./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ --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 9d22078cc0ed1f6555ed02c6ceb2e5694208de3c10c4e0f5a14ad82c4e25bb79 --- 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-dbf71c6-m [2022-10-17 10:50:54,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:50:54,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:50:54,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:50:54,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:50:54,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:50:54,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:50:54,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:50:54,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:50:54,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:50:54,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:50:54,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:50:54,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:50:54,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:50:54,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:50:54,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:50:54,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:50:54,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:50:54,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:50:54,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:50:55,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:50:55,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:50:55,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:50:55,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:50:55,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:50:55,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:50:55,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:50:55,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:50:55,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:50:55,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:50:55,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:50:55,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:50:55,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:50:55,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:50:55,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:50:55,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:50:55,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:50:55,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:50:55,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:50:55,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:50:55,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:50:55,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:50:55,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:50:55,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:50:55,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:50:55,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:50:55,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:50:55,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:50:55,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:50:55,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:50:55,076 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:50:55,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:50:55,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:50:55,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:50:55,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:50:55,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:50:55,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:50:55,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:50:55,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:50:55,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:50:55,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:50:55,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:50:55,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:50:55,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:50:55,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:50:55,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:50:55,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:50:55,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:50:55,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:50:55,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:50:55,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:50:55,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:50:55,083 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:50:55,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:50:55,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:50:55,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d22078cc0ed1f6555ed02c6ceb2e5694208de3c10c4e0f5a14ad82c4e25bb79 [2022-10-17 10:50:55,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:50:55,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:50:55,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:50:55,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:50:55,356 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:50:55,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2022-10-17 10:50:55,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/data/7ca15a695/16fc8ab7229c4560895795138a1b0c0c/FLAG6bc71af34 [2022-10-17 10:50:55,864 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:50:55,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c [2022-10-17 10:50:55,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/data/7ca15a695/16fc8ab7229c4560895795138a1b0c0c/FLAG6bc71af34 [2022-10-17 10:50:56,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/data/7ca15a695/16fc8ab7229c4560895795138a1b0c0c [2022-10-17 10:50:56,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:50:56,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:50:56,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:50:56,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:50:56,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:50:56,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba1076d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56, skipping insertion in model container [2022-10-17 10:50:56,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:50:56,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:50:56,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[35497,35510] [2022-10-17 10:50:56,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:50:56,629 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:50:56,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-1.c[35497,35510] [2022-10-17 10:50:56,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:50:56,696 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:50:56,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56 WrapperNode [2022-10-17 10:50:56,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:50:56,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:50:56,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:50:56,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:50:56,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,786 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 506 [2022-10-17 10:50:56,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:50:56,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:50:56,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:50:56,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:50:56,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,829 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:50:56,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:50:56,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:50:56,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:50:56,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (1/1) ... [2022-10-17 10:50:56,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:50:56,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:50:56,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:50:56,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:50:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:50:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:50:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:50:56,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:50:57,015 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:50:57,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:50:57,050 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:50:57,640 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-10-17 10:50:57,640 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-10-17 10:50:57,641 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:50:57,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:50:57,658 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:50:57,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:50:57 BoogieIcfgContainer [2022-10-17 10:50:57,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:50:57,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:50:57,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:50:57,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:50:57,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:50:56" (1/3) ... [2022-10-17 10:50:57,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1861ce59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:50:57, skipping insertion in model container [2022-10-17 10:50:57,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:56" (2/3) ... [2022-10-17 10:50:57,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1861ce59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:50:57, skipping insertion in model container [2022-10-17 10:50:57,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:50:57" (3/3) ... [2022-10-17 10:50:57,673 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-1.c [2022-10-17 10:50:57,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:50:57,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:50:57,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:50:57,798 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;@1466edc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:50:57,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:50:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 125 states have (on average 1.72) internal successors, (215), 126 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:50:57,822 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:57,823 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] [2022-10-17 10:50:57,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:57,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1457700990, now seen corresponding path program 1 times [2022-10-17 10:50:57,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:57,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813380294] [2022-10-17 10:50:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:57,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:58,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813380294] [2022-10-17 