./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.1.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_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/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_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/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_405d63cd-cd13-4557-99a1-2a39723f3146/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 efc92ee60896c90c011de1b2bfbbacbaf55c425dc3f9c21220c5b12996e4a346 --- 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 15:05:07,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:05:07,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:05:08,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:05:08,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:05:08,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:05:08,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:05:08,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:05:08,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:05:08,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:05:08,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:05:08,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:05:08,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:05:08,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:05:08,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:05:08,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:05:08,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:05:08,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:05:08,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:05:08,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:05:08,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:05:08,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:05:08,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:05:08,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:05:08,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:05:08,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:05:08,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:05:08,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:05:08,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:05:08,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:05:08,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:05:08,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:05:08,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:05:08,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:05:08,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:05:08,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:05:08,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:05:08,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:05:08,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:05:08,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:05:08,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:05:08,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:05:08,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:05:08,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:05:08,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:05:08,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:05:08,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:05:08,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:05:08,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:05:08,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:05:08,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:05:08,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:05:08,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:05:08,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:05:08,043 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:05:08,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:05:08,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:05:08,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:05:08,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:05:08,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:05:08,044 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:05:08,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:05:08,045 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:05:08,045 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_405d63cd-cd13-4557-99a1-2a39723f3146/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efc92ee60896c90c011de1b2bfbbacbaf55c425dc3f9c21220c5b12996e4a346 [2022-12-13 15:05:08,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:05:08,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:05:08,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:05:08,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:05:08,251 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:05:08,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-12-13 15:05:10,882 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:05:11,197 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:05:11,198 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-12-13 15:05:11,221 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/data/24d58c07f/b0d05cb42ffd4a00be10b01193a6646d/FLAG651f14bce [2022-12-13 15:05:11,232 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/data/24d58c07f/b0d05cb42ffd4a00be10b01193a6646d [2022-12-13 15:05:11,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:05:11,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:05:11,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:05:11,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:05:11,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:05:11,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:05:11" (1/1) ... [2022-12-13 15:05:11,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f3fd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:11, skipping insertion in model container [2022-12-13 15:05:11,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:05:11" (1/1) ... [2022-12-13 15:05:11,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:05:11,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:05:11,591 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_405d63cd-cd13-4557-99a1-2a39723f3146/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c[20491,20504] [2022-12-13 15:05:11,634 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_405d63cd-cd13-4557-99a1-2a39723f3146/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c[27781,27794] [2022-12-13 15:05:12,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:05:12,156 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:05:12,183 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_405d63cd-cd13-4557-99a1-2a39723f3146/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c[20491,20504] [2022-12-13 15:05:12,190 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_405d63cd-cd13-4557-99a1-2a39723f3146/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c[27781,27794] [2022-12-13 15:05:12,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:05:12,559 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:05:12,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12 WrapperNode [2022-12-13 15:05:12,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:05:12,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:05:12,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:05:12,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:05:12,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:12,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:12,842 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5181 [2022-12-13 15:05:12,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:05:12,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:05:12,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:05:12,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:05:12,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:12,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:12,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:12,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:13,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:13,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:13,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:13,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:13,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:05:13,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:05:13,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:05:13,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:05:13,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (1/1) ... [2022-12-13 15:05:13,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:05:13,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:05:13,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:05:13,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:05:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:05:13,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:05:13,340 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:05:13,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:05:16,866 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:05:16,881 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:05:16,881 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:05:16,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:05:16 BoogieIcfgContainer [2022-12-13 15:05:16,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:05:16,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:05:16,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:05:16,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:05:16,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:05:11" (1/3) ... [2022-12-13 15:05:16,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb5983e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:05:16, skipping insertion in model container [2022-12-13 15:05:16,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:12" (2/3) ... [2022-12-13 15:05:16,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb5983e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:05:16, skipping insertion in model container [2022-12-13 15:05:16,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:05:16" (3/3) ... [2022-12-13 15:05:16,893 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-12-13 15:05:16,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:05:16,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:05:16,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:05:16,978 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;@11549d01, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:05:16,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 15:05:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 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 15:05:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 15:05:16,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:16,990 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] [2022-12-13 15:05:16,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:16,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash -28928260, now seen corresponding path program 1 times [2022-12-13 15:05:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:17,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515465514] [2022-12-13 15:05:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:17,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:17,146 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 15:05:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515465514] [2022-12-13 15:05:17,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515465514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:17,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:17,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:05:17,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161941026] [2022-12-13 15:05:17,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:05:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:05:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:05:17,177 INFO L87 Difference]: Start difference. First operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 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) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 15:05:17,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:17,241 INFO L93 Difference]: Finished difference Result 1806 states and 3426 transitions. [2022-12-13 15:05:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:05:17,243 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-12-13 15:05:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:17,254 INFO L225 Difference]: With dead ends: 1806 [2022-12-13 15:05:17,255 INFO L226 Difference]: Without dead ends: 866 [2022-12-13 15:05:17,259 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 15:05:17,261 INFO L413 NwaCegarLoop]: 1699 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, 1699 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 15:05:17,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:17,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-12-13 15:05:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2022-12-13 15:05:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8923611111111112) internal successors, (1635), 865 states have internal predecessors, (1635), 0 states have call successors, (0), 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 15:05:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1635 transitions. [2022-12-13 15:05:17,318 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1635 transitions. Word has length 28 [2022-12-13 15:05:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:17,318 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1635 transitions. [2022-12-13 15:05:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 15:05:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1635 transitions. [2022-12-13 15:05:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 15:05:17,319 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:17,319 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] [2022-12-13 15:05:17,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:05:17,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:17,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash 189926458, now seen corresponding path program 1 times [2022-12-13 15:05:17,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:17,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963476569] [2022-12-13 15:05:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:17,486 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 15:05:17,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:17,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963476569] [2022-12-13 15:05:17,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963476569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:17,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:17,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:05:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565114136] [2022-12-13 15:05:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:17,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:05:17,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:05:17,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:05:17,490 INFO L87 Difference]: Start difference. First operand 866 states and 1635 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 15:05:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:17,625 INFO L93 Difference]: Finished difference Result 926 states and 1729 transitions. [2022-12-13 15:05:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:05:17,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-12-13 15:05:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:17,632 INFO L225 Difference]: With dead ends: 926 [2022-12-13 15:05:17,632 INFO L226 Difference]: Without dead ends: 866 [2022-12-13 15:05:17,633 