:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26372 states. [2022-12-13 12:34:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26372 to 13881. [2022-12-13 12:34:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13881 states, 13879 states have (on average 1.266085452842424) internal successors, (17572), 13880 states have internal predecessors, (17572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13881 states to 13881 states and 17572 transitions. [2022-12-13 12:34:38,376 INFO L78 Accepts]: Start accepts. Automaton has 13881 states and 17572 transitions. Word has length 105 [2022-12-13 12:34:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:38,376 INFO L495 AbstractCegarLoop]: Abstraction has 13881 states and 17572 transitions. [2022-12-13 12:34:38,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13881 states and 17572 transitions. [2022-12-13 12:34:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 12:34:38,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:38,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:38,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:34:38,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:38,579 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:38,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2022-12-13 12:34:38,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:38,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248102838] [2022-12-13 12:34:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:34:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248102838] [2022-12-13 12:34:39,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248102838] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:39,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115572106] [2022-12-13 12:34:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:39,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:39,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:39,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:39,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:34:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:39,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 12:34:39,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:34:41,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:34:48,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115572106] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:48,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:34:48,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-12-13 12:34:48,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890969026] [2022-12-13 12:34:48,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:48,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-13 12:34:48,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:48,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-13 12:34:48,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3588, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 12:34:48,228 INFO L87 Difference]: Start difference. First operand 13881 states and 17572 transitions. Second operand has 64 states, 64 states have (on average 4.453125) internal successors, (285), 64 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:55,394 INFO L93 Difference]: Finished difference Result 96298 states and 117876 transitions. [2022-12-13 12:39:55,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 695 states. [2022-12-13 12:39:55,394 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.453125) internal successors, (285), 64 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-12-13 12:39:55,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:55,494 INFO L225 Difference]: With dead ends: 96298 [2022-12-13 12:39:55,495 INFO L226 Difference]: Without dead ends: 86744 [2022-12-13 12:39:55,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 156 SyntacticMatches, 13 SemanticMatches, 750 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267763 ImplicationChecksByTransitivity, 240.6s TimeCoverageRelationStatistics Valid=71760, Invalid=492992, Unknown=0, NotChecked=0, Total=564752 [2022-12-13 12:39:55,542 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 32412 mSDsluCounter, 37565 mSDsCounter, 0 mSdLazyCounter, 7484 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32412 SdHoareTripleChecker+Valid, 39479 SdHoareTripleChecker+Invalid, 8169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 7484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:55,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32412 Valid, 39479 Invalid, 8169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [685 Valid, 7484 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-12-13 12:39:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86744 states. [2022-12-13 12:40:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86744 to 28934. [2022-12-13 12:40:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28934 states, 28932 states have (on average 1.2428452924097884) internal successors, (35958), 28933 states have internal predecessors, (35958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28934 states to 28934 states and 35958 transitions. [2022-12-13 12:40:11,776 INFO L78 Accepts]: Start accepts. Automaton has 28934 states and 35958 transitions. Word has length 105 [2022-12-13 12:40:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:11,777 INFO L495 AbstractCegarLoop]: Abstraction has 28934 states and 35958 transitions. [2022-12-13 12:40:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.453125) internal successors, (285), 64 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand 28934 states and 35958 transitions. [2022-12-13 12:40:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 12:40:11,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:11,778 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:40:11,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 12:40:11,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:40:11,980 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:11,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1322155965, now seen corresponding path program 1 times [2022-12-13 12:40:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:11,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809737848] [2022-12-13 12:40:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:12,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:12,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809737848] [2022-12-13 12:40:12,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809737848] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:40:12,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569874193] [2022-12-13 12:40:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:12,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:40:12,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:40:12,738 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:40:12,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f31a7f-e2e3-48f5-864e-e443b8349ee6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:40:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:12,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 12:40:12,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:40:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:16,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:40:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:18,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569874193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:40:18,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:40:18,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 18] total 54 [2022-12-13 12:40:18,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327572450] [2022-12-13 12:40:18,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:40:18,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-13 12:40:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-13 12:40:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2618, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 12:40:18,986 INFO L87 Difference]: Start difference. First operand 28934 states and 35958 transitions. Second operand has 54 states, 54 states have (on average 5.555555555555555) internal successors, (300), 54 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:42:06,320 INFO L93 Difference]: Finished difference Result 74179 states and 90655 transitions. [2022-12-13 12:42:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-12-13 12:42:06,321 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.555555555555555) internal successors, (300), 54 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-12-13 12:42:06,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:42:06,402 INFO L225 Difference]: With dead ends: 74179 [2022-12-13 12:42:06,402 INFO L226 Difference]: Without dead ends: 68548 [2022-12-13 12:42:06,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21025 ImplicationChecksByTransitivity, 54.1s TimeCoverageRelationStatistics Valid=7082, Invalid=53188, Unknown=0, NotChecked=0, Total=60270 [2022-12-13 12:42:06,421 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 19813 mSDsluCounter, 30522 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19813 SdHoareTripleChecker+Valid, 32184 SdHoareTripleChecker+Invalid, 3998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:42:06,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19813 Valid, 32184 Invalid, 3998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [303 Valid, 3695 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 12:42:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68548 states.