10:50:58,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813380294] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:58,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:58,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118230667] [2022-10-17 10:50:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:58,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:58,205 INFO L87 Difference]: Start difference. First operand has 127 states, 125 states have (on average 1.72) internal successors, (215), 126 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:58,287 INFO L93 Difference]: Finished difference Result 363 states and 617 transitions. [2022-10-17 10:50:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:58,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-10-17 10:50:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:58,301 INFO L225 Difference]: With dead ends: 363 [2022-10-17 10:50:58,301 INFO L226 Difference]: Without dead ends: 211 [2022-10-17 10:50:58,305 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 [2022-10-17 10:50:58,309 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 178 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:58,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 396 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-10-17 10:50:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-10-17 10:50:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.5) internal successors, (315), 210 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 315 transitions. [2022-10-17 10:50:58,365 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 315 transitions. Word has length 24 [2022-10-17 10:50:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:58,366 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 315 transitions. [2022-10-17 10:50:58,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 315 transitions. [2022-10-17 10:50:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:50:58,369 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:58,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:58,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:50:58,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:58,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 152202379, now seen corresponding path program 1 times [2022-10-17 10:50:58,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:58,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105507135] [2022-10-17 10:50:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:58,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105507135] [2022-10-17 10:50:58,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105507135] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:58,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:58,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988601701] [2022-10-17 10:50:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:58,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:58,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:58,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:58,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:58,468 INFO L87 Difference]: Start difference. First operand 211 states and 315 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:58,712 INFO L93 Difference]: Finished difference Result 340 states and 513 transitions. [2022-10-17 10:50:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:58,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-10-17 10:50:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:58,719 INFO L225 Difference]: With dead ends: 340 [2022-10-17 10:50:58,719 INFO L226 Difference]: Without dead ends: 236 [2022-10-17 10:50:58,727 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 [2022-10-17 10:50:58,730 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 14 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:58,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 258 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:50:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-10-17 10:50:58,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 228. [2022-10-17 10:50:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.4845814977973568) internal successors, (337), 227 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 337 transitions. [2022-10-17 10:50:58,772 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 337 transitions. Word has length 38 [2022-10-17 10:50:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:58,772 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 337 transitions. [2022-10-17 10:50:58,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 337 transitions. [2022-10-17 10:50:58,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-17 10:50:58,775 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:58,776 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:50:58,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:50:58,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:58,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:58,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1281794544, now seen corresponding path program 1 times [2022-10-17 10:50:58,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:58,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375874857] [2022-10-17 10:50:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:58,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 10:50:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:58,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375874857] [2022-10-17 10:50:58,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375874857] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:58,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:58,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:58,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683108943] [2022-10-17 10:50:58,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:58,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:58,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:58,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:58,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:58,951 INFO L87 Difference]: Start difference. First operand 228 states and 337 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:59,150 INFO L93 Difference]: Finished difference Result 551 states and 841 transitions. [2022-10-17 10:50:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:59,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-10-17 10:50:59,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:59,153 INFO L225 Difference]: With dead ends: 551 [2022-10-17 10:50:59,154 INFO L226 Difference]: Without dead ends: 328 [2022-10-17 10:50:59,158 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 [2022-10-17 10:50:59,163 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 53 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:59,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 222 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:50:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-10-17 10:50:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 310. [2022-10-17 10:50:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.4142394822006472) internal successors, (437), 309 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2022-10-17 10:50:59,199 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 55 [2022-10-17 10:50:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:59,199 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2022-10-17 10:50:59,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2022-10-17 10:50:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-17 10:50:59,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:59,210 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:59,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:50:59,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:59,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1258017753, now seen corresponding path program 1 times [2022-10-17 10:50:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:59,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088942484] [2022-10-17 10:50:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 10:50:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088942484] [2022-10-17 10:50:59,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088942484] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:59,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:59,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327166972] [2022-10-17 10:50:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:59,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:59,282 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:59,391 INFO L93 Difference]: Finished difference Result 659 states and 942 transitions. [2022-10-17 10:50:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:59,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-10-17 10:50:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:59,395 INFO L225 Difference]: With dead ends: 659 [2022-10-17 10:50:59,395 INFO L226 Difference]: Without dead ends: 356 [2022-10-17 10:50:59,396 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 [2022-10-17 10:50:59,397 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 14 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:59,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 261 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:50:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-10-17 10:50:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 348. [2022-10-17 10:50:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.3976945244956773) internal successors, (485), 347 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 485 transitions. [2022-10-17 10:50:59,418 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 485 transitions. Word has length 68 [2022-10-17 10:50:59,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:59,419 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 485 transitions. [2022-10-17 10:50:59,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,420 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 485 transitions. [2022-10-17 10:50:59,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-17 10:50:59,421 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:59,421 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:50:59,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash 181274982, now seen corresponding path program 1 times [2022-10-17 10:50:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:59,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413293985] [2022-10-17 10:50:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 10:50:59,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:59,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413293985] [2022-10-17 10:50:59,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413293985] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:59,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:59,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:59,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581208869] [2022-10-17 