./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/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_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/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_bfe30526-0b1b-4625-b841-ba28f2769b8f/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 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 --- 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 18:04:36,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:04:36,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:04:36,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:04:36,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:04:36,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:04:36,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:04:36,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:04:36,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:04:36,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:04:36,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:04:36,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:04:36,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:04:36,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:04:36,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:04:36,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:04:36,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:04:36,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:04:36,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:04:36,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:04:36,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:04:36,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:04:36,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:04:36,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:04:36,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:04:36,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:04:36,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:04:36,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:04:36,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:04:36,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:04:36,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:04:36,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:04:36,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:04:36,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:04:36,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:04:36,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:04:36,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:04:36,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:04:36,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:04:36,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:04:36,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:04:36,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:04:36,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:04:36,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:04:36,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:04:36,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:04:36,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:04:36,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:04:36,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:04:36,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:04:36,953 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:04:36,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:04:36,953 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:04:36,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:04:36,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:04:36,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:04:36,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:04:36,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:04:36,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:04:36,955 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:04:36,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:04:36,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:04:36,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:04:36,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:04:36,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:04:36,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:04:36,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:04:36,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:04:36,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:04:36,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:04:36,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:04:36,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:04:36,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:04:36,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:04:36,958 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:04:36,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:04:36,958 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:04:36,958 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_bfe30526-0b1b-4625-b841-ba28f2769b8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 [2022-12-13 18:04:37,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:04:37,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:04:37,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:04:37,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:04:37,175 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:04:37,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 18:04:39,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:04:39,931 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:04:39,932 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 18:04:39,941 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/data/d91a8f4c1/87e8905cc79947dabddbe0c821e25f3f/FLAGb4fd005cf [2022-12-13 18:04:39,951 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/data/d91a8f4c1/87e8905cc79947dabddbe0c821e25f3f [2022-12-13 18:04:39,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:04:39,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:04:39,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:04:39,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:04:39,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:04:39,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:04:39" (1/1) ... [2022-12-13 18:04:39,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e41f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:39, skipping insertion in model container [2022-12-13 18:04:39,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:04:39" (1/1) ... [2022-12-13 18:04:39,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:04:39,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:04:40,159 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_bfe30526-0b1b-4625-b841-ba28f2769b8f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-12-13 18:04:40,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:04:40,201 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:04:40,245 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_bfe30526-0b1b-4625-b841-ba28f2769b8f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-12-13 18:04:40,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:04:40,278 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:04:40,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40 WrapperNode [2022-12-13 18:04:40,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:04:40,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:04:40,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:04:40,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:04:40,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,315 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 595 [2022-12-13 18:04:40,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:04:40,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:04:40,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:04:40,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:04:40,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:04:40,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:04:40,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:04:40,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:04:40,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:04:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:40,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:04:40,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:04:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:04:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:04:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:04:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:04:40,481 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:04:40,482 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:04:40,904 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:04:40,913 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:04:40,913 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:04:40,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:04:40 BoogieIcfgContainer [2022-12-13 18:04:40,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:04:40,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:04:40,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:04:40,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:04:40,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:04:39" (1/3) ... [2022-12-13 18:04:40,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431aeaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:04:40, skipping insertion in model container [2022-12-13 18:04:40,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40" (2/3) ... [2022-12-13 18:04:40,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431aeaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:04:40, skipping insertion in model container [2022-12-13 18:04:40,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:04:40" (3/3) ... [2022-12-13 18:04:40,926 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 18:04:40,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:04:40,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:04:40,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:04:40,991 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;@54fdfadf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:04:40,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:04:40,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 18:04:41,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:41,001 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] [2022-12-13 18:04:41,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash 293786216, now seen corresponding path program 1 times [2022-12-13 18:04:41,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539790306] [2022-12-13 18:04:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:41,397 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 18:04:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:41,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539790306] [2022-12-13 18:04:41,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539790306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:41,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:41,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:04:41,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376738143] [2022-12-13 18:04:41,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:41,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:41,435 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:41,617 INFO L93 Difference]: Finished difference Result 516 states and 834 transitions. [2022-12-13 18:04:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:41,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-12-13 18:04:41,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:41,631 INFO L225 Difference]: With dead ends: 516 [2022-12-13 18:04:41,631 INFO L226 Difference]: Without dead ends: 437 [2022-12-13 18:04:41,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:41,637 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 908 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:41,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1286 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:04:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-12-13 18:04:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 255. [2022-12-13 18:04:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.515748031496063) internal successors, (385), 254 states have internal predecessors, (385), 0 states have call successors, (0), 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 18:04:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2022-12-13 18:04:41,697 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 49 [2022-12-13 18:04:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:41,697 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2022-12-13 18:04:41,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2022-12-13 18:04:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 18:04:41,699 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:41,699 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] [2022-12-13 18:04:41,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:04:41,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1697275801, now seen corresponding path program 1 times [2022-12-13 18:04:41,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:41,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251037988] [2022-12-13 18:04:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:41,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:41,756 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 18:04:41,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:41,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251037988] [2022-12-13 18:04:41,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251037988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:41,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:41,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:04:41,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148361663] [2022-12-13 18:04:41,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:41,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:04:41,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:41,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:04:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:04:41,758 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:41,819 INFO L93 Difference]: Finished difference Result 627 states and 965 transitions. [2022-12-13 18:04:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:04:41,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-13 18:04:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:41,821 INFO L225 Difference]: With dead ends: 627 [2022-12-13 18:04:41,821 INFO L226 Difference]: Without dead ends: 429 [2022-12-13 18:04:41,822 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 18:04:41,823 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:41,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 422 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:04:41,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-12-13 18:04:41,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2022-12-13 