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 15:05:17,634 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 3 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6479 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:05:17,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6479 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-12-13 15:05:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2022-12-13 15:05:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8344907407407407) internal successors, (1585), 865 states have internal predecessors, (1585), 0 states have call successors, (0), 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 15:05:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1585 transitions. [2022-12-13 15:05:17,654 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1585 transitions. Word has length 28 [2022-12-13 15:05:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:17,655 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1585 transitions. [2022-12-13 15:05:17,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 15:05:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1585 transitions. [2022-12-13 15:05:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 15:05:17,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:17,656 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 15:05:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:05:17,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1515998071, now seen corresponding path program 1 times [2022-12-13 15:05:17,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:17,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934070147] [2022-12-13 15:05:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:17,826 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 15:05:17,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:17,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934070147] [2022-12-13 15:05:17,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934070147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:17,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:17,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:17,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878579159] [2022-12-13 15:05:17,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:17,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:05:17,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:17,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:05:17,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:05:17,829 INFO L87 Difference]: Start difference. First operand 866 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 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 15:05:23,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:23,318 INFO L93 Difference]: Finished difference Result 3121 states and 5894 transitions. [2022-12-13 15:05:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:05:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 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 15:05:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:23,326 INFO L225 Difference]: With dead ends: 3121 [2022-12-13 15:05:23,327 INFO L226 Difference]: Without dead ends: 2368 [2022-12-13 15:05:23,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:05:23,329 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 2479 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:05:23,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2479 Valid, 839 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-13 15:05:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-12-13 15:05:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2022-12-13 15:05:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2366 states have (on average 1.5633981403212172) internal successors, (3699), 2367 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:05:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3699 transitions. [2022-12-13 15:05:23,390 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3699 transitions. Word has length 63 [2022-12-13 15:05:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:23,390 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 3699 transitions. [2022-12-13 15:05:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 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 15:05:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3699 transitions. [2022-12-13 15:05:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 15:05:23,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:23,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:05:23,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1109970983, now seen corresponding path program 1 times [2022-12-13 15:05:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:23,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050038780] [2022-12-13 15:05:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:23,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:23,559 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 15:05:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:23,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050038780] [2022-12-13 15:05:23,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050038780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:23,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:23,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:05:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452148259] [2022-12-13 15:05:23,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:23,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:05:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:05:23,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:05:23,561 INFO L87 Difference]: Start difference. First operand 2368 states and 3699 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 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 15:05:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:23,868 INFO L93 Difference]: Finished difference Result 3152 states and 4959 transitions. [2022-12-13 15:05:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:05:23,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-12-13 15:05:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:23,874 INFO L225 Difference]: With dead ends: 3152 [2022-12-13 15:05:23,875 INFO L226 Difference]: Without dead ends: 3096 [2022-12-13 15:05:23,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:05:23,877 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 11614 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11614 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:05:23,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11614 Valid, 4325 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:05:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2022-12-13 15:05:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2422. [2022-12-13 15:05:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2420 states have (on average 1.5644628099173554) internal successors, (3786), 2421 states have internal predecessors, (3786), 0 states have call successors, (0), 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 15:05:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3786 transitions. [2022-12-13 15:05:23,920 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3786 transitions. Word has length 77 [2022-12-13 15:05:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:23,920 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 3786 transitions. [2022-12-13 15:05:23,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 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 15:05:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3786 transitions. [2022-12-13 15:05:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 15:05:23,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:23,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:23,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:05:23,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1349050793, now seen corresponding path program 1 times [2022-12-13 15:05:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:23,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538848977] [2022-12-13 15:05:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:24,009 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 15:05:24,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:24,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538848977] [2022-12-13 15:05:24,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538848977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:24,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:24,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675693917] [2022-12-13 15:05:24,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:24,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:24,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:24,012 INFO L87 Difference]: Start difference. First operand 2422 states and 3786 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 15:05:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:24,070 INFO L93 Difference]: Finished difference Result 2631 states and 4121 transitions. [2022-12-13 15:05:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:24,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-12-13 15:05:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:24,076 INFO L225 Difference]: With dead ends: 2631 [2022-12-13 15:05:24,076 INFO L226 Difference]: Without dead ends: 2521 [2022-12-13 15:05:24,077 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 15:05:24,078 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1500 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1664 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 15:05:24,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1664 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2022-12-13 15:05:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2517. [2022-12-13 15:05:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5650099403578528) internal successors, (3936), 2516 states have internal predecessors, (3936), 0 states have call successors, (0), 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 15:05:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3936 transitions. [2022-12-13 15:05:24,124 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3936 transitions. Word has length 79 [2022-12-13 15:05:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:24,124 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 3936 transitions. [2022-12-13 15:05:24,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 15:05:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3936 transitions. [2022-12-13 15:05:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 15:05:24,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:24,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:24,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:05:24,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1415544305, now seen corresponding path program 1 times [2022-12-13 15:05:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:24,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815028996] [2022-12-13 15:05:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:24,396 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 15:05:24,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:24,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815028996] [2022-12-13 15:05:24,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815028996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:24,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:24,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:05:24,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820808466] [2022-12-13 15:05:24,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:24,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:05:24,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:24,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:05:24,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:05:24,398 INFO L87 Difference]: Start difference. First operand 2517 states and 3936 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 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 15:05:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:24,688 INFO L93 Difference]: Finished difference Result 2724 states and 4264 transitions. [2022-12-13 15:05:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:05:24,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-12-13 15:05:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:24,694 INFO L225 Difference]: With dead ends: 2724 [2022-12-13 15:05:24,694 INFO L226 Difference]: Without dead ends: 2519 [2022-12-13 15:05:24,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:05:24,695 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 3064 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:05:24,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3064 Valid, 2114 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:05:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-12-13 15:05:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2517. [2022-12-13 15:05:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5642147117296223) internal successors, (3934), 2516 states have internal predecessors, (3934), 0 states have call successors, (0), 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 15:05:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3934 transitions. [2022-12-13 15:05:24,740 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3934 transitions. Word has length 79 [2022-12-13 15:05:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:24,740 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 3934 transitions. [2022-12-13 15:05:24,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 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 15:05:24,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3934 transitions. [2022-12-13 15:05:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 15:05:24,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:24,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:24,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:05:24,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash 517477589, now seen corresponding path program 1 times [2022-12-13 15:05:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:24,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952947804] [2022-12-13 15:05:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:24,917 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 15:05:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952947804] [2022-12-13 15:05:24,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952947804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:24,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:24,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 15:05:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006325444] [2022-12-13 15:05:24,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:24,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:05:24,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:05:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:05:24,919 INFO L87 Difference]: Start difference. First operand 2517 states and 3934 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 15:05:25,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:25,108 INFO L93 Difference]: Finished difference Result 2718 states and 4248 transitions. [2022-12-13 15:05:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:05:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-12-13 15:05:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:25,113 INFO L225 Difference]: With dead ends: 2718 [2022-12-13 15:05:25,113 INFO L226 Difference]: Without dead ends: 2716 [2022-12-13 