./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R --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 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e --- 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-38b53e6 [2022-11-25 17:13:16,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:13:16,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:13:16,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:13:16,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:13:16,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:13:16,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:13:16,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:13:16,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:13:16,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:13:16,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:13:16,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:13:16,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:13:16,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:13:16,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:13:16,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:13:16,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:13:16,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:13:16,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:13:16,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:13:16,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:13:16,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:13:16,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:13:16,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:13:16,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:13:16,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:13:16,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:13:16,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:13:16,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:13:16,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:13:16,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:13:16,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:13:16,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:13:16,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:13:16,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:13:16,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:13:16,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:13:16,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:13:16,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:13:16,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:13:16,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:13:16,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:13:17,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:13:17,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:13:17,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:13:17,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:13:17,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:13:17,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:13:17,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:13:17,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:13:17,008 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:13:17,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:13:17,009 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:13:17,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:13:17,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:13:17,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:13:17,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:13:17,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:13:17,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:13:17,011 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:13:17,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:13:17,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:13:17,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:13:17,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:13:17,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:13:17,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:13:17,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:17,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:13:17,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:13:17,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:13:17,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:13:17,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:13:17,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:13:17,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:13:17,015 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:13:17,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:13:17,015 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e [2022-11-25 17:13:17,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:13:17,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:13:17,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:13:17,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:13:17,331 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:13:17,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2022-11-25 17:13:20,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:13:21,444 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:13:21,445 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2022-11-25 17:13:21,528 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/data/ddae27301/dcb0490bcc594bfcbba05b636d69e921/FLAGdc1cfd83b [2022-11-25 17:13:21,552 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/data/ddae27301/dcb0490bcc594bfcbba05b636d69e921 [2022-11-25 17:13:21,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:13:21,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:13:21,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:21,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:13:21,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:13:21,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:21" (1/1) ... [2022-11-25 17:13:21,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781dfe7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:21, skipping insertion in model container [2022-11-25 17:13:21,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:21" (1/1) ... [2022-11-25 17:13:21,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:13:21,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:13:24,364 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2022-11-25 17:13:24,396 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2022-11-25 17:13:24,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:24,871 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:13:26,232 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2022-11-25 17:13:26,237 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2022-11-25 17:13:26,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:26,392 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:13:26,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26 WrapperNode [2022-11-25 17:13:26,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:26,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:26,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:13:26,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:13:26,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:26,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:26,987 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2022-11-25 17:13:26,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:26,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:13:26,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:13:26,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:13:27,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,438 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:13:27,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:13:27,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:13:27,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:13:27,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (1/1) ... [2022-11-25 17:13:27,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:27,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:13:27,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:13:27,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0db61092-778e-449d-a242-93601b796a10/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:13:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:13:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 17:13:27,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 17:13:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 17:13:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 17:13:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 17:13:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 17:13:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 17:13:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 17:13:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 17:13:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 17:13:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 17:13:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 