18:04:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.5046948356807512) internal successors, (641), 426 states have internal predecessors, (641), 0 states have call successors, (0), 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 18:04:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 641 transitions. [2022-12-13 18:04:41,852 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 641 transitions. Word has length 52 [2022-12-13 18:04:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:41,853 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 641 transitions. [2022-12-13 18:04:41,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 641 transitions. [2022-12-13 18:04:41,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 18:04:41,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:41,854 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] [2022-12-13 18:04:41,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:04:41,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash -195371450, now seen corresponding path program 1 times [2022-12-13 18:04:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712014274] [2022-12-13 18:04:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:41,901 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 18:04:41,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:41,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712014274] [2022-12-13 18:04:41,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712014274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:41,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:41,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:04:41,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976449791] [2022-12-13 18:04:41,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:41,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:04:41,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:41,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:04:41,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:04:41,902 INFO L87 Difference]: Start difference. First operand 427 states and 641 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:41,973 INFO L93 Difference]: Finished difference Result 1077 states and 1638 transitions. [2022-12-13 18:04:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:04:41,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-13 18:04:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:41,975 INFO L225 Difference]: With dead ends: 1077 [2022-12-13 18:04:41,975 INFO L226 Difference]: Without dead ends: 749 [2022-12-13 18:04:41,976 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 18:04:41,977 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:41,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:04:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-12-13 18:04:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 747. [2022-12-13 18:04:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.4946380697050938) internal successors, (1115), 746 states have internal predecessors, (1115), 0 states have call successors, (0), 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 18:04:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1115 transitions. [2022-12-13 18:04:42,018 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1115 transitions. Word has length 52 [2022-12-13 18:04:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:42,018 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1115 transitions. [2022-12-13 18:04:42,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1115 transitions. [2022-12-13 18:04:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 18:04:42,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:42,020 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] [2022-12-13 18:04:42,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:04:42,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1046972601, now seen corresponding path program 1 times [2022-12-13 18:04:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:42,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402858315] [2022-12-13 18:04:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:42,061 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 18:04:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:42,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402858315] [2022-12-13 18:04:42,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402858315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:42,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:42,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:04:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800658365] [2022-12-13 18:04:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:04:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:04:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:04:42,062 INFO L87 Difference]: Start difference. First operand 747 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:42,185 INFO L93 Difference]: Finished difference Result 1857 states and 2792 transitions. [2022-12-13 18:04:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:04:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-13 18:04:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:42,190 INFO L225 Difference]: With dead ends: 1857 [2022-12-13 18:04:42,190 INFO L226 Difference]: Without dead ends: 1293 [2022-12-13 18:04:42,191 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 18:04:42,193 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:42,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:04:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-12-13 18:04:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1291. [2022-12-13 18:04:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 1.4751937984496124) internal successors, (1903), 1290 states have internal predecessors, (1903), 0 states have call successors, (0), 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 18:04:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1903 transitions. [2022-12-13 18:04:42,318 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1903 transitions. Word has length 52 [2022-12-13 18:04:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:42,319 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1903 transitions. [2022-12-13 18:04:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1903 transitions. [2022-12-13 18:04:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 18:04:42,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:42,321 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] [2022-12-13 18:04:42,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:04:42,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1633425885, now seen corresponding path program 1 times [2022-12-13 18:04:42,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:42,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837412727] [2022-12-13 18:04:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:42,439 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 18:04:42,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:42,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837412727] [2022-12-13 18:04:42,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837412727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:42,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:42,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:04:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660896803] [2022-12-13 18:04:42,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:42,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:42,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:42,442 INFO L87 Difference]: Start difference. First operand 1291 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:42,656 INFO L93 Difference]: Finished difference Result 2511 states and 3768 transitions. [2022-12-13 18:04:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:42,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-13 18:04:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:42,664 INFO L225 Difference]: With dead ends: 2511 [2022-12-13 18:04:42,664 INFO L226 Difference]: Without dead ends: 2145 [2022-12-13 18:04:42,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:42,666 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 639 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:42,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1142 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:04:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2022-12-13 18:04:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1740. [2022-12-13 18:04:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1739 states have (on average 1.4836112708453133) internal successors, (2580), 1739 states have internal predecessors, (2580), 0 states have call successors, (0), 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 18:04:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2580 transitions. [2022-12-13 18:04:42,780 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2580 transitions. Word has length 53 [2022-12-13 18:04:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:42,781 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2580 transitions. [2022-12-13 18:04:42,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2580 transitions. [2022-12-13 18:04:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 18:04:42,782 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:42,782 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] [2022-12-13 18:04:42,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:04:42,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1286312845, now seen corresponding path program 1 times [2022-12-13 18:04:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420961148] [2022-12-13 18:04:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:42,866 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 18:04:42,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:42,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420961148] [2022-12-13 18:04:42,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420961148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:42,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:42,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:04:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909695826] [2022-12-13 18:04:42,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:42,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:42,868 INFO L87 Difference]: Start difference. First operand 1740 states and 2580 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:43,076 INFO L93 Difference]: Finished difference Result 2960 states and 4445 transitions. [2022-12-13 18:04:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-13 18:04:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:43,085 INFO L225 Difference]: With dead ends: 2960 [2022-12-13 18:04:43,086 INFO L226 Difference]: Without dead ends: 2594 [2022-12-13 18:04:43,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:43,087 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 631 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:43,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 997 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:04:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-12-13 18:04:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2085. [2022-12-13 18:04:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2084 states have (on average 1.4889635316698657) internal successors, (3103), 2084 states have internal predecessors, (3103), 0 states have call successors, (0), 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 18:04:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3103 transitions. [2022-12-13 18:04:43,255 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3103 transitions. Word has length 53 [2022-12-13 18:04:43,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:43,255 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3103 transitions. [2022-12-13 18:04:43,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:43,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3103 transitions. [2022-12-13 18:04:43,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 18:04:43,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:43,257 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] [2022-12-13 18:04:43,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:04:43,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:43,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1015763425, now seen corresponding path program 1 times [2022-12-13 18:04:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:43,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175442282] [2022-12-13 18:04:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:43,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:43,356 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 18:04:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:43,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175442282] [2022-12-13 18:04:43,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175442282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:43,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:43,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:04:43,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755806227] [2022-12-13 18:04:43,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:43,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:43,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:43,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:43,358 INFO L87 Difference]: Start difference. First operand 2085 states and 3103 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:43,626 INFO L93 Difference]: Finished difference Result 3359 states and 5045 transitions. [2022-12-13 18:04:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-13 18:04:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:43,635 INFO L225 Difference]: With dead ends: 3359 [2022-12-13 18:04:43,636 INFO L226 Difference]: Without dead ends: 2993 [2022-12-13 18:04:43,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:43,638 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 635 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:43,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1068 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:04:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-12-13 18:04:43,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2375. [2022-12-13 18:04:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2374 states have (on average 1.4928390901432183) internal successors, (3544), 2374 states have internal predecessors, (3544), 0 states have call successors, (0), 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 18:04:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3544 transitions. [2022-12-13 18:04:43,764 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3544 transitions. Word has length 53 [2022-12-13 18:04:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:43,764 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3544 transitions. [2022-12-13 18:04:43,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3544 transitions. [2022-12-13 18:04:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 