./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.05.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.05.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro --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 d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f --- 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-8393723 [2022-11-18 19:49:32,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:49:32,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:49:33,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:49:33,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:49:33,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:49:33,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:49:33,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:49:33,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:49:33,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:49:33,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:49:33,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:49:33,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:49:33,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:49:33,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:49:33,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:49:33,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:49:33,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:49:33,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:49:33,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:49:33,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:49:33,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:49:33,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:49:33,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:49:33,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:49:33,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:49:33,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:49:33,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:49:33,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:49:33,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:49:33,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:49:33,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:49:33,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:49:33,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:49:33,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:49:33,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:49:33,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:49:33,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:49:33,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:49:33,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:49:33,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:49:33,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:49:33,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:49:33,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:49:33,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:49:33,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:49:33,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:49:33,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:49:33,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:49:33,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:49:33,134 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:49:33,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:49:33,136 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:49:33,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:49:33,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:49:33,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:49:33,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:49:33,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:49:33,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:49:33,137 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:49:33,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:49:33,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:49:33,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:49:33,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:49:33,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:49:33,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:49:33,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:33,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:49:33,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:49:33,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:49:33,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:49:33,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:49:33,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:49:33,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:49:33,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:49:33,143 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_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f [2022-11-18 19:49:33,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:49:33,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:49:33,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:49:33,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:49:33,475 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:49:33,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/systemc/transmitter.05.cil.c [2022-11-18 19:49:33,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/data/5e94cfcc5/801cac3e04a34424a485951ed3ba8eeb/FLAG87f1c2bfb [2022-11-18 19:49:34,054 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:49:34,054 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/sv-benchmarks/c/systemc/transmitter.05.cil.c [2022-11-18 19:49:34,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/data/5e94cfcc5/801cac3e04a34424a485951ed3ba8eeb/FLAG87f1c2bfb [2022-11-18 19:49:34,512 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/data/5e94cfcc5/801cac3e04a34424a485951ed3ba8eeb [2022-11-18 19:49:34,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:49:34,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:49:34,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:34,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:49:34,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:49:34,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438ebf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34, skipping insertion in model container [2022-11-18 19:49:34,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:49:34,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:49:34,752 WARN L234 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_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2022-11-18 19:49:34,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:34,838 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:49:34,849 WARN L234 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_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2022-11-18 19:49:34,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:34,904 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:49:34,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34 WrapperNode [2022-11-18 19:49:34,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:34,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:34,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:49:34,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:49:34,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,958 INFO L138 Inliner]: procedures = 38, calls = 45, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 435 [2022-11-18 19:49:34,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:34,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:49:34,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:49:34,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:49:34,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:34,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:35,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:35,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:35,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:35,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:49:35,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:49:35,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:49:35,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:49:35,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (1/1) ... [2022-11-18 19:49:35,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:35,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:35,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:49:35,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4a1b50-d55d-41d0-b26a-3559fdc544f5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:49:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:49:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 19:49:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 19:49:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 19:49:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 19:49:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 19:49:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 19:49:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 19:49:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 