17:13:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 17:13:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 17:13:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:13:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:13:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:13:28,036 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:13:28,038 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:13:37,757 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:13:37,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:13:37,781 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-25 17:13:37,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:37 BoogieIcfgContainer [2022-11-25 17:13:37,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:13:37,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:13:37,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:13:37,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:13:37,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:13:21" (1/3) ... [2022-11-25 17:13:37,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cddf374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:37, skipping insertion in model container [2022-11-25 17:13:37,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:26" (2/3) ... [2022-11-25 17:13:37,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cddf374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:37, skipping insertion in model container [2022-11-25 17:13:37,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:37" (3/3) ... [2022-11-25 17:13:37,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.15.cil.c [2022-11-25 17:13:37,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:13:37,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:13:37,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:13:37,914 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;@10a53040, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:13:37,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:13:37,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-25 17:13:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:13:37,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:37,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:37,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:37,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2022-11-25 17:13:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:37,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679273663] [2022-11-25 17:13:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:37,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:38,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:13:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:13:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:13:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:13:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:13:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:38,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679273663] [2022-11-25 17:13:38,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679273663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:38,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:38,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:13:38,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739297244] [2022-11-25 17:13:38,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:38,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:38,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:38,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:38,895 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:42,100 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2022-11-25 17:13:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:42,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:13:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:42,148 INFO L225 Difference]: With dead ends: 5336 [2022-11-25 17:13:42,148 INFO L226 Difference]: Without dead ends: 2681 [2022-11-25 17:13:42,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:13:42,170 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 1121 mSDsluCounter, 12501 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 16900 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:42,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 16900 Invalid, 1176 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [62 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 17:13:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-11-25 17:13:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2022-11-25 17:13:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-25 17:13:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2022-11-25 17:13:42,440 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2022-11-25 17:13:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:42,441 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2022-11-25 17:13:42,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2022-11-25 17:13:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:13:42,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:42,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:42,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:13:42,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:42,461 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2022-11-25 17:13:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:42,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174833476] [2022-11-25 17:13:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:13:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:13:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:42,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:13:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:13:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:13:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174833476] [2022-11-25 17:13:42,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174833476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:42,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:42,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:13:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833227564] [2022-11-25 17:13:42,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:42,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:42,888 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:46,131 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2022-11-25 17:13:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:46,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:13:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:46,149 INFO L225 Difference]: With dead ends: 3071 [2022-11-25 17:13:46,149 INFO L226 Difference]: Without dead ends: 2681 [2022-11-25 17:13:46,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:13:46,156 INFO L413 NwaCegarLoop]: 4329 mSDtfsCounter, 1107 mSDsluCounter, 12298 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 16627 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:46,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 16627 Invalid, 1175 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [62 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 17:13:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-11-25 17:13:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2022-11-25 17:13:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-25 17:13:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2022-11-25 17:13:46,303 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2022-11-25 17:13:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:46,304 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2022-11-25 17:13:46,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2022-11-25 17:13:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:13:46,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:46,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:46,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:13:46,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2022-11-25 17:13:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:46,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607753075] [2022-11-25 17:13:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:13:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:46,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:13:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:13:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:13:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:13:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:46,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:46,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607753075] [2022-11-25 17:13:46,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607753075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:46,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:46,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:13:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112429978] [2022-11-25 17:13:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:13:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:13:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:13:46,712 