18:04:43,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:43,765 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] [2022-12-13 18:04:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:04:43,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1968890954, now seen corresponding path program 1 times [2022-12-13 18:04:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:43,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376819743] [2022-12-13 18:04:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:43,834 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 18:04:43,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:43,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376819743] [2022-12-13 18:04:43,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376819743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:43,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:43,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:04:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243890384] [2022-12-13 18:04:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:43,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:43,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:43,836 INFO L87 Difference]: Start difference. First operand 2375 states and 3544 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:44,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:44,353 INFO L93 Difference]: Finished difference Result 6743 states and 10099 transitions. [2022-12-13 18:04:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:44,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-12-13 18:04:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:44,367 INFO L225 Difference]: With dead ends: 6743 [2022-12-13 18:04:44,368 INFO L226 Difference]: Without dead ends: 4395 [2022-12-13 18:04:44,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:44,371 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 947 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:44,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 220 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:04:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2022-12-13 18:04:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 4368. [2022-12-13 18:04:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 1.4868330661781544) internal successors, (6493), 4367 states have internal predecessors, (6493), 0 states have call successors, (0), 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 18:04:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 6493 transitions. [2022-12-13 18:04:44,625 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 6493 transitions. Word has length 57 [2022-12-13 18:04:44,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:44,625 INFO L495 AbstractCegarLoop]: Abstraction has 4368 states and 6493 transitions. [2022-12-13 18:04:44,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 6493 transitions. [2022-12-13 18:04:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 18:04:44,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:44,627 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] [2022-12-13 18:04:44,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:04:44,627 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:44,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:44,628 INFO L85 PathProgramCache]: Analyzing trace with hash -108107112, now seen corresponding path program 1 times [2022-12-13 18:04:44,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:44,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676080628] [2022-12-13 18:04:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:44,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:44,704 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 18:04:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:44,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676080628] [2022-12-13 18:04:44,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676080628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:44,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:44,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:04:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902106111] [2022-12-13 18:04:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:44,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:44,706 INFO L87 Difference]: Start difference. First operand 4368 states and 6493 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:45,289 INFO L93 Difference]: Finished difference Result 10465 states and 15544 transitions. [2022-12-13 18:04:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-12-13 18:04:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:45,300 INFO L225 Difference]: With dead ends: 10465 [2022-12-13 18:04:45,300 INFO L226 Difference]: Without dead ends: 6142 [2022-12-13 18:04:45,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:45,304 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 898 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:45,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 230 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:04:45,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2022-12-13 18:04:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6108. [2022-12-13 18:04:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6108 states, 6107 states have (on average 1.4735549369575895) internal successors, (8999), 6107 states have internal predecessors, (8999), 0 states have call successors, (0), 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 18:04:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6108 states to 6108 states and 8999 transitions. [2022-12-13 18:04:45,690 INFO L78 Accepts]: Start accepts. Automaton has 6108 states and 8999 transitions. Word has length 57 [2022-12-13 18:04:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:45,690 INFO L495 AbstractCegarLoop]: Abstraction has 6108 states and 8999 transitions. [2022-12-13 18:04:45,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6108 states and 8999 transitions. [2022-12-13 18:04:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 18:04:45,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:45,692 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] [2022-12-13 18:04:45,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:04:45,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash 871846780, now seen corresponding path program 1 times [2022-12-13 18:04:45,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:45,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558640636] [2022-12-13 18:04:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:45,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:45,757 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 18:04:45,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:45,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558640636] [2022-12-13 18:04:45,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558640636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:45,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:45,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:04:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700456907] [2022-12-13 18:04:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:45,759 INFO L87 Difference]: Start difference. First operand 6108 states and 8999 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:04:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:46,502 INFO L93 Difference]: Finished difference Result 14561 states and 21424 transitions. [2022-12-13 18:04:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:46,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 18:04:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:46,518 INFO L225 Difference]: With dead ends: 14561 [2022-12-13 18:04:46,518 INFO L226 Difference]: Without dead ends: 8534 [2022-12-13 18:04:46,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:46,523 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 853 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:46,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 232 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:04:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2022-12-13 18:04:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 8486. [2022-12-13 18:04:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8485 states have (on average 1.4579846788450206) internal successors, (12371), 8485 states have internal predecessors, (12371), 0 states have call successors, (0), 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 18:04:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 12371 transitions. [2022-12-13 18:04:47,150 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 12371 transitions. Word has length 58 [2022-12-13 18:04:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:47,150 INFO L495 AbstractCegarLoop]: Abstraction has 8486 states and 12371 transitions. [2022-12-13 18:04:47,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:04:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 12371 transitions. [2022-12-13 18:04:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 18:04:47,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:47,153 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] [2022-12-13 18:04:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:04:47,153 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:47,153 INFO L85 PathProgramCache]: Analyzing trace with hash 536362735, now seen corresponding path program 1 times [2022-12-13 18:04:47,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:47,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65407887] [2022-12-13 18:04:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:47,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:47,246 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 18:04:47,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:47,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65407887] [2022-12-13 18:04:47,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65407887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:47,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:47,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:04:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794986558] [2022-12-13 18:04:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:47,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:04:47,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:04:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:47,248 INFO L87 Difference]: Start difference. First operand 8486 states and 12371 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:49,993 INFO L93 Difference]: Finished difference Result 33048 states and 47772 transitions. [2022-12-13 18:04:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:04:49,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-13 18:04:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:50,034 INFO L225 Difference]: With dead ends: 33048 [2022-12-13 18:04:50,034 INFO L226 Difference]: Without dead ends: 28718 [2022-12-13 18:04:50,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:04:50,042 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2110 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:50,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 349 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:04:50,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28718 states. [2022-12-13 18:04:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28718 to 8506. [2022-12-13 18:04:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8506 states, 8505 states have (on average 1.4573780129335685) internal successors, (12395), 8505 states have internal predecessors, (12395), 0 states have call successors, (0), 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 18:04:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8506 states to 8506 states and 12395 transitions. [2022-12-13 18:04:51,118 INFO L78 Accepts]: Start accepts. Automaton has 8506 states and 12395 transitions. Word has length 59 [2022-12-13 18:04:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:51,118 INFO L495 AbstractCegarLoop]: Abstraction has 8506 states and 12395 transitions. [2022-12-13 18:04:51,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8506 states and 12395 transitions. [2022-12-13 18:04:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 18:04:51,123 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:51,123 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] [2022-12-13 18:04:51,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:04:51,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:51,124 INFO L85 PathProgramCache]: Analyzing trace with hash -426804272, now seen corresponding path program 1 times [2022-12-13 18:04:51,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:51,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63223990] [2022-12-13 18:04:51,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:51,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:51,218 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 18:04:51,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:51,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63223990] [2022-12-13 18:04:51,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63223990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:51,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:51,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:04:51,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121028931] [2022-12-13 18:04:51,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:51,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:04:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:51,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:04:51,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:51,220 INFO L87 Difference]: Start difference. First operand 8506 states and 12395 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:55,636 INFO L93 Difference]: Finished difference Result 39153 states and 56569 transitions. [2022-12-13 18:04:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:04:55,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-13 18:04:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:55,697 INFO L225 Difference]: With dead ends: 39153 [2022-12-13 18:04:55,698 INFO L226 Difference]: Without dead ends: 34911 [2022-12-13 18:04:55,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:04:55,708 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2401 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:55,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 395 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:04:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34911 states. [2022-12-13 18:04:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34911 to 8616. [2022-12-13 18:04:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8616 states, 8615 states have (on average 1.4552524666279745) internal successors, (12537), 8615 states have internal predecessors, (12537), 0 states have call successors, (0), 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 18:04:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 12537 transitions. [2022-12-13 18:04:57,044 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 