10:50:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:59,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:59,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:59,532 INFO L87 Difference]: Start difference. First operand 348 states and 485 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) [2022-10-17 10:50:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:59,689 INFO L93 Difference]: Finished difference Result 828 states and 1180 transitions. [2022-10-17 10:50:59,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:59,690 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 81 [2022-10-17 10:50:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:59,696 INFO L225 Difference]: With dead ends: 828 [2022-10-17 10:50:59,697 INFO L226 Difference]: Without dead ends: 485 [2022-10-17 10:50:59,697 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 [2022-10-17 10:50:59,698 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 126 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:59,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 172 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:50:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-10-17 10:50:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 459. [2022-10-17 10:50:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.4323144104803494) internal successors, (656), 458 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 656 transitions. [2022-10-17 10:50:59,723 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 656 transitions. Word has length 81 [2022-10-17 10:50:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:59,724 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 656 transitions. [2022-10-17 10:50:59,724 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) [2022-10-17 10:50:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 656 transitions. [2022-10-17 10:50:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 10:50:59,726 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:59,726 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:59,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:50:59,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash -901961809, now seen corresponding path program 1 times [2022-10-17 10:50:59,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:59,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138388622] [2022-10-17 10:50:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-17 10:50:59,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138388622] [2022-10-17 10:50:59,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138388622] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:59,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:59,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:59,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601339740] [2022-10-17 10:50:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:59,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:59,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:59,808 INFO L87 Difference]: Start difference. First operand 459 states and 656 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) [2022-10-17 10:50:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:59,930 INFO L93 Difference]: Finished difference Result 926 states and 1341 transitions. [2022-10-17 10:50:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:59,931 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 84 [2022-10-17 10:50:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:59,937 INFO L225 Difference]: With dead ends: 926 [2022-10-17 10:50:59,938 INFO L226 Difference]: Without dead ends: 507 [2022-10-17 10:50:59,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:59,941 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 12 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:59,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 260 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:50:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-10-17 10:50:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 501. [2022-10-17 10:50:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.416) internal successors, (708), 500 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 708 transitions. [2022-10-17 10:50:59,970 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 708 transitions. Word has length 84 [2022-10-17 10:50:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:59,971 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 708 transitions. [2022-10-17 10:50:59,972 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) [2022-10-17 10:50:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 708 transitions. [2022-10-17 10:50:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 10:50:59,977 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:59,977 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:59,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:50:59,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:59,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1810291289, now seen corresponding path program 1 times [2022-10-17 10:50:59,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:59,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531377755] [2022-10-17 10:50:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:59,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:51:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:00,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531377755] [2022-10-17 10:51:00,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531377755] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:00,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:00,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:00,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469311263] [2022-10-17 10:51:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:00,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:00,143 INFO L87 Difference]: Start difference. First operand 501 states and 708 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:00,186 INFO L93 Difference]: Finished difference Result 980 states and 1398 transitions. [2022-10-17 10:51:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:00,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-10-17 10:51:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:00,194 INFO L225 Difference]: With dead ends: 980 [2022-10-17 10:51:00,195 INFO L226 Difference]: Without dead ends: 739 [2022-10-17 10:51:00,196 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 [2022-10-17 10:51:00,198 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 125 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:00,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 464 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:51:00,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-10-17 10:51:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2022-10-17 10:51:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 1.4173441734417345) internal successors, (1046), 738 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1046 transitions. [2022-10-17 10:51:00,229 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1046 transitions. Word has length 104 [2022-10-17 10:51:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:00,229 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1046 transitions. [2022-10-17 10:51:00,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1046 transitions. [2022-10-17 10:51:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 10:51:00,233 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:00,233 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:00,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:51:00,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash 151283369, now seen corresponding path program 1 times [2022-10-17 10:51:00,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:00,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034189519] [2022-10-17 10:51:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:00,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-10-17 10:51:00,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:00,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034189519] [2022-10-17 10:51:00,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034189519] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:00,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:00,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92271086] [2022-10-17 10:51:00,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:00,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:00,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:00,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:00,314 INFO L87 Difference]: Start difference. First operand 739 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-10-17 10:51:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:00,349 INFO L93 Difference]: Finished difference Result 1239 states and 1758 transitions. [2022-10-17 10:51:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 104 [2022-10-17 10:51:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:00,355 INFO L225 Difference]: With dead ends: 1239 [2022-10-17 10:51:00,355 INFO L226 Difference]: Without dead ends: 760 [2022-10-17 10:51:00,356 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 [2022-10-17 10:51:00,357 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 11 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:00,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 345 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:51:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-10-17 10:51:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-10-17 10:51:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 1.4137022397891963) internal successors, (1073), 759 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1073 transitions. [2022-10-17 10:51:00,386 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1073 transitions. Word has length 104 [2022-10-17 10:51:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:00,387 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1073 transitions. [2022-10-17 10:51:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-10-17 10:51:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1073 transitions. [2022-10-17 10:51:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-10-17 10:51:00,396 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:00,397 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2022-10-17 10:51:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:51:00,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash -492994255, now seen corresponding path program 1 times [2022-10-17 10:51:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:00,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620671890] [2022-10-17 10:51:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:00,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-10-17 10:51:00,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620671890] [2022-10-17 