15:05:25,114 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 15:05:25,114 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 532 mSDsluCounter, 9218 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 10881 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 15:05:25,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 10881 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-12-13 15:05:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 2523. [2022-12-13 15:05:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2521 states have (on average 1.562475208250694) internal successors, (3939), 2522 states have internal predecessors, (3939), 0 states have call successors, (0), 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 15:05:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3939 transitions. [2022-12-13 15:05:25,159 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3939 transitions. Word has length 80 [2022-12-13 15:05:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:25,159 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 3939 transitions. [2022-12-13 15:05:25,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 15:05:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3939 transitions. [2022-12-13 15:05:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:05:25,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:25,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:25,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:05:25,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -927531695, now seen corresponding path program 1 times [2022-12-13 15:05:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:25,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795577545] [2022-12-13 15:05:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:25,198 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 15:05:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:25,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795577545] [2022-12-13 15:05:25,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795577545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:25,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:25,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919126903] [2022-12-13 15:05:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:25,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:25,201 INFO L87 Difference]: Start difference. First operand 2523 states and 3939 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:25,264 INFO L93 Difference]: Finished difference Result 2929 states and 4571 transitions. [2022-12-13 15:05:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-12-13 15:05:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:25,270 INFO L225 Difference]: With dead ends: 2929 [2022-12-13 15:05:25,271 INFO L226 Difference]: Without dead ends: 2718 [2022-12-13 15:05:25,271 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 15:05:25,272 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1517 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1747 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 15:05:25,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2022-12-13 15:05:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2716. [2022-12-13 15:05:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2714 states have (on average 1.5607958732498157) internal successors, (4236), 2715 states have internal predecessors, (4236), 0 states have call successors, (0), 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 15:05:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4236 transitions. [2022-12-13 15:05:25,335 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4236 transitions. Word has length 81 [2022-12-13 15:05:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:25,335 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 4236 transitions. [2022-12-13 15:05:25,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4236 transitions. [2022-12-13 15:05:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:05:25,336 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:25,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:25,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:05:25,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -764617135, now seen corresponding path program 1 times [2022-12-13 15:05:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:25,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618421932] [2022-12-13 15:05:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:25,373 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 15:05:25,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:25,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618421932] [2022-12-13 15:05:25,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618421932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:25,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:25,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198618867] [2022-12-13 15:05:25,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:25,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:25,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:25,375 INFO L87 Difference]: Start difference. First operand 2716 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:25,476 INFO L93 Difference]: Finished difference Result 3492 states and 5434 transitions. [2022-12-13 15:05:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:25,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-12-13 15:05:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:25,482 INFO L225 Difference]: With dead ends: 3492 [2022-12-13 15:05:25,483 INFO L226 Difference]: Without dead ends: 3088 [2022-12-13 15:05:25,484 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 15:05:25,484 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1515 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1749 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 15:05:25,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2022-12-13 15:05:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 3086. [2022-12-13 15:05:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3084 states have (on average 1.5557717250324254) internal successors, (4798), 3085 states have internal predecessors, (4798), 0 states have call successors, (0), 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 15:05:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4798 transitions. [2022-12-13 15:05:25,609 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4798 transitions. Word has length 81 [2022-12-13 15:05:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:25,610 INFO L495 AbstractCegarLoop]: Abstraction has 3086 states and 4798 transitions. [2022-12-13 15:05:25,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4798 transitions. [2022-12-13 15:05:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:05:25,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:25,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:25,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:05:25,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 737501265, now seen corresponding path program 1 times [2022-12-13 15:05:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:25,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346464483] [2022-12-13 15:05:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:25,651 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 15:05:25,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346464483] [2022-12-13 15:05:25,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346464483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:25,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:25,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097714788] [2022-12-13 15:05:25,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:25,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:25,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:25,653 INFO L87 Difference]: Start difference. First operand 3086 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:25,825 INFO L93 Difference]: Finished difference Result 4570 states and 7064 transitions. [2022-12-13 15:05:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-12-13 15:05:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:25,833 INFO L225 Difference]: With dead ends: 4570 [2022-12-13 15:05:25,833 INFO L226 Difference]: Without dead ends: 3796 [2022-12-13 15:05:25,834 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 15:05:25,835 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1511 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1745 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 15:05:25,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2022-12-13 15:05:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3794. [2022-12-13 15:05:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3792 states have (on average 1.544831223628692) internal successors, (5858), 3793 states have internal predecessors, (5858), 0 states have call successors, (0), 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 15:05:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 5858 transitions. [2022-12-13 15:05:26,009 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 5858 transitions. Word has length 81 [2022-12-13 15:05:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:26,009 INFO L495 AbstractCegarLoop]: Abstraction has 3794 states and 5858 transitions. [2022-12-13 15:05:26,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 5858 transitions. [2022-12-13 15:05:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:05:26,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:26,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:26,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:05:26,010 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1477967535, now seen corresponding path program 1 times [2022-12-13 15:05:26,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:26,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757878094] [2022-12-13 15:05:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:26,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:26,076 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 15:05:26,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:26,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757878094] [2022-12-13 15:05:26,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757878094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:26,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:26,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118983309] [2022-12-13 15:05:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:26,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:26,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:26,078 INFO L87 Difference]: Start difference. First operand 3794 states and 5858 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:26,439 INFO L93 Difference]: Finished difference Result 6630 states and 10132 transitions. [2022-12-13 15:05:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-12-13 15:05:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:26,446 INFO L225 Difference]: With dead ends: 6630 [2022-12-13 15:05:26,446 INFO L226 Difference]: Without dead ends: 5148 [2022-12-13 15:05:26,448 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 15:05:26,449 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 1509 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1747 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 15:05:26,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2022-12-13 15:05:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 5146. [2022-12-13 15:05:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5144 states have (on average 1.526049766718507) internal successors, (7850), 5145 states have internal predecessors, (7850), 0 states have call successors, (0), 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 15:05:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7850 transitions. [2022-12-13 15:05:26,772 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7850 transitions. Word has length 81 [2022-12-13 15:05:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:26,772 INFO L495 AbstractCegarLoop]: Abstraction has 5146 states and 7850 transitions. [2022-12-13 15:05:26,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7850 transitions. [2022-12-13 15:05:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:05:26,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:26,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:26,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:05:26,774 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 302965329, now seen corresponding path program 1 times [2022-12-13 15:05:26,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:26,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794142337] [2022-12-13 15:05:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:26,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:26,811 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 15:05:26,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:26,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794142337] [2022-12-13 15:05:26,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794142337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:26,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:26,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:26,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2679549] [2022-12-13 15:05:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:26,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:26,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:26,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:26,813 INFO L87 Difference]: Start difference. First operand 5146 states and 7850 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:27,378 INFO L93 Difference]: Finished difference Result 10558 states and 15884 transitions. [2022-12-13 15:05:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-12-13 15:05:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:27,387 INFO L225 Difference]: With dead ends: 10558 [2022-12-13 15:05:27,388 INFO L226 Difference]: Without dead ends: 7724 [2022-12-13 15:05:27,390 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 15:05:27,391 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 1507 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1749 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 15:05:27,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2022-12-13 15:05:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 7722. [2022-12-13 15:05:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 7720 states have (on average 1.499740932642487) internal successors, (11578), 7721 states have internal predecessors, (11578), 0 states have call successors, (0), 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 15:05:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11578 transitions. [2022-12-13 15:05:27,976 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11578 transitions. Word has length 81 [2022-12-13 15:05:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:27,976 INFO L495 AbstractCegarLoop]: Abstraction has 7722 states and 11578 transitions. [2022-12-13 15:05:27,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11578 transitions. [2022-12-13 15:05:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:05:27,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:27,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:27,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:05:27,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -500760751, now seen corresponding path program 1 times [2022-12-13 15:05:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:27,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818214524] [2022-12-13 