12537 transitions. Word has length 59 [2022-12-13 18:04:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:57,044 INFO L495 AbstractCegarLoop]: Abstraction has 8616 states and 12537 transitions. [2022-12-13 18:04:57,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 12537 transitions. [2022-12-13 18:04:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 18:04:57,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:57,047 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] [2022-12-13 18:04:57,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:04:57,047 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -974429839, now seen corresponding path program 1 times [2022-12-13 18:04:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:57,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234345678] [2022-12-13 18:04:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:57,117 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 18:04:57,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:57,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234345678] [2022-12-13 18:04:57,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234345678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:57,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:57,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:04:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713392758] [2022-12-13 18:04:57,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:57,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:04:57,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:04:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:57,119 INFO L87 Difference]: Start difference. First operand 8616 states and 12537 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:03,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:03,941 INFO L93 Difference]: Finished difference Result 45194 states and 65263 transitions. [2022-12-13 18:05:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:05:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-13 18:05:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:03,988 INFO L225 Difference]: With dead ends: 45194 [2022-12-13 18:05:03,989 INFO L226 Difference]: Without dead ends: 42096 [2022-12-13 18:05:03,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:05:03,997 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2764 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2764 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:03,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2764 Valid, 412 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:05:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42096 states. [2022-12-13 18:05:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42096 to 8672. [2022-12-13 18:05:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8672 states, 8671 states have (on average 1.4538115557605813) internal successors, (12606), 8671 states have internal predecessors, (12606), 0 states have call successors, (0), 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 18:05:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12606 transitions. [2022-12-13 18:05:05,492 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12606 transitions. Word has length 59 [2022-12-13 18:05:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:05,492 INFO L495 AbstractCegarLoop]: Abstraction has 8672 states and 12606 transitions. [2022-12-13 18:05:05,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12606 transitions. [2022-12-13 18:05:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 18:05:05,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:05,495 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] [2022-12-13 18:05:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:05:05,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:05,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1695106365, now seen corresponding path program 1 times [2022-12-13 18:05:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:05,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772845042] [2022-12-13 18:05:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:05,735 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 18:05:05,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:05,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772845042] [2022-12-13 18:05:05,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772845042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:05,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:05,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:05:05,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497419575] [2022-12-13 18:05:05,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:05,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:05:05,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:05:05,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:05:05,736 INFO L87 Difference]: Start difference. First operand 8672 states and 12606 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:05:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:11,668 INFO L93 Difference]: Finished difference Result 33360 states and 48326 transitions. [2022-12-13 18:05:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 18:05:11,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 18:05:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:11,696 INFO L225 Difference]: With dead ends: 33360 [2022-12-13 18:05:11,696 INFO L226 Difference]: Without dead ends: 26207 [2022-12-13 18:05:11,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:05:11,703 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2073 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:11,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 1575 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:05:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26207 states. [2022-12-13 18:05:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26207 to 8512. [2022-12-13 18:05:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8512 states, 8511 states have (on average 1.450945834802021) internal successors, (12349), 8511 states have internal predecessors, (12349), 0 states have call successors, (0), 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 18:05:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8512 states to 8512 states and 12349 transitions. [2022-12-13 18:05:13,392 INFO L78 Accepts]: Start accepts. Automaton has 8512 states and 12349 transitions. Word has length 61 [2022-12-13 18:05:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:13,392 INFO L495 AbstractCegarLoop]: Abstraction has 8512 states and 12349 transitions. [2022-12-13 18:05:13,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:05:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8512 states and 12349 transitions. [2022-12-13 18:05:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 18:05:13,394 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:13,394 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] [2022-12-13 18:05:13,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:05:13,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:13,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1748259780, now seen corresponding path program 1 times [2022-12-13 18:05:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:13,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752720062] [2022-12-13 18:05:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:13,665 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 18:05:13,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:13,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752720062] [2022-12-13 18:05:13,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752720062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:13,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:13,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:05:13,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629510491] [2022-12-13 18:05:13,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:13,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:05:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:05:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:05:13,666 INFO L87 Difference]: Start difference. First operand 8512 states and 12349 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:05:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:20,025 INFO L93 Difference]: Finished difference Result 28682 states and 41264 transitions. [2022-12-13 18:05:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 18:05:20,026 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 18:05:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:20,046 INFO L225 Difference]: With dead ends: 28682 [2022-12-13 18:05:20,046 INFO L226 Difference]: Without dead ends: 21400 [2022-12-13 18:05:20,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:05:20,053 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1968 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:20,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 1616 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:05:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21400 states. [2022-12-13 18:05:22,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21400 to 8231. [2022-12-13 18:05:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 8230 states have (on average 1.4487241798298907) internal successors, (11923), 8230 states have internal predecessors, (11923), 0 states have call successors, (0), 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 18:05:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 11923 transitions. [2022-12-13 18:05:22,023 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 11923 transitions. Word has length 61 [2022-12-13 18:05:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:22,024 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 11923 transitions. [2022-12-13 18:05:22,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:05:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 11923 transitions. [2022-12-13 18:05:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 18:05:22,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:22,025 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] [2022-12-13 18:05:22,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:05:22,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:22,026 INFO L85 PathProgramCache]: Analyzing trace with hash 11490693, now seen corresponding path program 1 times [2022-12-13 18:05:22,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:22,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309831713] [2022-12-13 18:05:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:22,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:22,217 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 18:05:22,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:22,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309831713] [2022-12-13 18:05:22,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309831713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:22,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:22,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:05:22,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185014537] [2022-12-13 18:05:22,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:22,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:05:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:22,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:05:22,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:05:22,219 INFO L87 Difference]: Start difference. First operand 8231 states and 11923 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:05:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:29,062 INFO L93 Difference]: Finished difference Result 28808 states and 41691 transitions. [2022-12-13 18:05:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 18:05:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 18:05:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:29,082 INFO L225 Difference]: With dead ends: 28808 [2022-12-13 18:05:29,082 INFO L226 Difference]: Without dead ends: 21732 [2022-12-13 18:05:29,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:05:29,089 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2173 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:29,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 1332 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:05:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21732 states. [2022-12-13 18:05:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21732 to 8082. [2022-12-13 18:05:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.4493255785175103) internal successors, (11712), 8081 states have internal predecessors, (11712), 0 states have call successors, (0), 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 18:05:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 11712 transitions. [2022-12-13 18:05:31,265 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 11712 transitions. Word has length 61 [2022-12-13 18:05:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:31,266 INFO L495 AbstractCegarLoop]: Abstraction has 8082 states and 11712 transitions. [2022-12-13 18:05:31,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:05:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 11712 transitions. [2022-12-13 18:05:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:05:31,267 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:31,267 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] [2022-12-13 18:05:31,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:05:31,267 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -746765663, now seen corresponding path program 1 times [2022-12-13 18:05:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700668902] [2022-12-13 18:05:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:31,296 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 18:05:31,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:31,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700668902] [2022-12-13 18:05:31,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700668902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:31,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:31,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:05:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730344204] [2022-12-13 18:05:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:05:31,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:05:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:05:31,298 INFO L87 Difference]: Start difference. First operand 8082 states and 11712 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:05:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:33,413 INFO L93 Difference]: Finished difference Result 11129 states and 16085 transitions. [2022-12-13 18:05:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:05:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 18:05:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:33,420 INFO L225 Difference]: With dead ends: 11129 [2022-12-13 18:05:33,420 INFO L226 Difference]: Without dead ends: 7899 [2022-12-13 18:05:33,422 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 