19:49:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 19:49:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 19:49:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:49:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 19:49:35,115 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 19:49:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:49:35,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:49:35,212 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:49:35,214 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:49:35,876 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:49:35,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:49:35,893 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-18 19:49:35,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:35 BoogieIcfgContainer [2022-11-18 19:49:35,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:49:35,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:49:35,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:49:35,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:49:35,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:49:34" (1/3) ... [2022-11-18 19:49:35,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a115a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:35, skipping insertion in model container [2022-11-18 19:49:35,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:34" (2/3) ... [2022-11-18 19:49:35,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a115a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:35, skipping insertion in model container [2022-11-18 19:49:35,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:35" (3/3) ... [2022-11-18 19:49:35,914 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.c [2022-11-18 19:49:35,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:49:35,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:49:36,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:36,039 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;@75e46cbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:36,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:49:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 177 states have (on average 1.6214689265536724) internal successors, (287), 179 states have internal predecessors, (287), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:49:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:36,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:36,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:36,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1431612538, now seen corresponding path program 1 times [2022-11-18 19:49:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:36,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506074342] [2022-11-18 19:49:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:36,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:36,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506074342] [2022-11-18 19:49:36,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506074342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:36,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:36,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:49:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457236705] [2022-11-18 19:49:36,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:36,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:49:36,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:49:36,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:49:36,661 INFO L87 Difference]: Start difference. First operand has 203 states, 177 states have (on average 1.6214689265536724) internal successors, (287), 179 states have internal predecessors, (287), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:37,827 INFO L93 Difference]: Finished difference Result 462 states and 744 transitions. [2022-11-18 19:49:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:49:37,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:37,841 INFO L225 Difference]: With dead ends: 462 [2022-11-18 19:49:37,841 INFO L226 Difference]: Without dead ends: 261 [2022-11-18 19:49:37,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:49:37,853 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 499 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:37,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 400 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:49:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-18 19:49:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 198. [2022-11-18 19:49:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 173 states have (on average 1.5144508670520231) internal successors, (262), 174 states have internal predecessors, (262), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:49:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 298 transitions. [2022-11-18 19:49:37,951 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 298 transitions. Word has length 103 [2022-11-18 19:49:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:37,952 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 298 transitions. [2022-11-18 19:49:37,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:37,953 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 298 transitions. [2022-11-18 19:49:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:37,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:37,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:37,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:49:37,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash -374881336, now seen corresponding path program 1 times [2022-11-18 19:49:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:37,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920546682] [2022-11-18 19:49:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:38,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:38,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920546682] [2022-11-18 19:49:38,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920546682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:38,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:38,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:49:38,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601039456] [2022-11-18 19:49:38,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:38,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:49:38,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:49:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:49:38,371 INFO L87 Difference]: Start difference. First operand 198 states and 298 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:39,897 INFO L93 Difference]: Finished difference Result 697 states and 1083 transitions. [2022-11-18 19:49:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:49:39,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:39,907 INFO L225 Difference]: With dead ends: 697 [2022-11-18 19:49:39,907 INFO L226 Difference]: Without dead ends: 512 [2022-11-18 19:49:39,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:49:39,910 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 730 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:39,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 682 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:49:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-18 19:49:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 386. [2022-11-18 19:49:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 341 states have (on average 1.5249266862170088) internal successors, (520), 343 states have internal predecessors, (520), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-11-18 19:49:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 585 transitions. [2022-11-18 19:49:39,998 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 585 transitions. Word has length 103 [2022-11-18 19:49:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:39,999 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 585 transitions. [2022-11-18 19:49:40,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 585 transitions. [2022-11-18 19:49:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:40,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:40,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:40,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:49:40,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash -81592503, now seen corresponding path program 1 times [2022-11-18 19:49:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:40,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473770690] [2022-11-18 19:49:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:40,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:40,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:40,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473770690] [2022-11-18 19:49:40,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473770690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:40,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:40,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:40,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140112593] [2022-11-18 