15:05:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:28,014 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 15:05:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:28,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818214524] [2022-12-13 15:05:28,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818214524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:28,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:28,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:28,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602362102] [2022-12-13 15:05:28,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:28,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:28,015 INFO L87 Difference]: Start difference. First operand 7722 states and 11578 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:29,141 INFO L93 Difference]: Finished difference Result 18030 states and 26620 transitions. [2022-12-13 15:05:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-12-13 15:05:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:29,159 INFO L225 Difference]: With dead ends: 18030 [2022-12-13 15:05:29,159 INFO L226 Difference]: Without dead ends: 12620 [2022-12-13 15:05:29,164 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 15:05:29,164 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1513 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1751 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 15:05:29,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1751 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12620 states. [2022-12-13 15:05:30,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12620 to 12618. [2022-12-13 15:05:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12616 states have (on average 1.4681357006975269) internal successors, (18522), 12617 states have internal predecessors, (18522), 0 states have call successors, (0), 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 15:05:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 18522 transitions. [2022-12-13 15:05:30,385 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 18522 transitions. Word has length 81 [2022-12-13 15:05:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:30,385 INFO L495 AbstractCegarLoop]: Abstraction has 12618 states and 18522 transitions. [2022-12-13 15:05:30,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 15:05:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 18522 transitions. [2022-12-13 15:05:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 15:05:30,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:30,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:30,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:05:30,386 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:30,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1125158260, now seen corresponding path program 1 times [2022-12-13 15:05:30,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:30,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673071560] [2022-12-13 15:05:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:30,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:30,420 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 15:05:30,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:30,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673071560] [2022-12-13 15:05:30,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673071560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:30,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:30,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:30,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000204772] [2022-12-13 15:05:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:30,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:05:30,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:30,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:30,422 INFO L87 Difference]: Start difference. First operand 12618 states and 18522 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 15:05:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:32,226 INFO L93 Difference]: Finished difference Result 23377 states and 34272 transitions. [2022-12-13 15:05:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-12-13 15:05:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:32,245 INFO L225 Difference]: With dead ends: 23377 [2022-12-13 15:05:32,245 INFO L226 Difference]: Without dead ends: 17614 [2022-12-13 15:05:32,250 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 15:05:32,250 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 1516 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1748 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 15:05:32,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:05:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17614 states. [2022-12-13 15:05:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17614 to 17612. [2022-12-13 15:05:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17612 states, 17610 states have (on average 1.4553094832481546) internal successors, (25628), 17611 states have internal predecessors, (25628), 0 states have call successors, (0), 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 15:05:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17612 states to 17612 states and 25628 transitions. [2022-12-13 15:05:34,234 INFO L78 Accepts]: Start accepts. Automaton has 17612 states and 25628 transitions. Word has length 83 [2022-12-13 15:05:34,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:34,234 INFO L495 AbstractCegarLoop]: Abstraction has 17612 states and 25628 transitions. [2022-12-13 15:05:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 15:05:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 17612 states and 25628 transitions. [2022-12-13 15:05:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:05:34,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:34,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:05:34,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash -293163275, now seen corresponding path program 1 times [2022-12-13 15:05:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:34,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100439071] [2022-12-13 15:05:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:05:34,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:34,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100439071] [2022-12-13 15:05:34,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100439071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:34,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:34,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:05:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869481246] [2022-12-13 15:05:34,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:34,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:05:34,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:05:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:05:34,383 INFO L87 Difference]: Start difference. First operand 17612 states and 25628 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 15:05:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:48,629 INFO L93 Difference]: Finished difference Result 127836 states and 184100 transitions. [2022-12-13 15:05:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:05:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 15:05:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:05:48,837 INFO L225 Difference]: With dead ends: 127836 [2022-12-13 15:05:48,838 INFO L226 Difference]: Without dead ends: 112538 [2022-12-13 15:05:48,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:05:48,857 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 9903 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9903 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:05:48,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9903 Valid, 4445 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:05:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112538 states. [2022-12-13 15:05:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112538 to 32908. [2022-12-13 15:05:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32908 states, 32906 states have (on average 1.4420470430924452) internal successors, (47452), 32907 states have internal predecessors, (47452), 0 states have call successors, (0), 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 15:05:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 47452 transitions. [2022-12-13 15:05:54,016 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 47452 transitions. Word has length 104 [2022-12-13 15:05:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:54,017 INFO L495 AbstractCegarLoop]: Abstraction has 32908 states and 47452 transitions. [2022-12-13 15:05:54,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 15:05:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 47452 transitions. [2022-12-13 15:05:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:05:54,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:05:54,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:54,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:05:54,020 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:05:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash -130248715, now seen corresponding path program 1 times [2022-12-13 15:05:54,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:54,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513837619] [2022-12-13 15:05:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:05:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:54,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513837619] [2022-12-13 15:05:54,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513837619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:54,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:54,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:05:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573457532] [2022-12-13 15:05:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:05:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:05:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:05:54,146 INFO L87 Difference]: Start difference. First operand 32908 states and 47452 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:06:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:06:13,506 INFO L93 Difference]: Finished difference Result 143132 states and 205924 transitions. [2022-12-13 15:06:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:06:13,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-12-13 15:06:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:06:13,687 INFO L225 Difference]: With dead ends: 143132 [2022-12-13 15:06:13,687 INFO L226 Difference]: Without dead ends: 127834 [2022-12-13 15:06:13,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:06:13,707 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 9953 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9953 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:06:13,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9953 Valid, 4275 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:06:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127834 states. [2022-12-13 15:06:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127834 to 55884. [2022-12-13 15:06:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55884 states, 55882 states have (on average 1.4320890447729144) internal successors, (80028), 55883 states have internal predecessors, (80028), 0 states have call successors, (0), 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 15:06:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55884 states to 55884 states and 80028 transitions. [2022-12-13 15:06:23,275 INFO L78 Accepts]: Start accepts. Automaton has 55884 states and 80028 transitions. Word has length 104 [2022-12-13 15:06:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:06:23,275 INFO L495 AbstractCegarLoop]: Abstraction has 55884 states and 80028 transitions. [2022-12-13 15:06:23,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:06:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 55884 states and 80028 transitions. [2022-12-13 15:06:23,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:06:23,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:06:23,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:06:23,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:06:23,280 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:06:23,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:06:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1371869685, now seen corresponding path program 1 times [2022-12-13 15:06:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:06:23,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326507449] [2022-12-13 15:06:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:06:23,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:06:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:06:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 15:06:23,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:06:23,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326507449] [2022-12-13 15:06:23,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326507449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:06:23,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:06:23,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:06:23,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591334049] [2022-12-13 15:06:23,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:06:23,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:06:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:06:23,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:06:23,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:06:23,413 INFO L87 Difference]: Start difference. First operand 55884 states and 80028 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:06:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:06:47,359 INFO L93 Difference]: Finished difference Result 158428 states and 227748 transitions. [2022-12-13 15:06:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:06:47,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-12-13 15:06:47,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:06:47,543 INFO L225 Difference]: With dead ends: 158428 [2022-12-13 15:06:47,543 INFO L226 Difference]: Without dead ends: 143130 [2022-12-13 15:06:47,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:06:47,571 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 10022 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10022 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:06:47,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10022 Valid, 4306 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:06:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143130 states. [2022-12-13 15:07:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143130 to 71180. [2022-12-13 15:07:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71180 states, 71178 states have (on average 1.4309477647587738) internal successors, (101852), 71179 states have internal predecessors, (101852), 0 states have call successors, (0), 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 15:07:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71180 states to 71180 states and 101852 transitions. [2022-12-13 15:07:00,169 INFO L78 Accepts]: Start accepts. Automaton has 71180 states and 101852 transitions. Word has length 104 [2022-12-13 15:07:00,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:07:00,170 INFO L495 AbstractCegarLoop]: Abstraction has 71180 states and 101852 transitions. [2022-12-13 15:07:00,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 71180 states and 101852 transitions. [2022-12-13 