18:05:33,422 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 152 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:33,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 528 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:05:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2022-12-13 18:05:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7897. [2022-12-13 18:05:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7897 states, 7896 states have (on average 1.4223657548125632) internal successors, (11231), 7896 states have internal predecessors, (11231), 0 states have call successors, (0), 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 18:05:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 11231 transitions. [2022-12-13 18:05:35,488 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 11231 transitions. Word has length 62 [2022-12-13 18:05:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:35,488 INFO L495 AbstractCegarLoop]: Abstraction has 7897 states and 11231 transitions. [2022-12-13 18:05:35,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:05:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 11231 transitions. [2022-12-13 18:05:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:05:35,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:35,489 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] [2022-12-13 18:05:35,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:05:35,490 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash -691619625, now seen corresponding path program 1 times [2022-12-13 18:05:35,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:35,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693607305] [2022-12-13 18:05:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:35,517 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 18:05:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:35,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693607305] [2022-12-13 18:05:35,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693607305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:35,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:35,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:05:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846110690] [2022-12-13 18:05:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:35,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:05:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:05:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:05:35,519 INFO L87 Difference]: Start difference. First operand 7897 states and 11231 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:05:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:37,652 INFO L93 Difference]: Finished difference Result 11306 states and 16076 transitions. [2022-12-13 18:05:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:05:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 18:05:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:37,658 INFO L225 Difference]: With dead ends: 11306 [2022-12-13 18:05:37,658 INFO L226 Difference]: Without dead ends: 7025 [2022-12-13 18:05:37,662 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 18:05:37,662 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 138 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:37,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 520 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:05:37,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2022-12-13 18:05:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2022-12-13 18:05:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7023 states, 7022 states have (on average 1.400598120193677) internal successors, (9835), 7022 states have internal predecessors, (9835), 0 states have call successors, (0), 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 18:05:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9835 transitions. [2022-12-13 18:05:39,670 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9835 transitions. Word has length 62 [2022-12-13 18:05:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:39,670 INFO L495 AbstractCegarLoop]: Abstraction has 7023 states and 9835 transitions. [2022-12-13 18:05:39,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:05:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9835 transitions. [2022-12-13 18:05:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:05:39,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:39,673 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] [2022-12-13 18:05:39,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:05:39,673 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:39,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1051063940, now seen corresponding path program 1 times [2022-12-13 18:05:39,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:39,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204344109] [2022-12-13 18:05:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:39,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:39,714 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 18:05:39,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:39,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204344109] [2022-12-13 18:05:39,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204344109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:39,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:39,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:05:39,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868873098] [2022-12-13 18:05:39,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:39,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:05:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:39,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:05:39,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:05:39,716 INFO L87 Difference]: Start difference. First operand 7023 states and 9835 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:05:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:41,282 INFO L93 Difference]: Finished difference Result 9402 states and 13165 transitions. [2022-12-13 18:05:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:05:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 18:05:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:41,287 INFO L225 Difference]: With dead ends: 9402 [2022-12-13 18:05:41,287 INFO L226 Difference]: Without dead ends: 5420 [2022-12-13 18:05:41,289 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 18:05:41,289 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 150 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:41,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 531 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:05:41,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2022-12-13 18:05:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 5418. [2022-12-13 18:05:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 1.3782536459294812) internal successors, (7466), 5417 states have internal predecessors, (7466), 0 states have call successors, (0), 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 18:05:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 7466 transitions. [2022-12-13 18:05:42,673 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 7466 transitions. Word has length 62 [2022-12-13 18:05:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:42,673 INFO L495 AbstractCegarLoop]: Abstraction has 5418 states and 7466 transitions. [2022-12-13 18:05:42,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:05:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 7466 transitions. [2022-12-13 18:05:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:05:42,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:42,675 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 18:05:42,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:05:42,675 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:42,675 INFO L85 PathProgramCache]: Analyzing trace with hash -751537894, now seen corresponding path program 1 times [2022-12-13 18:05:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:42,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659640077] [2022-12-13 18:05:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:42,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:42,705 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 18:05:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:42,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659640077] [2022-12-13 18:05:42,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659640077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:42,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:42,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:05:42,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469481053] [2022-12-13 18:05:42,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:42,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:05:42,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:05:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:05:42,706 INFO L87 Difference]: Start difference. First operand 5418 states and 7466 transitions. Second operand has 3 states, 3 states have (on average 21.0) 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 18:05:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:44,709 INFO L93 Difference]: Finished difference Result 10107 states and 14003 transitions. [2022-12-13 18:05:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:05:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) 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 18:05:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:44,716 INFO L225 Difference]: With dead ends: 10107 [2022-12-13 18:05:44,716 INFO L226 Difference]: Without dead ends: 7374 [2022-12-13 18:05:44,718 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 18:05:44,719 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 175 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:44,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 350 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:05:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7374 states. [2022-12-13 18:05:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7374 to 5197. [2022-12-13 18:05:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3775981524249423) internal successors, (7158), 5196 states have internal predecessors, (7158), 0 states have call successors, (0), 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 18:05:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7158 transitions. [2022-12-13 18:05:46,076 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7158 transitions. Word has length 63 [2022-12-13 18:05:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:46,076 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7158 transitions. [2022-12-13 18:05:46,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) 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 18:05:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7158 transitions. [2022-12-13 18:05:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:05:46,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:46,077 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 18:05:46,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 18:05:46,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:46,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:46,078 INFO L85 PathProgramCache]: Analyzing trace with hash 296287221, now seen corresponding path program 1 times [2022-12-13 18:05:46,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:46,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489144181] [2022-12-13 18:05:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:46,891 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 18:05:46,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:46,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489144181] [2022-12-13 18:05:46,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489144181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:46,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:46,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-13 18:05:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523198319] [2022-12-13 18:05:46,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:46,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 18:05:46,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:46,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 18:05:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:05:46,892 INFO L87 Difference]: Start difference. First operand 5197 states and 7158 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:05:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:54,231 INFO L93 Difference]: Finished difference Result 10147 states and 14063 transitions. [2022-12-13 18:05:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 18:05:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:05:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:54,239 INFO L225 Difference]: With dead ends: 10147 [2022-12-13 18:05:54,239 INFO L226 Difference]: Without dead ends: 10032 [2022-12-13 18:05:54,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=393, Invalid=1863, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 18:05:54,241 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2702 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 6182 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:54,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 6182 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 18:05:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2022-12-13 18:05:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 5197. [2022-12-13 18:05:55,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3774056966897614) internal successors, (7157), 5196 states have internal predecessors, (7157), 0 states have call successors, (0), 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 18:05:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7157 transitions. [2022-12-13 18:05:55,709 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7157 transitions. Word has length 63 [2022-12-13 18:05:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:55,709 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7157 transitions. [2022-12-13 18:05:55,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:05:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7157 transitions. [2022-12-13 18:05:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:05:55,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:05:55,711 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 18:05:55,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:05:55,711 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:05:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:05:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash -678356547, now seen corresponding path program 1 times [2022-12-13 18:05:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:05:55,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502750553] [2022-12-13 18:05:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:05:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:05:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:56,463 