19:49:40,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:40,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:40,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:40,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:40,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:40,338 INFO L87 Difference]: Start difference. First operand 386 states and 585 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:42,930 INFO L93 Difference]: Finished difference Result 1221 states and 1876 transitions. [2022-11-18 19:49:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:49:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:42,936 INFO L225 Difference]: With dead ends: 1221 [2022-11-18 19:49:42,937 INFO L226 Difference]: Without dead ends: 848 [2022-11-18 19:49:42,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:49:42,939 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 787 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:42,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1265 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:49:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-18 19:49:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 562. [2022-11-18 19:49:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 497 states have (on average 1.517102615694165) internal successors, (754), 500 states have internal predecessors, (754), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-18 19:49:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 847 transitions. [2022-11-18 19:49:43,004 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 847 transitions. Word has length 103 [2022-11-18 19:49:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:43,005 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 847 transitions. [2022-11-18 19:49:43,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 847 transitions. [2022-11-18 19:49:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:43,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:43,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:49:43,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -667868725, now seen corresponding path program 1 times [2022-11-18 19:49:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:43,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619353053] [2022-11-18 19:49:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:43,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:43,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619353053] [2022-11-18 19:49:43,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619353053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:43,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:43,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015030109] [2022-11-18 19:49:43,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:43,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:43,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:43,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:43,211 INFO L87 Difference]: Start difference. First operand 562 states and 847 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:45,651 INFO L93 Difference]: Finished difference Result 1875 states and 2872 transitions. [2022-11-18 19:49:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:49:45,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:45,659 INFO L225 Difference]: With dead ends: 1875 [2022-11-18 19:49:45,660 INFO L226 Difference]: Without dead ends: 1326 [2022-11-18 19:49:45,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:49:45,663 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 785 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:45,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1263 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:49:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-11-18 19:49:45,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 915. [2022-11-18 19:49:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 810 states have (on average 1.5098765432098766) internal successors, (1223), 815 states have internal predecessors, (1223), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-11-18 19:49:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1376 transitions. [2022-11-18 19:49:45,773 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1376 transitions. Word has length 103 [2022-11-18 19:49:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:45,774 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1376 transitions. [2022-11-18 19:49:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1376 transitions. [2022-11-18 19:49:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:45,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:45,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:45,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:49:45,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:45,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1668523785, now seen corresponding path program 1 times [2022-11-18 19:49:45,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:45,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697421763] [2022-11-18 19:49:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:45,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:45,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:45,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:45,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:45,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:45,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697421763] [2022-11-18 19:49:45,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697421763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:45,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:45,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484836528] [2022-11-18 19:49:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:45,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:45,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:45,951 INFO L87 Difference]: Start difference. First operand 915 states and 1376 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:48,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:48,375 INFO L93 Difference]: Finished difference Result 3138 states and 4789 transitions. [2022-11-18 19:49:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:49:48,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:48,388 INFO L225 Difference]: With dead ends: 3138 [2022-11-18 19:49:48,388 INFO L226 Difference]: Without dead ends: 2236 [2022-11-18 19:49:48,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:49:48,401 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 781 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:48,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1263 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:49:48,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-11-18 19:49:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1622. [2022-11-18 19:49:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1437 states have (on average 1.5038274182324287) internal successors, (2161), 1446 states have internal predecessors, (2161), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-11-18 19:49:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2440 transitions. [2022-11-18 19:49:48,587 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2440 transitions. Word has length 103 [2022-11-18 19:49:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:48,587 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2440 transitions. [2022-11-18 19:49:48,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2440 transitions. [2022-11-18 19:49:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:48,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:48,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:48,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:49:48,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:48,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:48,593 INFO L85 PathProgramCache]: Analyzing trace with hash -749960693, now seen corresponding path program 1 times [2022-11-18 19:49:48,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:48,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626806259] [2022-11-18 19:49:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:48,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:48,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:48,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626806259] [2022-11-18 19:49:48,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626806259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:48,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:48,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:48,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350500121] [2022-11-18 19:49:48,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:48,834 INFO L87 Difference]: Start difference. First operand 1622 states and 2440 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:51,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:51,334 