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:51,932 INFO L93 Difference]: Finished difference Result 3626 states and 6383 transitions. [2022-11-25 17:13:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:13:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:13:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:51,950 INFO L225 Difference]: With dead ends: 3626 [2022-11-25 17:13:51,950 INFO L226 Difference]: Without dead ends: 3240 [2022-11-25 17:13:51,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:13:51,965 INFO L413 NwaCegarLoop]: 4334 mSDtfsCounter, 5644 mSDsluCounter, 12901 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 17235 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:51,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5664 Valid, 17235 Invalid, 2673 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [120 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 17:13:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2022-11-25 17:13:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2933. [2022-11-25 17:13:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2867 states have (on average 1.795256365538891) internal successors, (5147), 2871 states have internal predecessors, (5147), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-11-25 17:13:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 5250 transitions. [2022-11-25 17:13:52,161 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 5250 transitions. Word has length 190 [2022-11-25 17:13:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:52,162 INFO L495 AbstractCegarLoop]: Abstraction has 2933 states and 5250 transitions. [2022-11-25 17:13:52,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 5250 transitions. [2022-11-25 17:13:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:13:52,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:52,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:13:52,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1773060918, now seen corresponding path program 1 times [2022-11-25 17:13:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:52,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40135864] [2022-11-25 17:13:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:13:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:13:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:13:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:13:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:13:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:52,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:52,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40135864] [2022-11-25 17:13:52,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40135864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:52,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:52,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:13:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866231238] [2022-11-25 17:13:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:13:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:13:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:13:52,564 INFO L87 Difference]: Start difference. First operand 2933 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:58,768 INFO L93 Difference]: Finished difference Result 4610 states and 7978 transitions. [2022-11-25 17:13:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:13:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:13:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:58,794 INFO L225 Difference]: With dead ends: 4610 [2022-11-25 17:13:58,795 INFO L226 Difference]: Without dead ends: 3819 [2022-11-25 17:13:58,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:13:58,810 INFO L413 NwaCegarLoop]: 4558 mSDtfsCounter, 5689 mSDsluCounter, 17876 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5709 SdHoareTripleChecker+Valid, 22434 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:58,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5709 Valid, 22434 Invalid, 3929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3860 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 17:13:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2022-11-25 17:13:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3309. [2022-11-25 17:13:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3214 states have (on average 1.7710018668326073) internal successors, (5692), 3219 states have internal predecessors, (5692), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-11-25 17:13:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 5841 transitions. [2022-11-25 17:13:59,170 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 5841 transitions. Word has length 190 [2022-11-25 17:13:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:59,170 INFO L495 AbstractCegarLoop]: Abstraction has 3309 states and 5841 transitions. [2022-11-25 17:13:59,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:13:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 5841 transitions. [2022-11-25 17:13:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:13:59,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:59,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:59,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:13:59,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:59,177 INFO L85 PathProgramCache]: Analyzing trace with hash -150189512, now seen corresponding path program 1 times [2022-11-25 17:13:59,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:59,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225630034] [2022-11-25 17:13:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:13:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:13:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:13:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:13:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:13:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:59,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:59,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225630034] [2022-11-25 17:13:59,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225630034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:59,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:59,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:13:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125045573] [2022-11-25 17:13:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:13:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:13:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:13:59,653 INFO L87 Difference]: Start difference. First operand 3309 states and 5841 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:06,034 INFO L93 Difference]: Finished difference Result 6060 states and 10309 transitions. [2022-11-25 17:14:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:14:06,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:14:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:06,055 INFO L225 Difference]: With dead ends: 6060 [2022-11-25 17:14:06,055 INFO L226 Difference]: Without dead ends: 4893 [2022-11-25 17:14:06,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:14:06,061 INFO L413 NwaCegarLoop]: 4556 mSDtfsCounter, 5683 mSDsluCounter, 17876 mSDsCounter, 0 mSdLazyCounter, 3839 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5703 SdHoareTripleChecker+Valid, 22432 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:06,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5703 Valid, 22432 Invalid, 3910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 3839 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 17:14:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2022-11-25 17:14:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4065. [2022-11-25 17:14:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 3912 states have (on average 1.7354294478527608) internal successors, (6789), 3919 states have internal predecessors, (6789), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-11-25 17:14:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 7034 transitions. [2022-11-25 17:14:06,412 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 7034 transitions. Word has length 190 [2022-11-25 17:14:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:06,413 INFO L495 AbstractCegarLoop]: Abstraction has 4065 states and 7034 transitions. [2022-11-25 17:14:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 7034 transitions. [2022-11-25 17:14:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:14:06,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:06,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:14:06,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash 348367290, now seen corresponding path program 1 times [2022-11-25 17:14:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:06,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868707406] [2022-11-25 