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 18:05:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:56,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502750553] [2022-12-13 18:05:56,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502750553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:56,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:56,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-13 18:05:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512263686] [2022-12-13 18:05:56,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:56,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 18:05:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 18:05:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:05:56,465 INFO L87 Difference]: Start difference. First operand 5197 states and 7157 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:06:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:03,421 INFO L93 Difference]: Finished difference Result 9021 states and 12491 transitions. [2022-12-13 18:06:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 18:06:03,422 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:06:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:03,428 INFO L225 Difference]: With dead ends: 9021 [2022-12-13 18:06:03,429 INFO L226 Difference]: Without dead ends: 8906 [2022-12-13 18:06:03,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 18:06:03,431 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1709 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 6966 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:03,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 6966 Invalid, 3898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 18:06:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2022-12-13 18:06:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 5197. [2022-12-13 18:06:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3772132409545805) internal successors, (7156), 5196 states have internal predecessors, (7156), 0 states have call successors, (0), 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 18:06:04,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7156 transitions. [2022-12-13 18:06:04,931 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7156 transitions. Word has length 63 [2022-12-13 18:06:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:04,931 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7156 transitions. [2022-12-13 18:06:04,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:06:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7156 transitions. [2022-12-13 18:06:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:06:04,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:04,933 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 18:06:04,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 18:06:04,933 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:04,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash 639398585, now seen corresponding path program 1 times [2022-12-13 18:06:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:04,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684709245] [2022-12-13 18:06:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:05,649 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 18:06:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:05,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684709245] [2022-12-13 18:06:05,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684709245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:05,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:05,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-13 18:06:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583770836] [2022-12-13 18:06:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 18:06:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 18:06:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:06:05,651 INFO L87 Difference]: Start difference. First operand 5197 states and 7156 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:06:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:12,200 INFO L93 Difference]: Finished difference Result 8720 states and 12045 transitions. [2022-12-13 18:06:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 18:06:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:06:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:12,207 INFO L225 Difference]: With dead ends: 8720 [2022-12-13 18:06:12,207 INFO L226 Difference]: Without dead ends: 8605 [2022-12-13 18:06:12,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 18:06:12,209 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2233 mSDsluCounter, 7324 mSDsCounter, 0 mSdLazyCounter, 4353 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:12,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 7834 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4353 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 18:06:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8605 states. [2022-12-13 18:06:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8605 to 5203. [2022-12-13 18:06:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.3769703960015378) internal successors, (7163), 5202 states have internal predecessors, (7163), 0 states have call successors, (0), 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 18:06:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7163 transitions. [2022-12-13 18:06:13,734 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7163 transitions. Word has length 63 [2022-12-13 18:06:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:13,734 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 7163 transitions. [2022-12-13 18:06:13,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 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 18:06:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7163 transitions. [2022-12-13 18:06:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:06:13,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:13,735 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 18:06:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 18:06:13,736 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash -422382988, now seen corresponding path program 1 times [2022-12-13 18:06:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:13,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060281387] [2022-12-13 18:06:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:13,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:13,755 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 18:06:13,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:13,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060281387] [2022-12-13 18:06:13,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060281387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:13,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:13,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620067577] [2022-12-13 18:06:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:06:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:06:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:06:13,756 INFO L87 Difference]: Start difference. First operand 5203 states and 7163 transitions. Second operand has 3 states, 3 states have (on average 21.0) 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 18:06:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:15,965 INFO L93 Difference]: Finished difference Result 9670 states and 13392 transitions. [2022-12-13 18:06:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:06:15,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) 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 18:06:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:15,971 INFO L225 Difference]: With dead ends: 9670 [2022-12-13 18:06:15,971 INFO L226 Difference]: Without dead ends: 7060 [2022-12-13 18:06:15,973 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 18:06:15,974 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 177 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:15,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 351 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:06:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7060 states. [2022-12-13 18:06:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7060 to 4934. [2022-12-13 18:06:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 1.3768497871477803) internal successors, (6792), 4933 states have internal predecessors, (6792), 0 states have call successors, (0), 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 18:06:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 6792 transitions. [2022-12-13 18:06:17,471 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 6792 transitions. Word has length 63 [2022-12-13 18:06:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:17,471 INFO L495 AbstractCegarLoop]: Abstraction has 4934 states and 6792 transitions. [2022-12-13 18:06:17,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) 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 18:06:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 6792 transitions. [2022-12-13 18:06:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:06:17,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:17,472 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 18:06:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 18:06:17,472 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash 393964366, now seen corresponding path program 1 times [2022-12-13 18:06:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:17,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949710611] [2022-12-13 18:06:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:17,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:17,502 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 18:06:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:17,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949710611] [2022-12-13 18:06:17,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949710611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:17,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:17,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316128830] [2022-12-13 18:06:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:17,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:06:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:06:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:06:17,503 INFO L87 Difference]: Start difference. First operand 4934 states and 6792 transitions. Second operand has 3 states, 3 states have (on average 21.0) 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 18:06:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:19,283 INFO L93 Difference]: Finished difference Result 7477 states and 10307 transitions. [2022-12-13 18:06:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:06:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) 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 18:06:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:19,288 INFO L225 Difference]: With dead ends: 7477 [2022-12-13 18:06:19,288 INFO L226 Difference]: Without dead ends: 5683 [2022-12-13 18:06:19,289 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 18:06:19,289 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 165 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:19,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 327 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:06:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5683 states. [2022-12-13 18:06:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5683 to 4717. [2022-12-13 18:06:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 4716 states have (on average 1.3770144189991518) internal successors, (6494), 4716 states have internal predecessors, (6494), 0 states have call successors, (0), 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 18:06:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6494 transitions. [2022-12-13 18:06:20,717 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6494 transitions. Word has length 63 [2022-12-13 18:06:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:20,717 INFO L495 AbstractCegarLoop]: Abstraction has 4717 states and 6494 transitions. [2022-12-13 18:06:20,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) 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 18:06:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6494 transitions. [2022-12-13 18:06:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 18:06:20,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:20,718 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] [2022-12-13 18:06:20,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:06:20,718 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:20,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1222962444, now seen corresponding path program 1 times [2022-12-13 18:06:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:20,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91286075] [2022-12-13 18:06:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:20,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:21,087 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 18:06:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:21,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91286075] [2022-12-13 18:06:21,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91286075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:21,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:21,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:06:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37072711] [2022-12-13 18:06:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:21,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:06:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:06:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:06:21,089 INFO L87 Difference]: Start difference. First operand 4717 states and 6494 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:06:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:25,121 INFO L93 Difference]: Finished difference Result 9198 states and 12735 transitions. [2022-12-13 18:06:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:06:25,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-13 18:06:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:25,129 INFO L225 Difference]: With dead ends: 9198 [2022-12-13 18:06:25,129 INFO L226 Difference]: Without dead ends: 8524 [2022-12-13 18:06:25,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:06:25,131 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1691 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:25,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 2581 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:06:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8524 states. [2022-12-13 18:06:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8524 to 4600. [2022-12-13 18:06:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 1.3772559252011307) internal successors, (6334), 4599 states have internal predecessors, (6334), 0 states have call successors, (0), 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 