INFO L93 Difference]: Finished difference Result 5663 states and 8639 transitions. [2022-11-18 19:49:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:49:51,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:51,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:51,355 INFO L225 Difference]: With dead ends: 5663 [2022-11-18 19:49:51,355 INFO L226 Difference]: Without dead ends: 4054 [2022-11-18 19:49:51,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:49:51,363 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 783 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:51,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1263 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:49:51,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2022-11-18 19:49:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 3041. [2022-11-18 19:49:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2696 states have (on average 1.4996290801186944) internal successors, (4043), 2713 states have internal predecessors, (4043), 226 states have call successors, (226), 102 states have call predecessors, (226), 118 states have return successors, (323), 241 states have call predecessors, (323), 226 states have call successors, (323) [2022-11-18 19:49:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4592 transitions. [2022-11-18 19:49:51,690 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4592 transitions. Word has length 103 [2022-11-18 19:49:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:51,691 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 4592 transitions. [2022-11-18 19:49:51,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4592 transitions. [2022-11-18 19:49:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:51,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:51,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:51,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:49:51,697 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1665875657, now seen corresponding path program 1 times [2022-11-18 19:49:51,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:51,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112304107] [2022-11-18 19:49:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:51,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:51,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:51,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:51,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112304107] [2022-11-18 19:49:51,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112304107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:51,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:51,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:51,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731762445] [2022-11-18 19:49:51,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:51,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:51,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:51,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:51,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:51,885 INFO L87 Difference]: Start difference. First operand 3041 states and 4592 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:55,077 INFO L93 Difference]: Finished difference Result 11785 states and 17971 transitions. [2022-11-18 19:49:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:49:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:55,122 INFO L225 Difference]: With dead ends: 11785 [2022-11-18 19:49:55,122 INFO L226 Difference]: Without dead ends: 8757 [2022-11-18 19:49:55,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:49:55,133 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 822 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:55,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1253 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 19:49:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8757 states. [2022-11-18 19:49:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8757 to 5845. [2022-11-18 19:49:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5196 states have (on average 1.5032717474980755) internal successors, (7811), 5229 states have internal predecessors, (7811), 418 states have call successors, (418), 198 states have call predecessors, (418), 230 states have return successors, (693), 449 states have call predecessors, (693), 418 states have call successors, (693) [2022-11-18 19:49:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8922 transitions. [2022-11-18 19:49:55,884 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 8922 transitions. Word has length 103 [2022-11-18 19:49:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:55,885 INFO L495 AbstractCegarLoop]: Abstraction has 5845 states and 8922 transitions. [2022-11-18 19:49:55,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 8922 transitions. [2022-11-18 19:49:55,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:49:55,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:55,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:49:55,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1062333689, now seen corresponding path program 1 times [2022-11-18 19:49:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:55,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194679594] [2022-11-18 19:49:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:49:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:49:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:49:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:49:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:56,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:56,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194679594] [2022-11-18 19:49:56,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194679594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:56,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:56,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:56,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587437532] [2022-11-18 19:49:56,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:56,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:56,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:56,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:56,069 INFO L87 Difference]: Start difference. First operand 5845 states and 8922 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:49:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:59,846 INFO L93 Difference]: Finished difference Result 22335 states and 34343 transitions. [2022-11-18 19:49:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:49:59,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:49:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:59,925 INFO L225 Difference]: With dead ends: 22335 [2022-11-18 19:49:59,925 INFO L226 Difference]: Without dead ends: 16503 [2022-11-18 19:49:59,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:49:59,950 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 968 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:59,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 849 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:49:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16503 states. [2022-11-18 19:50:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16503 to 11450. [2022-11-18 19:50:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11450 states, 10209 states have (on average 1.5058281908120286) internal successors, (15373), 10274 states have internal predecessors, (15373), 786 states have call successors, (786), 390 states have call predecessors, (786), 454 states have return successors, (1579), 849 states have call predecessors, (1579), 786 states have call successors, (1579) [2022-11-18 19:50:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11450 states to 11450 states and 17738 transitions. [2022-11-18 19:50:01,424 INFO L78 Accepts]: Start accepts. Automaton has 11450 states and 17738 transitions. Word has length 103 [2022-11-18 19:50:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:01,425 INFO L495 AbstractCegarLoop]: Abstraction has 11450 states and 17738 transitions. [2022-11-18 19:50:01,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:50:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11450 states and 17738 transitions. [2022-11-18 19:50:01,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:50:01,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:01,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:01,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:50:01,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2120171767, now seen corresponding path program 1 times [2022-11-18 19:50:01,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:01,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894729749] [2022-11-18 