10:51:00,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620671890] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:00,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:00,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713854189] [2022-10-17 10:51:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:00,489 INFO L87 Difference]: Start difference. First operand 760 states and 1073 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) [2022-10-17 10:51:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:00,534 INFO L93 Difference]: Finished difference Result 1001 states and 1419 transitions. [2022-10-17 10:51:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:00,534 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 106 [2022-10-17 10:51:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:00,540 INFO L225 Difference]: With dead ends: 1001 [2022-10-17 10:51:00,540 INFO L226 Difference]: Without dead ends: 999 [2022-10-17 10:51:00,541 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 [2022-10-17 10:51:00,543 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 138 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:00,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 303 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:51:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-10-17 10:51:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 999. [2022-10-17 10:51:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.4198396793587174) internal successors, (1417), 998 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1417 transitions. [2022-10-17 10:51:00,580 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1417 transitions. Word has length 106 [2022-10-17 10:51:00,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:00,580 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1417 transitions. [2022-10-17 10:51:00,581 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) [2022-10-17 10:51:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1417 transitions. [2022-10-17 10:51:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-17 10:51:00,585 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:00,585 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:00,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:51:00,586 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1913560025, now seen corresponding path program 1 times [2022-10-17 10:51:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:00,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100534431] [2022-10-17 10:51:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-10-17 10:51:00,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:00,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100534431] [2022-10-17 10:51:00,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100534431] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:00,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:00,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:00,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118163304] [2022-10-17 10:51:00,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:00,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:00,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:00,676 INFO L87 Difference]: Start difference. First operand 999 states and 1417 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:00,795 INFO L93 Difference]: Finished difference Result 2064 states and 2956 transitions. [2022-10-17 10:51:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:00,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 131 [2022-10-17 10:51:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:00,802 INFO L225 Difference]: With dead ends: 2064 [2022-10-17 10:51:00,803 INFO L226 Difference]: Without dead ends: 1105 [2022-10-17 10:51:00,804 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 [2022-10-17 10:51:00,805 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 13 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:00,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 259 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:00,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-10-17 10:51:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1091. [2022-10-17 10:51:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 1.4027522935779817) internal successors, (1529), 1090 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1529 transitions. [2022-10-17 10:51:00,844 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1529 transitions. Word has length 131 [2022-10-17 10:51:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:00,844 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1529 transitions. [2022-10-17 10:51:00,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1529 transitions. [2022-10-17 10:51:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-10-17 10:51:00,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:00,848 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:00,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:51:00,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash 296450083, now seen corresponding path program 1 times [2022-10-17 10:51:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143637054] [2022-10-17 10:51:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-10-17 10:51:00,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:00,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143637054] [2022-10-17 10:51:00,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143637054] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:00,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:00,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:00,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302220980] [2022-10-17 10:51:00,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:00,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:00,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:00,960 INFO L87 Difference]: Start difference. First operand 1091 states and 1529 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:01,118 INFO L93 Difference]: Finished difference Result 2346 states and 3350 transitions. [2022-10-17 10:51:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 152 [2022-10-17 10:51:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:01,127 INFO L225 Difference]: With dead ends: 2346 [2022-10-17 10:51:01,129 INFO L226 Difference]: Without dead ends: 1287 [2022-10-17 10:51:01,131 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 [2022-10-17 10:51:01,132 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 66 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:01,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 211 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-10-17 10:51:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1247. [2022-10-17 10:51:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 1.4069020866773676) internal successors, (1753), 1246 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1753 transitions. [2022-10-17 10:51:01,176 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1753 transitions. Word has length 152 [2022-10-17 10:51:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:01,178 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 1753 transitions. [2022-10-17 10:51:01,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1753 transitions. [2022-10-17 10:51:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:51:01,182 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:01,182 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2022-10-17 10:51:01,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:51:01,183 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2080513012, now seen corresponding path program 1 times [2022-10-17 10:51:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:01,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905096152] [2022-10-17 10:51:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:01,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-10-17 10:51:01,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:01,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905096152] [2022-10-17 10:51:01,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905096152] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:01,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:01,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:01,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381865531] [2022-10-17 10:51:01,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:01,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:01,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:01,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:01,270 INFO L87 Difference]: Start difference. First operand 1247 states and 1753 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:01,403 INFO L93 Difference]: Finished difference Result 2574 states and 3602 transitions. [2022-10-17 10:51:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:01,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 188 [2022-10-17 10:51:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:01,412 INFO L225 Difference]: With dead ends: 2574 [2022-10-17 10:51:01,412 INFO L226 Difference]: Without dead ends: 1367 [2022-10-17 10:51:01,416 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 [2022-10-17 10:51:01,417 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 10 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:01,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 260 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-10-17 10:51:01,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1359. [2022-10-17 10:51:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 1.3880706921944035) internal successors, (1885), 1358 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1885 transitions. [2022-10-17 10:51:01,491 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1885 transitions. Word has length 188 [2022-10-17 10:51:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:01,492 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 1885 transitions. [2022-10-17 10:51:01,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1885 transitions. [2022-10-17 10:51:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:51:01,497 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:01,497 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2022-10-17 10:51:01,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:51:01,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:01,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1653754506, now seen corresponding path program 1 times [2022-10-17 10:51:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:01,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447700329] [2022-10-17 10:51:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-10-17 10:51:01,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447700329] [2022-10-17 10:51:01,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447700329] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:01,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:01,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:01,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867734832] [2022-10-17 