15:07:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:07:00,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:07:00,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:07:00,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:07:00,174 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:07:00,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash -843599115, now seen corresponding path program 1 times [2022-12-13 15:07:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:00,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125802750] [2022-12-13 15:07:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:00,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 15:07:00,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125802750] [2022-12-13 15:07:00,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125802750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:00,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:00,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:07:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234583340] [2022-12-13 15:07:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:00,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:07:00,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:07:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:07:00,307 INFO L87 Difference]: Start difference. First operand 71180 states and 101852 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:07:28,927 INFO L93 Difference]: Finished difference Result 173724 states and 249572 transitions. [2022-12-13 15:07:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:07:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-12-13 15:07:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:07:29,134 INFO L225 Difference]: With dead ends: 173724 [2022-12-13 15:07:29,134 INFO L226 Difference]: Without dead ends: 158426 [2022-12-13 15:07:29,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:07:29,163 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 10093 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10093 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:07:29,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10093 Valid, 4243 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:07:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158426 states. [2022-12-13 15:07:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158426 to 86476. [2022-12-13 15:07:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86476 states, 86474 states have (on average 1.4302102366029095) internal successors, (123676), 86475 states have internal predecessors, (123676), 0 states have call successors, (0), 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 15:07:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86476 states to 86476 states and 123676 transitions. [2022-12-13 15:07:45,184 INFO L78 Accepts]: Start accepts. Automaton has 86476 states and 123676 transitions. Word has length 104 [2022-12-13 15:07:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:07:45,184 INFO L495 AbstractCegarLoop]: Abstraction has 86476 states and 123676 transitions. [2022-12-13 15:07:45,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 86476 states and 123676 transitions. [2022-12-13 15:07:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:07:45,188 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:07:45,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:07:45,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:07:45,188 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:07:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash 937333749, now seen corresponding path program 1 times [2022-12-13 15:07:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:45,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370395668] [2022-12-13 15:07:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 15:07:45,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:45,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370395668] [2022-12-13 15:07:45,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370395668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:45,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:45,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:07:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691778206] [2022-12-13 15:07:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:07:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:07:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:07:45,314 INFO L87 Difference]: Start difference. First operand 86476 states and 123676 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 15:08:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:08:18,286 INFO L93 Difference]: Finished difference Result 189020 states and 271396 transitions. [2022-12-13 15:08:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:08:18,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 15:08:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:08:18,525 INFO L225 Difference]: With dead ends: 189020 [2022-12-13 15:08:18,525 INFO L226 Difference]: Without dead ends: 173722 [2022-12-13 15:08:18,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:08:18,557 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 9943 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9943 SdHoareTripleChecker+Valid, 4330 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:08:18,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9943 Valid, 4330 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:08:18,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173722 states. [2022-12-13 15:08:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173722 to 101772. [2022-12-13 15:08:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101772 states, 101770 states have (on average 1.4296944089613834) internal successors, (145500), 101771 states have internal predecessors, (145500), 0 states have call successors, (0), 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 15:08:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101772 states to 101772 states and 145500 transitions. [2022-12-13 15:08:38,084 INFO L78 Accepts]: Start accepts. Automaton has 101772 states and 145500 transitions. Word has length 104 [2022-12-13 15:08:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:08:38,084 INFO L495 AbstractCegarLoop]: Abstraction has 101772 states and 145500 transitions. [2022-12-13 15:08:38,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 15:08:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 101772 states and 145500 transitions. [2022-12-13 15:08:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:08:38,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:08:38,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:08:38,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:08:38,088 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:08:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:08:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash 133607669, now seen corresponding path program 1 times [2022-12-13 15:08:38,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:08:38,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904117664] [2022-12-13 15:08:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:08:38,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:08:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:08:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:08:38,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:08:38,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904117664] [2022-12-13 15:08:38,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904117664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:08:38,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:08:38,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:08:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515480124] [2022-12-13 15:08:38,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:08:38,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:08:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:08:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:08:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:08:38,215 INFO L87 Difference]: Start difference. First operand 101772 states and 145500 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 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 15:09:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:09:16,840 INFO L93 Difference]: Finished difference Result 204316 states and 293220 transitions. [2022-12-13 15:09:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:09:16,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 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 15:09:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:09:17,110 INFO L225 Difference]: With dead ends: 204316 [2022-12-13 15:09:17,110 INFO L226 Difference]: Without dead ends: 189018 [2022-12-13 15:09:17,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:09:17,149 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 9837 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9837 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:09:17,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9837 Valid, 4539 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:09:17,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189018 states. [2022-12-13 15:09:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189018 to 117068. [2022-12-13 15:09:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117068 states, 117066 states have (on average 1.4293133787777834) internal successors, (167324), 117067 states have internal predecessors, (167324), 0 states have call successors, (0), 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 15:09:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117068 states to 117068 states and 167324 transitions. [2022-12-13 15:09:40,842 INFO L78 Accepts]: Start accepts. Automaton has 117068 states and 167324 transitions. Word has length 104 [2022-12-13 15:09:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:09:40,842 INFO L495 AbstractCegarLoop]: Abstraction has 117068 states and 167324 transitions. [2022-12-13 15:09:40,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 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 15:09:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 117068 states and 167324 transitions. [2022-12-13 15:09:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 15:09:40,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:09:40,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:09:40,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:09:40,848 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:09:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:09:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash 388736525, now seen corresponding path program 1 times [2022-12-13 15:09:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:09:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874338389] [2022-12-13 15:09:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:09:40,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:09:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:09:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:09:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:09:40,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874338389] [2022-12-13 15:09:40,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874338389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:09:40,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:09:40,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:09:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315467491] [2022-12-13 15:09:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:09:40,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:09:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:09:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:09:40,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:09:40,910 INFO L87 Difference]: Start difference. First operand 117068 states and 167324 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:09:57,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:09:57,760 INFO L93 Difference]: Finished difference Result 197736 states and 283511 transitions. [2022-12-13 15:09:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:09:57,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-12-13 15:09:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:09:57,860 INFO L225 Difference]: With dead ends: 197736 [2022-12-13 15:09:57,860 INFO L226 Difference]: Without dead ends: 82982 [2022-12-13 15:09:57,903 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 15:09:57,904 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 66 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3211 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 15:09:57,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3211 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:09:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82982 states. [2022-12-13 15:10:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82982 to 82980. [2022-12-13 15:10:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82980 states, 82978 states have (on average 1.432138639157367) internal successors, (118836), 82979 states have internal predecessors, (118836), 0 states have call successors, (0), 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 15:10:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82980 states to 82980 states and 118836 transitions. [2022-12-13 15:10:14,591 INFO L78 Accepts]: Start accepts. Automaton has 82980 states and 118836 transitions. Word has length 106 [2022-12-13 15:10:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:10:14,591 INFO L495 AbstractCegarLoop]: Abstraction has 82980 states and 118836 transitions. [2022-12-13 15:10:14,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 82980 states and 118836 transitions. [2022-12-13 15:10:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 15:10:14,594 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:10:14,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:14,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:10:14,594 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:10:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1382462672, now seen corresponding path program 1 times [2022-12-13 15:10:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043553013] [2022-12-13 15:10:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:14,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:10:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:14,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043553013] [2022-12-13 15:10:14,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043553013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:14,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:14,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:10:14,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953874830] [2022-12-13 15:10:14,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:14,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:10:14,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:10:14,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:10:14,711 INFO L87 Difference]: Start difference. First operand 82980 states and 118836 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:10:48,840 INFO L93 Difference]: Finished difference Result 158260 states and 227260 transitions. [2022-12-13 15:10:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:10:48,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-12-13 15:10:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:10:49,018 INFO L225 Difference]: With dead ends: 158260 [2022-12-13 15:10:49,018 INFO L226 Difference]: Without dead ends: 147506 [2022-12-13 15:10:49,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:10:49,043 