19:50:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:01,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:50:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:01,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:50:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:50:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:50:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:50:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:01,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:01,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894729749] [2022-11-18 19:50:01,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894729749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:01,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:01,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:50:01,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202484485] [2022-11-18 19:50:01,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:01,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:50:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:01,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:50:01,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:01,619 INFO L87 Difference]: Start difference. First operand 11450 states and 17738 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:50:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:06,623 INFO L93 Difference]: Finished difference Result 42890 states and 66837 transitions. [2022-11-18 19:50:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:50:06,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:50:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:06,755 INFO L225 Difference]: With dead ends: 42890 [2022-11-18 19:50:06,755 INFO L226 Difference]: Without dead ends: 31453 [2022-11-18 19:50:06,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:50:06,799 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 873 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:06,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1253 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:50:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31453 states. [2022-11-18 19:50:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31453 to 22627. [2022-11-18 19:50:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22627 states, 20234 states have (on average 1.5086982307008006) internal successors, (30527), 20363 states have internal predecessors, (30527), 1490 states have call successors, (1490), 774 states have call predecessors, (1490), 902 states have return successors, (3805), 1617 states have call predecessors, (3805), 1490 states have call successors, (3805) [2022-11-18 19:50:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22627 states to 22627 states and 35822 transitions. [2022-11-18 19:50:09,583 INFO L78 Accepts]: Start accepts. Automaton has 22627 states and 35822 transitions. Word has length 103 [2022-11-18 19:50:09,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:09,584 INFO L495 AbstractCegarLoop]: Abstraction has 22627 states and 35822 transitions. [2022-11-18 19:50:09,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:50:09,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22627 states and 35822 transitions. [2022-11-18 19:50:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:50:09,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:09,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:09,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:50:09,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:09,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:09,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1032293063, now seen corresponding path program 1 times [2022-11-18 19:50:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:09,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719138702] [2022-11-18 19:50:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:09,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:50:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:50:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:50:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:50:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:50:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:09,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719138702] [2022-11-18 19:50:09,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719138702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:09,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:09,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:50:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526655629] [2022-11-18 19:50:09,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:09,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:50:09,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:50:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:09,820 INFO L87 Difference]: Start difference. First operand 22627 states and 35822 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:50:18,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:18,281 INFO L93 Difference]: Finished difference Result 82817 states and 131883 transitions. [2022-11-18 19:50:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:50:18,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:50:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:18,523 INFO L225 Difference]: With dead ends: 82817 [2022-11-18 19:50:18,523 INFO L226 Difference]: Without dead ends: 60203 [2022-11-18 19:50:18,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:50:18,605 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 789 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:18,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1253 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:50:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60203 states. [2022-11-18 19:50:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60203 to 44916. [2022-11-18 19:50:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44916 states, 40283 states have (on average 1.5117295136906388) internal successors, (60897), 40540 states have internal predecessors, (60897), 2834 states have call successors, (2834), 1542 states have call predecessors, (2834), 1798 states have return successors, (9651), 3089 states have call predecessors, (9651), 2834 states have call successors, (9651) [2022-11-18 19:50:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44916 states to 44916 states and 73382 transitions. [2022-11-18 19:50:23,709 INFO L78 Accepts]: Start accepts. Automaton has 44916 states and 73382 transitions. Word has length 103 [2022-11-18 19:50:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:23,711 INFO L495 AbstractCegarLoop]: Abstraction has 44916 states and 73382 transitions. [2022-11-18 19:50:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:50:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 44916 states and 73382 transitions. [2022-11-18 19:50:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:50:23,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:23,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:23,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:50:23,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1272532809, now seen corresponding path program 1 times [2022-11-18 19:50:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:23,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077309386] [2022-11-18 19:50:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:50:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:50:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:50:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:50:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:50:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:23,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077309386] [2022-11-18 19:50:23,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077309386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:23,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:23,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:50:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670218633] [2022-11-18 19:50:23,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:23,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:50:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:50:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:23,934 INFO L87 Difference]: Start difference. First operand 44916 states and 73382 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:50:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:30,905 INFO L93 Difference]: Finished difference Result 101422 states and 170345 transitions. [2022-11-18 19:50:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:50:30,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-11-18 19:50:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:31,348 INFO L225 Difference]: With dead ends: 101422 [2022-11-18 19:50:31,348 INFO L226 Difference]: Without dead ends: 56519 [2022-11-18 19:50:31,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:50:31,432 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 630 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:31,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 523 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:50:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56519 states.