10:51:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:01,581 INFO L87 Difference]: Start difference. First operand 1359 states and 1885 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:01,718 INFO L93 Difference]: Finished difference Result 2814 states and 3902 transitions. [2022-10-17 10:51:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:01,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 188 [2022-10-17 10:51:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:01,727 INFO L225 Difference]: With dead ends: 2814 [2022-10-17 10:51:01,727 INFO L226 Difference]: Without dead ends: 1495 [2022-10-17 10:51:01,729 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 [2022-10-17 10:51:01,730 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 11 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:01,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 261 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-10-17 10:51:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1483. [2022-10-17 10:51:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1482 states have (on average 1.3690958164642375) internal successors, (2029), 1482 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2029 transitions. [2022-10-17 10:51:01,785 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2029 transitions. Word has length 188 [2022-10-17 10:51:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:01,786 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 2029 transitions. [2022-10-17 10:51:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2029 transitions. [2022-10-17 10:51:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-10-17 10:51:01,791 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:01,791 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:01,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:51:01,792 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1229348372, now seen corresponding path program 1 times [2022-10-17 10:51:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:01,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936311433] [2022-10-17 10:51:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-10-17 10:51:01,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:01,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936311433] [2022-10-17 10:51:01,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936311433] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:01,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:01,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19569671] [2022-10-17 10:51:01,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:01,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:01,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:01,952 INFO L87 Difference]: Start difference. First operand 1483 states and 2029 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:02,037 INFO L93 Difference]: Finished difference Result 4365 states and 5987 transitions. [2022-10-17 10:51:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 218 [2022-10-17 10:51:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:02,055 INFO L225 Difference]: With dead ends: 4365 [2022-10-17 10:51:02,055 INFO L226 Difference]: Without dead ends: 2922 [2022-10-17 10:51:02,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:02,059 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 126 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:02,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 482 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:51:02,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-10-17 10:51:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2022-10-17 10:51:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2919 states have (on average 1.3706748886605002) internal successors, (4001), 2919 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4001 transitions. [2022-10-17 10:51:02,176 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4001 transitions. Word has length 218 [2022-10-17 10:51:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:02,177 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4001 transitions. [2022-10-17 10:51:02,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4001 transitions. [2022-10-17 10:51:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-10-17 10:51:02,184 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:02,184 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 10:51:02,185 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1790048150, now seen corresponding path program 1 times [2022-10-17 10:51:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:02,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975210421] [2022-10-17 10:51:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-10-17 10:51:02,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:02,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975210421] [2022-10-17 10:51:02,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975210421] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:02,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:02,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579258705] [2022-10-17 10:51:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:02,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:02,287 INFO L87 Difference]: Start difference. First operand 2920 states and 4001 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:02,488 INFO L93 Difference]: Finished difference Result 6100 states and 8366 transitions. [2022-10-17 10:51:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:02,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 218 [2022-10-17 10:51:02,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:02,507 INFO L225 Difference]: With dead ends: 6100 [2022-10-17 10:51:02,507 INFO L226 Difference]: Without dead ends: 3220 [2022-10-17 10:51:02,513 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 [2022-10-17 10:51:02,514 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 11 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:02,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 261 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2022-10-17 10:51:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3204. [2022-10-17 10:51:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3204 states, 3203 states have (on average 1.3502965969403684) internal successors, (4325), 3203 states have internal predecessors, (4325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4325 transitions. [2022-10-17 10:51:02,640 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 4325 transitions. Word has length 218 [2022-10-17 10:51:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:02,641 INFO L495 AbstractCegarLoop]: Abstraction has 3204 states and 4325 transitions. [2022-10-17 10:51:02,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 4325 transitions. [2022-10-17 10:51:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-10-17 10:51:02,651 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:02,652 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 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] [2022-10-17 10:51:02,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-17 10:51:02,652 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash 678419774, now seen corresponding path program 1 times [2022-10-17 10:51:02,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:02,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939685679] [2022-10-17 10:51:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:02,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-10-17 10:51:02,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:02,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939685679] [2022-10-17 10:51:02,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939685679] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:02,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:02,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262362388] [2022-10-17 10:51:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:02,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:02,755 INFO L87 Difference]: Start difference. First operand 3204 states and 4325 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:02,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:02,964 INFO L93 Difference]: Finished difference Result 6516 states and 8798 transitions. [2022-10-17 10:51:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:02,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 242 [2022-10-17 10:51:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:02,984 INFO L225 Difference]: With dead ends: 6516 [2022-10-17 10:51:02,984 INFO L226 Difference]: Without dead ends: 3352 [2022-10-17 10:51:02,988 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 [2022-10-17 10:51:02,989 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 10 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:02,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 260 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2022-10-17 10:51:03,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3336. [2022-10-17 10:51:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3335 states have (on average 1.3424287856071964) internal successors, (4477), 3335 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4477 transitions. [2022-10-17 10:51:03,129 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4477 transitions. Word has length 242 [2022-10-17 10:51:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:03,130 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 4477 transitions. [2022-10-17 10:51:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4477 transitions. [2022-10-17 10:51:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-10-17 10:51:03,139 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:03,139 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:51:03,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-17 10:51:03,139 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -101941725, now seen corresponding path program 1 times [2022-10-17 10:51:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:03,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844256440] [2022-10-17 10:51:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-10-17 10:51:03,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:03,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844256440] [2022-10-17 10:51:03,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844256440] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:03,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:03,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125025656] [2022-10-17 10:51:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:03,283 INFO L87 Difference]: Start difference. First operand 3336 states and 4477 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:03,511 INFO L93 Difference]: Finished difference Result 7032 states and 9578 transitions. [2022-10-17 10:51:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:03,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2022-10-17 