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 9914 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9914 SdHoareTripleChecker+Valid, 4670 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:10:49,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9914 Valid, 4670 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:10:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147506 states. [2022-12-13 15:11:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147506 to 93732. [2022-12-13 15:11:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93732 states, 93730 states have (on average 1.4317294356129309) internal successors, (134196), 93731 states have internal predecessors, (134196), 0 states have call successors, (0), 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 15:11:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93732 states to 93732 states and 134196 transitions. [2022-12-13 15:11:10,638 INFO L78 Accepts]: Start accepts. Automaton has 93732 states and 134196 transitions. Word has length 106 [2022-12-13 15:11:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:10,638 INFO L495 AbstractCegarLoop]: Abstraction has 93732 states and 134196 transitions. [2022-12-13 15:11:10,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 93732 states and 134196 transitions. [2022-12-13 15:11:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 15:11:10,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:10,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:10,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 15:11:10,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:11:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1784794265, now seen corresponding path program 1 times [2022-12-13 15:11:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:10,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57873042] [2022-12-13 15:11:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:10,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:10,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:10,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57873042] [2022-12-13 15:11:10,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57873042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:10,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:10,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:11:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078296192] [2022-12-13 15:11:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:10,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:11:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:10,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:11:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:11:10,701 INFO L87 Difference]: Start difference. First operand 93732 states and 134196 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:11:21,335 INFO L93 Difference]: Finished difference Result 139432 states and 199478 transitions. [2022-12-13 15:11:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:11:21,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-12-13 15:11:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:11:21,383 INFO L225 Difference]: With dead ends: 139432 [2022-12-13 15:11:21,383 INFO L226 Difference]: Without dead ends: 48038 [2022-12-13 15:11:21,414 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 15:11:21,415 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 61 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3196 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 15:11:21,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3196 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:11:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48038 states. [2022-12-13 15:11:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48038 to 48036. [2022-12-13 15:11:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48036 states, 48034 states have (on average 1.4234084190365157) internal successors, (68372), 48035 states have internal predecessors, (68372), 0 states have call successors, (0), 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 15:11:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48036 states to 48036 states and 68372 transitions. [2022-12-13 15:11:31,793 INFO L78 Accepts]: Start accepts. Automaton has 48036 states and 68372 transitions. Word has length 107 [2022-12-13 15:11:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:31,793 INFO L495 AbstractCegarLoop]: Abstraction has 48036 states and 68372 transitions. [2022-12-13 15:11:31,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 48036 states and 68372 transitions. [2022-12-13 15:11:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 15:11:31,795 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:31,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:31,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 15:11:31,796 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:11:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 171046265, now seen corresponding path program 1 times [2022-12-13 15:11:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:31,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033283300] [2022-12-13 15:11:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:31,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:31,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033283300] [2022-12-13 15:11:31,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033283300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:31,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:31,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:11:31,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029361798] [2022-12-13 15:11:31,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:31,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:11:31,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:31,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:11:31,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:11:31,871 INFO L87 Difference]: Start difference. First operand 48036 states and 68372 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:37,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:11:37,589 INFO L93 Difference]: Finished difference Result 70888 states and 100742 transitions. [2022-12-13 15:11:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:11:37,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-12-13 15:11:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:11:37,613 INFO L225 Difference]: With dead ends: 70888 [2022-12-13 15:11:37,613 INFO L226 Difference]: Without dead ends: 25190 [2022-12-13 15:11:37,629 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 15:11:37,630 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 58 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3181 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 15:11:37,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3181 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:11:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25190 states. [2022-12-13 15:11:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25190 to 25188. [2022-12-13 15:11:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25188 states, 25186 states have (on average 1.4187246883189073) internal successors, (35732), 25187 states have internal predecessors, (35732), 0 states have call successors, (0), 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 15:11:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25188 states to 25188 states and 35732 transitions. [2022-12-13 15:11:42,920 INFO L78 Accepts]: Start accepts. Automaton has 25188 states and 35732 transitions. Word has length 109 [2022-12-13 15:11:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:42,921 INFO L495 AbstractCegarLoop]: Abstraction has 25188 states and 35732 transitions. [2022-12-13 15:11:42,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:42,921 INFO L276 IsEmpty]: Start isEmpty. Operand 25188 states and 35732 transitions. [2022-12-13 15:11:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 15:11:42,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:42,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:42,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 15:11:42,924 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:11:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2064578059, now seen corresponding path program 1 times [2022-12-13 15:11:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:42,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582099023] [2022-12-13 15:11:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:42,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:42,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582099023] [2022-12-13 15:11:42,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582099023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:42,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:42,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:11:42,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320033158] [2022-12-13 15:11:42,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:42,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:11:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:11:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:11:42,998 INFO L87 Difference]: Start difference. First operand 25188 states and 35732 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 15:11:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:11:46,403 INFO L93 Difference]: Finished difference Result 36616 states and 51782 transitions. [2022-12-13 15:11:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:11:46,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-12-13 15:11:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:11:46,415 INFO L225 Difference]: With dead ends: 36616 [2022-12-13 15:11:46,415 INFO L226 Difference]: Without dead ends: 13766 [2022-12-13 15:11:46,423 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 15:11:46,424 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 55 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3166 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 15:11:46,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3166 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:11:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13766 states. [2022-12-13 15:11:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13766 to 13764. [2022-12-13 15:11:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13764 states, 13762 states have (on average 1.4204330765877053) internal successors, (19548), 13763 states have internal predecessors, (19548), 0 states have call successors, (0), 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 15:11:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13764 states to 13764 states and 19548 transitions. [2022-12-13 15:11:49,378 INFO L78 Accepts]: Start accepts. Automaton has 13764 states and 19548 transitions. Word has length 111 [2022-12-13 15:11:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:49,378 INFO L495 AbstractCegarLoop]: Abstraction has 13764 states and 19548 transitions. [2022-12-13 15:11:49,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 15:11:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 13764 states and 19548 transitions. [2022-12-13 15:11:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 15:11:49,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:49,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:49,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 15:11:49,381 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:11:49,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1057117469, now seen corresponding path program 1 times [2022-12-13 15:11:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:49,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057190529] [2022-12-13 15:11:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:49,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:49,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:49,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057190529] [2022-12-13 15:11:49,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057190529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:49,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:49,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:11:49,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145450059] [2022-12-13 15:11:49,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:49,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:11:49,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:11:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:11:49,469 INFO L87 Difference]: Start difference. First operand 13764 states and 19548 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 15:11:50,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:11:50,933 INFO L93 Difference]: Finished difference Result 19480 states and 27506 transitions. [2022-12-13 15:11:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:11:50,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-12-13 15:11:50,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:11:50,940 INFO L225 Difference]: With dead ends: 19480 [2022-12-13 15:11:50,940 INFO L226 Difference]: Without dead ends: 8054 [2022-12-13 15:11:50,944 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 15:11:50,944 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 52 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3151 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 15:11:50,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3151 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:11:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2022-12-13 15:11:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 8052. [2022-12-13 15:11:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8052 states, 8050 states have (on average 1.4315527950310558) internal successors, (11524), 8051 states have internal predecessors, (11524), 0 states have call successors, (0), 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 15:11:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 11524 transitions. [2022-12-13 15:11:52,291 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 11524 transitions. Word has length 113 [2022-12-13 15:11:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:52,291 INFO L495 AbstractCegarLoop]: Abstraction has 8052 states and 11524 transitions. [2022-12-13 15:11:52,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 15:11:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 11524 transitions. [2022-12-13 15:11:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 15:11:52,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:52,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:52,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 15:11:52,292 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:11:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1472279215, now seen corresponding path program 1 times [2022-12-13 15:11:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:52,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643272121] [2022-12-13 15:11:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:52,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643272121] [2022-12-13 15:11:52,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643272121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:52,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:52,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:11:52,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808348783] [2022-12-13 15:11:52,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:52,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:11:52,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:11:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:11:52,348 