18:06:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6334 transitions. [2022-12-13 18:06:26,760 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6334 transitions. Word has length 64 [2022-12-13 18:06:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:26,761 INFO L495 AbstractCegarLoop]: Abstraction has 4600 states and 6334 transitions. [2022-12-13 18:06:26,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:06:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6334 transitions. [2022-12-13 18:06:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 18:06:26,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:26,762 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] [2022-12-13 18:06:26,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 18:06:26,762 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:26,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1481127882, now seen corresponding path program 1 times [2022-12-13 18:06:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:26,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931510995] [2022-12-13 18:06:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:26,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:27,215 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 18:06:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:27,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931510995] [2022-12-13 18:06:27,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931510995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:27,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:27,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-13 18:06:27,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948847286] [2022-12-13 18:06:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:27,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:06:27,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:27,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:06:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:06:27,217 INFO L87 Difference]: Start difference. First operand 4600 states and 6334 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:06:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:33,994 INFO L93 Difference]: Finished difference Result 11022 states and 15289 transitions. [2022-12-13 18:06:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 18:06:33,995 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-13 18:06:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:34,002 INFO L225 Difference]: With dead ends: 11022 [2022-12-13 18:06:34,002 INFO L226 Difference]: Without dead ends: 10585 [2022-12-13 18:06:34,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=378, Invalid=1344, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 18:06:34,004 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 2053 mSDsluCounter, 5371 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 6068 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:34,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 6068 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 18:06:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2022-12-13 18:06:35,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 4521. [2022-12-13 18:06:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 1.3769911504424779) internal successors, (6224), 4520 states have internal predecessors, (6224), 0 states have call successors, (0), 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 18:06:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6224 transitions. [2022-12-13 18:06:35,819 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6224 transitions. Word has length 64 [2022-12-13 18:06:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:35,819 INFO L495 AbstractCegarLoop]: Abstraction has 4521 states and 6224 transitions. [2022-12-13 18:06:35,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:06:35,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6224 transitions. [2022-12-13 18:06:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 18:06:35,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:35,821 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] [2022-12-13 18:06:35,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 18:06:35,821 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:35,821 INFO L85 PathProgramCache]: Analyzing trace with hash 880460014, now seen corresponding path program 1 times [2022-12-13 18:06:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:35,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599756085] [2022-12-13 18:06:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:35,866 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 18:06:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:35,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599756085] [2022-12-13 18:06:35,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599756085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:35,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:35,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:06:35,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453091794] [2022-12-13 18:06:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:35,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:06:35,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:35,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:06:35,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:06:35,868 INFO L87 Difference]: Start difference. First operand 4521 states and 6224 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:37,732 INFO L93 Difference]: Finished difference Result 4527 states and 6227 transitions. [2022-12-13 18:06:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:06:37,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-13 18:06:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:37,736 INFO L225 Difference]: With dead ends: 4527 [2022-12-13 18:06:37,736 INFO L226 Difference]: Without dead ends: 4084 [2022-12-13 18:06:37,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:06:37,737 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 477 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:37,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 623 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:06:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2022-12-13 18:06:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 4080. [2022-12-13 18:06:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 1.380485413091444) internal successors, (5631), 4079 states have internal predecessors, (5631), 0 states have call successors, (0), 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 18:06:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 5631 transitions. [2022-12-13 18:06:39,444 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 5631 transitions. Word has length 67 [2022-12-13 18:06:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:39,444 INFO L495 AbstractCegarLoop]: Abstraction has 4080 states and 5631 transitions. [2022-12-13 18:06:39,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 5631 transitions. [2022-12-13 18:06:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 18:06:39,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:39,446 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] [2022-12-13 18:06:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 18:06:39,446 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1617522588, now seen corresponding path program 1 times [2022-12-13 18:06:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:39,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339300948] [2022-12-13 18:06:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:39,484 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 18:06:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:39,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339300948] [2022-12-13 18:06:39,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339300948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:39,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:39,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432102808] [2022-12-13 18:06:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:39,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:06:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:39,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:06:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:06:39,485 INFO L87 Difference]: Start difference. First operand 4080 states and 5631 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:42,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:42,638 INFO L93 Difference]: Finished difference Result 10754 states and 14967 transitions. [2022-12-13 18:06:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:06:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 18:06:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:42,644 INFO L225 Difference]: With dead ends: 10754 [2022-12-13 18:06:42,644 INFO L226 Difference]: Without dead ends: 7262 [2022-12-13 18:06:42,646 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 18:06:42,646 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 119 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:42,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 434 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:06:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7262 states. [2022-12-13 18:06:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7262 to 6808. [2022-12-13 18:06:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6808 states, 6807 states have (on average 1.3844571764360218) internal successors, (9424), 6807 states have internal predecessors, (9424), 0 states have call successors, (0), 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 18:06:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6808 states to 6808 states and 9424 transitions. [2022-12-13 18:06:45,578 INFO L78 Accepts]: Start accepts. Automaton has 6808 states and 9424 transitions. Word has length 70 [2022-12-13 18:06:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:45,579 INFO L495 AbstractCegarLoop]: Abstraction has 6808 states and 9424 transitions. [2022-12-13 18:06:45,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6808 states and 9424 transitions. [2022-12-13 18:06:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 18:06:45,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:45,580 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] [2022-12-13 18:06:45,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 18:06:45,580 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 121806462, now seen corresponding path program 1 times [2022-12-13 18:06:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:45,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735495203] [2022-12-13 18:06:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:45,616 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 18:06:45,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:45,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735495203] [2022-12-13 18:06:45,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735495203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:45,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:45,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:45,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105420829] [2022-12-13 18:06:45,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:45,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:06:45,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:06:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:06:45,618 INFO L87 Difference]: Start difference. First operand 6808 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 18:06:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:06:51,149 INFO L93 Difference]: Finished difference Result 18628 states and 25870 transitions. [2022-12-13 18:06:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:06:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-12-13 18:06:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:06:51,161 INFO L225 Difference]: With dead ends: 18628 [2022-12-13 18:06:51,161 INFO L226 Difference]: Without dead ends: 12408 [2022-12-13 18:06:51,165 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 18:06:51,166 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 109 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:06:51,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 424 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:06:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2022-12-13 18:06:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 11502. [2022-12-13 18:06:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11502 states, 11501 states have (on average 1.382314581340753) internal successors, (15898), 11501 states have internal predecessors, (15898), 0 states have call successors, (0), 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 18:06:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11502 states to 11502 states and 15898 transitions. [2022-12-13 18:06:56,277 INFO L78 Accepts]: Start accepts. Automaton has 11502 states and 15898 transitions. Word has length 71 [2022-12-13 18:06:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:06:56,277 INFO L495 AbstractCegarLoop]: Abstraction has 11502 states and 15898 transitions. [2022-12-13 18:06:56,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 18:06:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 11502 states and 15898 transitions. [2022-12-13 18:06:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 18:06:56,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:06:56,278 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] [2022-12-13 18:06:56,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 18:06:56,278 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:06:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash -577663364, now seen corresponding path program 1 times [2022-12-13 18:06:56,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:56,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329059581] [2022-12-13 18:06:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:56,318 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 18:06:56,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:56,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329059581] [2022-12-13 18:06:56,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329059581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:56,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:56,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:56,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407467134] [2022-12-13 18:06:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:56,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:06:56,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:06:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:06:56,320 INFO L87 Difference]: Start difference. First operand 11502 states and 15898 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:07:05,613 INFO L93 Difference]: Finished difference Result 31274 states and 43068 transitions. [2022-12-13 18:07:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:07:05,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-13 