10:51:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:03,533 INFO L225 Difference]: With dead ends: 7032 [2022-10-17 10:51:03,533 INFO L226 Difference]: Without dead ends: 3736 [2022-10-17 10:51:03,538 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 [2022-10-17 10:51:03,539 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:03,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 253 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:03,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-10-17 10:51:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3648. [2022-10-17 10:51:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 1.3284891691801481) internal successors, (4845), 3647 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 4845 transitions. [2022-10-17 10:51:03,677 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 4845 transitions. Word has length 253 [2022-10-17 10:51:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:03,677 INFO L495 AbstractCegarLoop]: Abstraction has 3648 states and 4845 transitions. [2022-10-17 10:51:03,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 4845 transitions. [2022-10-17 10:51:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-10-17 10:51:03,687 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:03,688 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:03,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-17 10:51:03,688 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:03,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash 324455461, now seen corresponding path program 1 times [2022-10-17 10:51:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:03,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410139187] [2022-10-17 10:51:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-10-17 10:51:03,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:03,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410139187] [2022-10-17 10:51:03,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410139187] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:03,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:03,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:03,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807371598] [2022-10-17 10:51:03,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:03,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:03,833 INFO L87 Difference]: Start difference. First operand 3648 states and 4845 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:04,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:04,102 INFO L93 Difference]: Finished difference Result 7664 states and 10122 transitions. [2022-10-17 10:51:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:04,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 267 [2022-10-17 10:51:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:04,125 INFO L225 Difference]: With dead ends: 7664 [2022-10-17 10:51:04,125 INFO L226 Difference]: Without dead ends: 4056 [2022-10-17 10:51:04,131 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 [2022-10-17 10:51:04,132 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 135 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:04,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 139 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:04,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2022-10-17 10:51:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 3768. [2022-10-17 10:51:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3767 states have (on average 1.3243960711441465) internal successors, (4989), 3767 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 4989 transitions. [2022-10-17 10:51:04,286 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 4989 transitions. Word has length 267 [2022-10-17 10:51:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:04,287 INFO L495 AbstractCegarLoop]: Abstraction has 3768 states and 4989 transitions. [2022-10-17 10:51:04,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 4989 transitions. [2022-10-17 10:51:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-10-17 10:51:04,297 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:04,297 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-17 10:51:04,298 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash 842255411, now seen corresponding path program 1 times [2022-10-17 10:51:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:04,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195953172] [2022-10-17 10:51:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2022-10-17 10:51:04,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:04,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195953172] [2022-10-17 10:51:04,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195953172] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:04,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:04,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:04,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66011396] [2022-10-17 10:51:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:04,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:04,417 INFO L87 Difference]: Start difference. First operand 3768 states and 4989 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:04,642 INFO L93 Difference]: Finished difference Result 10720 states and 14279 transitions. [2022-10-17 10:51:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:04,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 268 [2022-10-17 10:51:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:04,659 INFO L225 Difference]: With dead ends: 10720 [2022-10-17 10:51:04,659 INFO L226 Difference]: Without dead ends: 6992 [2022-10-17 10:51:04,666 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 [2022-10-17 10:51:04,666 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 83 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:04,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 469 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:51:04,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2022-10-17 10:51:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 6990. [2022-10-17 10:51:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6989 states have (on average 1.3325225354127914) internal successors, (9313), 6989 states have internal predecessors, (9313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 9313 transitions. [2022-10-17 10:51:04,985 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 9313 transitions. Word has length 268 [2022-10-17 10:51:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:04,985 INFO L495 AbstractCegarLoop]: Abstraction has 6990 states and 9313 transitions. [2022-10-17 10:51:04,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 9313 transitions. [2022-10-17 10:51:05,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-10-17 10:51:05,010 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:05,010 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-17 10:51:05,011 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1556363552, now seen corresponding path program 1 times [2022-10-17 10:51:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:05,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110311172] [2022-10-17 10:51:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:05,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-10-17 10:51:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:05,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110311172] [2022-10-17 10:51:05,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110311172] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:05,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:05,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:05,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678776519] [2022-10-17 10:51:05,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:05,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:05,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:05,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:05,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:05,134 INFO L87 Difference]: Start difference. First operand 6990 states and 9313 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:05,420 INFO L93 Difference]: Finished difference Result 13948 states and 18570 transitions. [2022-10-17 10:51:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 269 [2022-10-17 10:51:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:05,436 INFO L225 Difference]: With dead ends: 13948 [2022-10-17 10:51:05,436 INFO L226 Difference]: Without dead ends: 6998 [2022-10-17 10:51:05,446 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 [2022-10-17 10:51:05,447 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 11 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:05,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 256 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6998 states. [2022-10-17 10:51:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6998 to 6966. [2022-10-17 10:51:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6966 states, 6965 states have (on average 1.3061019382627423) internal successors, (9097), 6965 states have internal predecessors, (9097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6966 states to 6966 states and 9097 transitions. [2022-10-17 10:51:05,756 INFO L78 Accepts]: Start accepts. Automaton has 6966 states and 9097 transitions. Word has length 269 [2022-10-17 10:51:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:05,756 INFO L495 AbstractCegarLoop]: Abstraction has 6966 states and 9097 transitions. [2022-10-17 10:51:05,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 6966 states and 9097 transitions. [2022-10-17 10:51:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-10-17 10:51:05,771 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:05,771 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-10-17 10:51:05,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-17 10:51:05,771 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1277617296, now seen corresponding path program 1 times [2022-10-17 10:51:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997963316] [2022-10-17 10:51:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-10-17 10:51:06,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:06,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997963316] [2022-10-17 10:51:06,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997963316] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:51:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445558475] [2022-10-17 10:51:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:06,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:51:06,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:51:06,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:51:06,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:51:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:51:06,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:51:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-10-17 10:51:06,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:51:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 328 proven. 