INFO L87 Difference]: Start difference. First operand 8052 states and 11524 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 15:11:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:11:53,051 INFO L93 Difference]: Finished difference Result 10912 states and 15470 transitions. [2022-12-13 15:11:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:11:53,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-12-13 15:11:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:11:53,055 INFO L225 Difference]: With dead ends: 10912 [2022-12-13 15:11:53,055 INFO L226 Difference]: Without dead ends: 5198 [2022-12-13 15:11:53,058 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 15:11:53,058 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 49 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3136 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 15:11:53,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3136 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:11:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2022-12-13 15:11:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 5196. [2022-12-13 15:11:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5196 states, 5194 states have (on average 1.4528301886792452) internal successors, (7546), 5195 states have internal predecessors, (7546), 0 states have call successors, (0), 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 15:11:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 7546 transitions. [2022-12-13 15:11:53,762 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 7546 transitions. Word has length 115 [2022-12-13 15:11:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:53,762 INFO L495 AbstractCegarLoop]: Abstraction has 5196 states and 7546 transitions. [2022-12-13 15:11:53,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 15:11:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 7546 transitions. [2022-12-13 15:11:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 15:11:53,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:53,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 15:11:53,764 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:11:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash 65580737, now seen corresponding path program 1 times [2022-12-13 15:11:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:53,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952679590] [2022-12-13 15:11:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:53,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952679590] [2022-12-13 15:11:53,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952679590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:53,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:53,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:11:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870739057] [2022-12-13 15:11:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:11:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:11:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:11:53,819 INFO L87 Difference]: Start difference. First operand 5196 states and 7546 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 15:11:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:11:54,210 INFO L93 Difference]: Finished difference Result 6628 states and 9503 transitions. [2022-12-13 15:11:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:11:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-12-13 15:11:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:11:54,214 INFO L225 Difference]: With dead ends: 6628 [2022-12-13 15:11:54,214 INFO L226 Difference]: Without dead ends: 3770 [2022-12-13 15:11:54,215 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 15:11:54,216 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 46 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3121 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 15:11:54,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3121 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:11:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2022-12-13 15:11:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3768. [2022-12-13 15:11:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3766 states have (on average 1.4800849707912904) internal successors, (5574), 3767 states have internal predecessors, (5574), 0 states have call successors, (0), 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 15:11:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5574 transitions. [2022-12-13 15:11:54,572 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5574 transitions. Word has length 117 [2022-12-13 15:11:54,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:54,573 INFO L495 AbstractCegarLoop]: Abstraction has 3768 states and 5574 transitions. [2022-12-13 15:11:54,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 15:11:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5574 transitions. [2022-12-13 15:11:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 15:11:54,573 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:54,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:54,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 15:11:54,574 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:11:54,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash -788666029, now seen corresponding path program 1 times [2022-12-13 15:11:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:54,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943699415] [2022-12-13 15:11:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:55,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943699415] [2022-12-13 15:11:55,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943699415] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:11:55,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957970497] [2022-12-13 15:11:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:55,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:11:55,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:11:55,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:11:55,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:11:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:55,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:11:55,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:11:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:11:55,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:11:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:11:55,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957970497] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:11:55,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:11:55,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2022-12-13 15:11:55,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125068087] [2022-12-13 15:11:55,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:11:55,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:11:55,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:55,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:11:55,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:11:55,931 INFO L87 Difference]: Start difference. First operand 3768 states and 5574 transitions. Second operand has 17 states, 17 states have (on average 20.0) internal successors, (340), 17 states have internal predecessors, (340), 0 states have call successors, (0), 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 15:12:06,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:12:06,588 INFO L93 Difference]: Finished difference Result 19751 states and 26647 transitions. [2022-12-13 15:12:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-13 15:12:06,588 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.0) internal successors, (340), 17 states have internal predecessors, (340), 0 states have call successors, (0), 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 119 [2022-12-13 15:12:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:12:06,601 INFO L225 Difference]: With dead ends: 19751 [2022-12-13 15:12:06,601 INFO L226 Difference]: Without dead ends: 18321 [2022-12-13 15:12:06,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1960 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1072, Invalid=4934, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 15:12:06,605 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 22266 mSDsluCounter, 3865 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22266 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:12:06,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22266 Valid, 5435 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 15:12:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18321 states. [2022-12-13 15:12:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18321 to 13535. [2022-12-13 15:12:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13535 states, 13533 states have (on average 1.3559447277026528) internal successors, (18350), 13534 states have internal predecessors, (18350), 0 states have call successors, (0), 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 15:12:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 18350 transitions. [2022-12-13 15:12:09,892 INFO L78 Accepts]: Start accepts. Automaton has 13535 states and 18350 transitions. Word has length 119 [2022-12-13 15:12:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:12:09,893 INFO L495 AbstractCegarLoop]: Abstraction has 13535 states and 18350 transitions. [2022-12-13 15:12:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.0) internal successors, (340), 17 states have internal predecessors, (340), 0 states have call successors, (0), 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 15:12:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states and 18350 transitions. [2022-12-13 15:12:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 15:12:09,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:12:09,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:09,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:12:10,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 15:12:10,096 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:12:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:10,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1664017124, now seen corresponding path program 1 times [2022-12-13 15:12:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:10,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509154727] [2022-12-13 15:12:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:10,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:10,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509154727] [2022-12-13 15:12:10,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509154727] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:12:10,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542367389] [2022-12-13 15:12:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:10,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:10,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:10,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:12:10,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:12:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:10,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 15:12:10,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:12:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:11,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:12:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:12,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542367389] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:12:12,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:12:12,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2022-12-13 15:12:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069303890] [2022-12-13 15:12:12,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:12:12,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 15:12:12,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 15:12:12,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 15:12:12,622 INFO L87 Difference]: Start difference. First operand 13535 states and 18350 transitions. Second operand has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 0 states have call successors, (0), 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 15:12:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:12:29,139 INFO L93 Difference]: Finished difference Result 51622 states and 67339 transitions. [2022-12-13 15:12:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-13 15:12:29,139 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 0 states have call successors, (0), 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 120 [2022-12-13 15:12:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:12:29,173 INFO L225 Difference]: With dead ends: 51622 [2022-12-13 15:12:29,173 INFO L226 Difference]: Without dead ends: 40709 [2022-12-13 15:12:29,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3133 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1883, Invalid=8217, Unknown=0, NotChecked=0, Total=10100 [2022-12-13 15:12:29,203 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 18381 mSDsluCounter, 10875 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18381 SdHoareTripleChecker+Valid, 12492 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:12:29,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18381 Valid, 12492 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:12:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40709 states. [2022-12-13 15:12:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40709 to 23052. [2022-12-13 15:12:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23052 states, 23050 states have (on average 1.3179609544468547) internal successors, (30379), 23051 states have internal predecessors, (30379), 0 states have call successors, (0), 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 15:12:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23052 states to 23052 states and 30379 transitions. [2022-12-13 15:12:35,976 INFO L78 Accepts]: Start accepts. Automaton has 23052 states and 30379 transitions. Word has length 120 [2022-12-13 15:12:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:12:35,976 INFO L495 AbstractCegarLoop]: Abstraction has 23052 states and 30379 transitions. [2022-12-13 15:12:35,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 0 states have call successors, (0), 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 15:12:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 23052 states and 30379 transitions. [2022-12-13 15:12:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 15:12:35,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:12:35,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:35,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:12:36,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:36,179 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:12:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash -525912434, now seen corresponding path program 1 times [2022-12-13 15:12:36,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:36,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950706437] [2022-12-13 15:12:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:36,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:36,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950706437] [2022-12-13 15:12:36,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950706437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:12:36,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652032560] [2022-12-13 