18:07:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:07:05,631 INFO L225 Difference]: With dead ends: 31274 [2022-12-13 18:07:05,631 INFO L226 Difference]: Without dead ends: 20244 [2022-12-13 18:07:05,637 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 18:07:05,637 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 113 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 425 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 18:07:05,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 425 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:07:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20244 states. [2022-12-13 18:07:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20244 to 18370. [2022-12-13 18:07:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18370 states, 18369 states have (on average 1.3615874571288584) internal successors, (25011), 18369 states have internal predecessors, (25011), 0 states have call successors, (0), 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 18:07:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18370 states to 18370 states and 25011 transitions. [2022-12-13 18:07:14,078 INFO L78 Accepts]: Start accepts. Automaton has 18370 states and 25011 transitions. Word has length 73 [2022-12-13 18:07:14,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:07:14,078 INFO L495 AbstractCegarLoop]: Abstraction has 18370 states and 25011 transitions. [2022-12-13 18:07:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 18370 states and 25011 transitions. [2022-12-13 18:07:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 18:07:14,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:07:14,079 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] [2022-12-13 18:07:14,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 18:07:14,079 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:07:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash -686006937, now seen corresponding path program 1 times [2022-12-13 18:07:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:14,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668216662] [2022-12-13 18:07:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:14,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:14,165 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 18:07:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:14,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668216662] [2022-12-13 18:07:14,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668216662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:14,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:14,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:07:14,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736037532] [2022-12-13 18:07:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:07:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:07:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:07:14,167 INFO L87 Difference]: Start difference. First operand 18370 states and 25011 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:07:34,198 INFO L93 Difference]: Finished difference Result 39464 states and 52793 transitions. [2022-12-13 18:07:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:07:34,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-13 18:07:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:07:34,238 INFO L225 Difference]: With dead ends: 39464 [2022-12-13 18:07:34,239 INFO L226 Difference]: Without dead ends: 39462 [2022-12-13 18:07:34,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:07:34,246 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 334 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:07:34,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 987 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:07:34,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39462 states. [2022-12-13 18:07:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39462 to 20338. [2022-12-13 18:07:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20338 states, 20337 states have (on average 1.3265968431922113) internal successors, (26979), 20337 states have internal predecessors, (26979), 0 states have call successors, (0), 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 18:07:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20338 states to 20338 states and 26979 transitions. [2022-12-13 18:07:44,666 INFO L78 Accepts]: Start accepts. Automaton has 20338 states and 26979 transitions. Word has length 74 [2022-12-13 18:07:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:07:44,667 INFO L495 AbstractCegarLoop]: Abstraction has 20338 states and 26979 transitions. [2022-12-13 18:07:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 20338 states and 26979 transitions. [2022-12-13 18:07:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 18:07:44,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:07:44,668 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] [2022-12-13 18:07:44,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 18:07:44,668 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:07:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1483002414, now seen corresponding path program 1 times [2022-12-13 18:07:44,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:44,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160156021] [2022-12-13 18:07:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:44,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:44,691 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 18:07:44,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:44,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160156021] [2022-12-13 18:07:44,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160156021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:44,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:44,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:07:44,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582806243] [2022-12-13 18:07:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:44,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:07:44,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:44,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:07:44,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:07:44,692 INFO L87 Difference]: Start difference. First operand 20338 states and 26979 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 18:08:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:00,300 INFO L93 Difference]: Finished difference Result 50174 states and 66365 transitions. [2022-12-13 18:08:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:08:00,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-12-13 18:08:00,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:00,333 INFO L225 Difference]: With dead ends: 50174 [2022-12-13 18:08:00,333 INFO L226 Difference]: Without dead ends: 30308 [2022-12-13 18:08:00,345 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 18:08:00,345 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 130 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:00,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 316 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:08:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30308 states. [2022-12-13 18:08:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30308 to 29978. [2022-12-13 18:08:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29978 states, 29977 states have (on average 1.2988291023117724) internal successors, (38935), 29977 states have internal predecessors, (38935), 0 states have call successors, (0), 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 18:08:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29978 states to 29978 states and 38935 transitions. [2022-12-13 18:08:15,867 INFO L78 Accepts]: Start accepts. Automaton has 29978 states and 38935 transitions. Word has length 75 [2022-12-13 18:08:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:15,868 INFO L495 AbstractCegarLoop]: Abstraction has 29978 states and 38935 transitions. [2022-12-13 18:08:15,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 18:08:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 29978 states and 38935 transitions. [2022-12-13 18:08:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 18:08:15,871 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:15,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 18:08:15,872 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:08:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1263057428, now seen corresponding path program 1 times [2022-12-13 18:08:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:15,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318632987] [2022-12-13 18:08:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:16,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:16,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318632987] [2022-12-13 18:08:16,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318632987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:08:16,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649773175] [2022-12-13 18:08:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:16,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:16,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:08:16,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:08:16,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:08:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:16,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:08:16,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:08:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:17,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:08:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:18,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649773175] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:08:18,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:08:18,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-12-13 18:08:18,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361779155] [2022-12-13 18:08:18,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:08:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 18:08:18,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 18:08:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:08:18,004 INFO L87 Difference]: Start difference. First operand 29978 states and 38935 transitions. Second operand has 33 states, 33 states have (on average 7.515151515151516) internal successors, (248), 32 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:13:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:11,197 INFO L93 Difference]: Finished difference Result 415650 states and 526719 transitions. [2022-12-13 18:13:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2022-12-13 18:13:11,197 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.515151515151516) internal successors, (248), 32 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 18:13:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:13:11,897 INFO L225 Difference]: With dead ends: 415650 [2022-12-13 18:13:11,897 INFO L226 Difference]: Without dead ends: 399744 [2022-12-13 18:13:12,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56635 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=17392, Invalid=114740, Unknown=0, NotChecked=0, Total=132132 [2022-12-13 18:13:12,092 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 15672 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 12422 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15672 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 12565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 12422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:13:12,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15672 Valid, 13094 Invalid, 12565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 12422 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-12-13 18:13:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399744 states. [2022-12-13 18:13:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399744 to 30379. [2022-12-13 18:13:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30379 states, 30378 states have (on average 1.2982092303640793) internal successors, (39437), 30378 states have internal predecessors, (39437), 0 states have call successors, (0), 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 18:13:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30379 states to 30379 states and 39437 transitions. [2022-12-13 18:13:36,748 INFO L78 Accepts]: Start accepts. Automaton has 30379 states and 39437 transitions. Word has length 94 [2022-12-13 18:13:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:13:36,748 INFO L495 AbstractCegarLoop]: Abstraction has 30379 states and 39437 transitions. [2022-12-13 18:13:36,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.515151515151516) internal successors, (248), 32 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:13:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 30379 states and 39437 transitions. [2022-12-13 18:13:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 18:13:36,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:13:36,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:36,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:36,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 18:13:36,954 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:13:36,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash 225914628, now seen corresponding path program 1 times [2022-12-13 18:13:36,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:36,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257714141] [2022-12-13 18:13:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:37,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257714141] [2022-12-13 18:13:37,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257714141] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:37,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516683090] [2022-12-13 18:13:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:37,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:37,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe30526-0b1b-4625-b841-ba28f2769b8f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:13:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:13:37,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:38,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:39,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516683090] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:39,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:39,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-12-13 18:13:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818058514] [2022-12-13 18:13:39,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 18:13:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 18:13:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:13:39,082 INFO L87 Difference]: Start difference. First operand 30379 states and 39437 transitions. Second operand has 33 states, 33 states have (on average 7.636363636363637) internal successors, (252), 32 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)