18 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-10-17 10:51:06,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445558475] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:51:06,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:51:06,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-10-17 10:51:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286358662] [2022-10-17 10:51:06,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:51:06,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:51:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:51:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:51:06,531 INFO L87 Difference]: Start difference. First operand 6966 states and 9097 transitions. Second operand has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:07,456 INFO L93 Difference]: Finished difference Result 18432 states and 24463 transitions. [2022-10-17 10:51:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:51:07,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 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 292 [2022-10-17 10:51:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:07,482 INFO L225 Difference]: With dead ends: 18432 [2022-10-17 10:51:07,483 INFO L226 Difference]: Without dead ends: 11450 [2022-10-17 10:51:07,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:51:07,493 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 217 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:07,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 898 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:51:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11450 states. [2022-10-17 10:51:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11450 to 9800. [2022-10-17 10:51:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9800 states, 9799 states have (on average 1.3263598326359833) internal successors, (12997), 9799 states have internal predecessors, (12997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9800 states to 9800 states and 12997 transitions. [2022-10-17 10:51:07,860 INFO L78 Accepts]: Start accepts. Automaton has 9800 states and 12997 transitions. Word has length 292 [2022-10-17 10:51:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:07,861 INFO L495 AbstractCegarLoop]: Abstraction has 9800 states and 12997 transitions. [2022-10-17 10:51:07,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9800 states and 12997 transitions. [2022-10-17 10:51:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-10-17 10:51:07,881 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:07,882 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:07,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:51:08,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:51:08,098 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1037661491, now seen corresponding path program 2 times [2022-10-17 10:51:08,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:08,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042994081] [2022-10-17 10:51:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:08,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 407 proven. 5 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-10-17 10:51:08,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042994081] [2022-10-17 10:51:08,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042994081] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:51:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595531609] [2022-10-17 10:51:08,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:51:08,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:51:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:51:08,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:51:08,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:51:08,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:51:08,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:51:08,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:51:08,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:51:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2022-10-17 10:51:08,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:51:08,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595531609] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:08,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:51:08,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 10:51:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30492902] [2022-10-17 10:51:08,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:08,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:51:08,578 INFO L87 Difference]: Start difference. First operand 9800 states and 12997 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:08,933 INFO L93 Difference]: Finished difference Result 19604 states and 25974 transitions. [2022-10-17 10:51:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:08,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 305 [2022-10-17 10:51:08,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:08,956 INFO L225 Difference]: With dead ends: 19604 [2022-10-17 10:51:08,956 INFO L226 Difference]: Without dead ends: 9844 [2022-10-17 10:51:08,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:51:08,971 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 53 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:08,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 236 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9844 states. [2022-10-17 10:51:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9844 to 8988. [2022-10-17 10:51:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 8987 states have (on average 1.2837431845999778) internal successors, (11537), 8987 states have internal predecessors, (11537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 11537 transitions. [2022-10-17 10:51:09,445 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 11537 transitions. Word has length 305 [2022-10-17 10:51:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:09,446 INFO L495 AbstractCegarLoop]: Abstraction has 8988 states and 11537 transitions. [2022-10-17 10:51:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 11537 transitions. [2022-10-17 10:51:09,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-10-17 10:51:09,467 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:09,467 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:09,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:51:09,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-17 10:51:09,686 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:09,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash 650041975, now seen corresponding path program 1 times [2022-10-17 10:51:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:09,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187193684] [2022-10-17 10:51:09,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:09,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 954 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-10-17 10:51:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:09,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187193684] [2022-10-17 10:51:09,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187193684] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:51:09,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220911758] [2022-10-17 10:51:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:09,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:51:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:51:09,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:51:09,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:51:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:10,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:51:10,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:51:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 821 proven. 0 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2022-10-17 10:51:10,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:51:10,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220911758] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:10,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:51:10,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 10:51:10,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904444759] [2022-10-17 10:51:10,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:10,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:10,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:10,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:10,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:51:10,456 INFO L87 Difference]: Start difference. First operand 8988 states and 11537 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:10,825 INFO L93 Difference]: Finished difference Result 22010 states and 28224 transitions. [2022-10-17 10:51:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 372 [2022-10-17 10:51:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:10,856 INFO L225 Difference]: With dead ends: 22010 [2022-10-17 10:51:10,856 INFO L226 Difference]: Without dead ends: 13062 [2022-10-17 10:51:10,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:51:10,872 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 61 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:10,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 472 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:51:10,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13062 states. [2022-10-17 10:51:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13062 to 13062. [2022-10-17 10:51:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13062 states, 13061 states have (on average 1.2796110558150218) internal successors, (16713), 13061 states have internal predecessors, (16713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13062 states to 13062 states and 16713 transitions. [2022-10-17 10:51:11,362 INFO L78 Accepts]: Start accepts. Automaton has 13062 states and 16713 transitions. Word has length 372 [2022-10-17 10:51:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:11,363 INFO L495 AbstractCegarLoop]: Abstraction has 13062 states and 16713 transitions. [2022-10-17 10:51:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 13062 states and 16713 transitions. [2022-10-17 10:51:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-10-17 10:51:11,396 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:11,397 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:11,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:51:11,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-17 10:51:11,610 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash -590181313, now seen corresponding path program 1 times [2022-10-17 10:51:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:11,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682196079] [2022-10-17 10:51:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 