15:12:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:36,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:36,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:36,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:12:36,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:12:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:36,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:12:36,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:12:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:37,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:12:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:38,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652032560] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:12:38,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:12:38,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-12-13 15:12:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756599952] [2022-12-13 15:12:38,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:12:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:12:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:12:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-12-13 15:12:38,195 INFO L87 Difference]: Start difference. First operand 23052 states and 30379 transitions. Second operand has 21 states, 21 states have (on average 13.714285714285714) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 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 15:12:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:12:48,467 INFO L93 Difference]: Finished difference Result 40983 states and 52806 transitions. [2022-12-13 15:12:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:12:48,468 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.714285714285714) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 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 120 [2022-12-13 15:12:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:12:48,494 INFO L225 Difference]: With dead ends: 40983 [2022-12-13 15:12:48,494 INFO L226 Difference]: Without dead ends: 28284 [2022-12-13 15:12:48,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2022-12-13 15:12:48,501 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 12994 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12994 SdHoareTripleChecker+Valid, 6611 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:12:48,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12994 Valid, 6611 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 15:12:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28284 states. [2022-12-13 15:12:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28284 to 21128. [2022-12-13 15:12:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21128 states, 21126 states have (on average 1.3036069298494746) internal successors, (27540), 21127 states have internal predecessors, (27540), 0 states have call successors, (0), 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 15:12:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21128 states to 21128 states and 27540 transitions. [2022-12-13 15:12:55,219 INFO L78 Accepts]: Start accepts. Automaton has 21128 states and 27540 transitions. Word has length 120 [2022-12-13 15:12:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:12:55,219 INFO L495 AbstractCegarLoop]: Abstraction has 21128 states and 27540 transitions. [2022-12-13 15:12:55,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.714285714285714) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 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 15:12:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 21128 states and 27540 transitions. [2022-12-13 15:12:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 15:12:55,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:12:55,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:55,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:12:55,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:55,421 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:12:55,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1679714446, now seen corresponding path program 1 times [2022-12-13 15:12:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:55,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9504816] [2022-12-13 15:12:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:56,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:56,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9504816] [2022-12-13 15:12:56,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9504816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:12:56,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965606242] [2022-12-13 15:12:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:56,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:56,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:56,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:12:56,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:12:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:56,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:12:56,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:12:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:57,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:12:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:58,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965606242] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:12:58,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:12:58,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2022-12-13 15:12:58,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873855400] [2022-12-13 15:12:58,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:12:58,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 15:12:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 15:12:58,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-12-13 15:12:58,148 INFO L87 Difference]: Start difference. First operand 21128 states and 27540 transitions. Second operand has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 26 states have internal predecessors, (308), 0 states have call successors, (0), 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 15:13:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:13:20,377 INFO L93 Difference]: Finished difference Result 74258 states and 94918 transitions. [2022-12-13 15:13:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:13:20,378 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 26 states have internal predecessors, (308), 0 states have call successors, (0), 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 120 [2022-12-13 15:13:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:13:20,437 INFO L225 Difference]: With dead ends: 74258 [2022-12-13 15:13:20,437 INFO L226 Difference]: Without dead ends: 56182 [2022-12-13 15:13:20,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=353, Invalid=1207, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 15:13:20,453 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 16002 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16002 SdHoareTripleChecker+Valid, 6868 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:13:20,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16002 Valid, 6868 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 15:13:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56182 states. [2022-12-13 15:13:35,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56182 to 40088. [2022-12-13 15:13:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40088 states, 40086 states have (on average 1.2775033677593175) internal successors, (51210), 40087 states have internal predecessors, (51210), 0 states have call successors, (0), 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 15:13:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40088 states to 40088 states and 51210 transitions. [2022-12-13 15:13:35,484 INFO L78 Accepts]: Start accepts. Automaton has 40088 states and 51210 transitions. Word has length 120 [2022-12-13 15:13:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:13:35,485 INFO L495 AbstractCegarLoop]: Abstraction has 40088 states and 51210 transitions. [2022-12-13 15:13:35,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 26 states have internal predecessors, (308), 0 states have call successors, (0), 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 15:13:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 40088 states and 51210 transitions. [2022-12-13 15:13:35,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 15:13:35,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:13:35,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:35,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:13:35,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:13:35,688 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:13:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:13:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash -845344351, now seen corresponding path program 1 times [2022-12-13 15:13:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:13:35,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68121447] [2022-12-13 15:13:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:13:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:13:35,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:13:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68121447] [2022-12-13 15:13:35,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68121447] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:13:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149766073] [2022-12-13 15:13:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:35,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:13:35,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:13:35,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:13:35,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:13:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:36,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 15:13:36,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:13:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:13:36,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:13:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:13:37,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149766073] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:13:37,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:13:37,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2022-12-13 15:13:37,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032463925] [2022-12-13 15:13:37,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:13:37,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 15:13:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:13:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 15:13:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-12-13 15:13:37,668 INFO L87 Difference]: Start difference. First operand 40088 states and 51210 transitions. Second operand has 31 states, 31 states have (on average 10.03225806451613) internal successors, (311), 31 states have internal predecessors, (311), 0 states have call successors, (0), 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 15:14:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:14:53,649 INFO L93 Difference]: Finished difference Result 212870 states and 273925 transitions. [2022-12-13 15:14:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 15:14:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.03225806451613) internal successors, (311), 31 states have internal predecessors, (311), 0 states have call successors, (0), 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 121 [2022-12-13 15:14:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:14:53,854 INFO L225 Difference]: With dead ends: 212870 [2022-12-13 15:14:53,854 INFO L226 Difference]: Without dead ends: 175518 [2022-12-13 15:14:53,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1146, Invalid=5016, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 15:14:53,900 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 24367 mSDsluCounter, 11027 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24367 SdHoareTripleChecker+Valid, 12638 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:14:53,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24367 Valid, 12638 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:14:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175518 states. [2022-12-13 15:15:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175518 to 90750. [2022-12-13 15:15:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90750 states, 90748 states have (on average 1.2578128443602064) internal successors, (114144), 90749 states have internal predecessors, (114144), 0 states have call successors, (0), 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 15:15:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90750 states to 90750 states and 114144 transitions. [2022-12-13 15:15:32,632 INFO L78 Accepts]: Start accepts. Automaton has 90750 states and 114144 transitions. Word has length 121 [2022-12-13 15:15:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:15:32,632 INFO L495 AbstractCegarLoop]: Abstraction has 90750 states and 114144 transitions. [2022-12-13 15:15:32,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.03225806451613) internal successors, (311), 31 states have internal predecessors, (311), 0 states have call successors, (0), 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 15:15:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 90750 states and 114144 transitions. [2022-12-13 15:15:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 15:15:32,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:15:32,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:32,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:15:32,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:15:32,837 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:15:32,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -775860235, now seen corresponding path program 1 times [2022-12-13 15:15:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:32,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506557593] [2022-12-13 15:15:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506557593] [2022-12-13 15:15:33,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506557593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:15:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56222299] [2022-12-13 15:15:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:33,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:15:33,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:15:33,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:15:33,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_405d63cd-cd13-4557-99a1-2a39723f3146/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:15:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:33,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:15:33,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:15:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:34,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:15:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:35,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56222299] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:15:35,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:15:35,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-12-13 15:15:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622181661] [2022-12-13 15:15:35,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:15:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 15:15:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 15:15:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-12-13 15:15:35,799 INFO L87 Difference]: Start difference. First operand 90750 states and 114144 transitions. Second operand has 32 states, 32 states have (on average 11.03125) internal successors, (353), 32 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)