956 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-10-17 10:51:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682196079] [2022-10-17 10:51:11,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682196079] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:51:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394594090] [2022-10-17 10:51:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:11,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:51:11,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:51:11,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:51:11,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:51:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:12,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:51:12,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:51:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 956 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-10-17 10:51:12,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:51:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 956 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-10-17 10:51:12,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394594090] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:51:12,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:51:12,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-10-17 10:51:12,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928095120] [2022-10-17 10:51:12,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:51:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:51:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:51:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:51:12,162 INFO L87 Difference]: Start difference. First operand 13062 states and 16713 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:12,746 INFO L93 Difference]: Finished difference Result 29734 states and 37874 transitions. [2022-10-17 10:51:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:51:12,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 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 374 [2022-10-17 10:51:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:12,787 INFO L225 Difference]: With dead ends: 29734 [2022-10-17 10:51:12,788 INFO L226 Difference]: Without dead ends: 16700 [2022-10-17 10:51:12,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:51:12,806 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 218 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:12,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 607 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:51:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16700 states. [2022-10-17 10:51:13,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16700 to 14417. [2022-10-17 10:51:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14417 states, 14416 states have (on average 1.278718091009989) internal successors, (18434), 14416 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14417 states to 14417 states and 18434 transitions. [2022-10-17 10:51:13,372 INFO L78 Accepts]: Start accepts. Automaton has 14417 states and 18434 transitions. Word has length 374 [2022-10-17 10:51:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:13,373 INFO L495 AbstractCegarLoop]: Abstraction has 14417 states and 18434 transitions. [2022-10-17 10:51:13,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14417 states and 18434 transitions. [2022-10-17 10:51:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-10-17 10:51:13,409 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:13,409 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:13,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:51:13,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-17 10:51:13,630 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:13,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:13,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1273645298, now seen corresponding path program 1 times [2022-10-17 10:51:13,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:13,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579747923] [2022-10-17 10:51:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:13,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 886 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2022-10-17 10:51:13,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:13,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579747923] [2022-10-17 10:51:13,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579747923] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:51:13,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:51:13,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:51:13,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120298217] [2022-10-17 10:51:13,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:51:13,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:51:13,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:51:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:51:13,824 INFO L87 Difference]: Start difference. First operand 14417 states and 18434 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:14,135 INFO L93 Difference]: Finished difference Result 25708 states and 32305 transitions. [2022-10-17 10:51:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:51:14,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 413 [2022-10-17 10:51:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:14,150 INFO L225 Difference]: With dead ends: 25708 [2022-10-17 10:51:14,150 INFO L226 Difference]: Without dead ends: 5877 [2022-10-17 10:51:14,162 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 [2022-10-17 10:51:14,162 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 39 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:14,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 262 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:51:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5877 states. [2022-10-17 10:51:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5877 to 5476. [2022-10-17 10:51:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5475 states have (on average 1.2622831050228311) internal successors, (6911), 5475 states have internal predecessors, (6911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 6911 transitions. [2022-10-17 10:51:14,311 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 6911 transitions. Word has length 413 [2022-10-17 10:51:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:14,311 INFO L495 AbstractCegarLoop]: Abstraction has 5476 states and 6911 transitions. [2022-10-17 10:51:14,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 6911 transitions. [2022-10-17 10:51:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-10-17 10:51:14,325 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:14,326 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:14,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-10-17 10:51:14,326 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash 381067605, now seen corresponding path program 1 times [2022-10-17 10:51:14,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:14,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498111173] [2022-10-17 10:51:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:14,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:51:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 1283 proven. 14 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2022-10-17 10:51:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:51:14,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498111173] [2022-10-17 10:51:14,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498111173] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:51:14,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262704016] [2022-10-17 10:51:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:14,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:51:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:51:14,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:51:14,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:51:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:51:14,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:51:14,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:51:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 1283 proven. 14 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2022-10-17 10:51:14,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:51:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 1283 proven. 14 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2022-10-17 10:51:14,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262704016] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:51:14,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:51:14,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-10-17 10:51:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561478681] [2022-10-17 10:51:14,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:51:14,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:51:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:51:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:51:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:51:14,875 INFO L87 Difference]: Start difference. First operand 5476 states and 6911 transitions. Second operand has 8 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:51:15,338 INFO L93 Difference]: Finished difference Result 6913 states and 8716 transitions. [2022-10-17 10:51:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:51:15,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 0 states have call successors, (0), 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 442 [2022-10-17 10:51:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:51:15,339 INFO L225 Difference]: With dead ends: 6913 [2022-10-17 10:51:15,340 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 10:51:15,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:51:15,344 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 101 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:51:15,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 862 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:51:15,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 10:51:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 10:51:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 10:51:15,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 442 [2022-10-17 10:51:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:51:15,348 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:51:15,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:51:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 10:51:15,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 10:51:15,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:51:15,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:51:15,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6662358f-200e-40dd-ab62-f50ce15dd5a9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-17 10:51:15,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.