17:14:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:14:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:14:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:14:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:06,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:14:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:06,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:06,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868707406] [2022-11-25 17:14:06,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868707406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:06,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:06,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:14:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871197964] [2022-11-25 17:14:06,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:06,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:06,892 INFO L87 Difference]: Start difference. First operand 4065 states and 7034 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:13,466 INFO L93 Difference]: Finished difference Result 8854 states and 14770 transitions. [2022-11-25 17:14:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:14:13,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:14:13,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:13,500 INFO L225 Difference]: With dead ends: 8854 [2022-11-25 17:14:13,500 INFO L226 Difference]: Without dead ends: 6931 [2022-11-25 17:14:13,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:14:13,510 INFO L413 NwaCegarLoop]: 4556 mSDtfsCounter, 5682 mSDsluCounter, 17876 mSDsCounter, 0 mSdLazyCounter, 3826 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5702 SdHoareTripleChecker+Valid, 22432 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:13,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5702 Valid, 22432 Invalid, 3897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 3826 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 17:14:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2022-11-25 17:14:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 5578. [2022-11-25 17:14:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5309 states have (on average 1.6920323978150311) internal successors, (8983), 5320 states have internal predecessors, (8983), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-11-25 17:14:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 9426 transitions. [2022-11-25 17:14:14,093 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 9426 transitions. Word has length 190 [2022-11-25 17:14:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:14,095 INFO L495 AbstractCegarLoop]: Abstraction has 5578 states and 9426 transitions. [2022-11-25 17:14:14,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 9426 transitions. [2022-11-25 17:14:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:14:14,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:14,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:14,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:14:14,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 918639096, now seen corresponding path program 1 times [2022-11-25 17:14:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:14,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261552877] [2022-11-25 17:14:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:14,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:14:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:14:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:14:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:14:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:14,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:14,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261552877] [2022-11-25 17:14:14,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261552877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:14,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:14,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:14:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910381565] [2022-11-25 17:14:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:14,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:14,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:14,470 INFO L87 Difference]: Start difference. First operand 5578 states and 9426 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:21,585 INFO L93 Difference]: Finished difference Result 14441 states and 23708 transitions. [2022-11-25 17:14:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:14:21,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:14:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:21,625 INFO L225 Difference]: With dead ends: 14441 [2022-11-25 17:14:21,625 INFO L226 Difference]: Without dead ends: 11005 [2022-11-25 17:14:21,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:14:21,640 INFO L413 NwaCegarLoop]: 4556 mSDtfsCounter, 5681 mSDsluCounter, 17876 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5701 SdHoareTripleChecker+Valid, 22432 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:21,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5701 Valid, 22432 Invalid, 3884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 3813 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 17:14:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11005 states. [2022-11-25 17:14:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11005 to 8611. [2022-11-25 17:14:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8611 states, 8110 states have (on average 1.6499383477188656) internal successors, (13381), 8129 states have internal predecessors, (13381), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-11-25 17:14:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8611 states to 8611 states and 14238 transitions. [2022-11-25 17:14:22,839 INFO L78 Accepts]: Start accepts. Automaton has 8611 states and 14238 transitions. Word has length 190 [2022-11-25 17:14:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:22,840 INFO L495 AbstractCegarLoop]: Abstraction has 8611 states and 14238 transitions. [2022-11-25 17:14:22,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8611 states and 14238 transitions. [2022-11-25 17:14:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:14:22,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:22,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:22,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:14:22,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:22,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:22,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1972459014, now seen corresponding path program 1 times [2022-11-25 17:14:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:22,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458890675] [2022-11-25 17:14:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:14:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:14:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:23,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:14:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:14:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:23,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458890675] [2022-11-25 17:14:23,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458890675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:23,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:23,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:14:23,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490573867] [2022-11-25 17:14:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:23,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:23,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:23,167 INFO L87 Difference]: Start difference. First operand 8611 states and 14238 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:30,696 INFO L93 Difference]: Finished difference Result 25616 states and 41646 transitions. [2022-11-25 17:14:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:14:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:14:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:30,765 INFO L225 Difference]: With dead ends: 25616 [2022-11-25 17:14:30,765 INFO L226 Difference]: Without dead ends: 19147 [2022-11-25 17:14:30,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:14:30,796 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 5794 mSDsluCounter, 17172 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5814 SdHoareTripleChecker+Valid, 21511 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:30,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5814 Valid, 21511 Invalid, 3494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 17:14:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2022-11-25 17:14:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 14692. [2022-11-25 17:14:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14692 states, 13727 states have (on average 1.6171778247249946) internal successors, (22199), 13762 states have internal predecessors, (22199), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-11-25 17:14:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14692 states to 14692 states and 23938 transitions. [2022-11-25 17:14:32,810 INFO L78 Accepts]: Start accepts. Automaton has 14692 states and 23938 transitions. Word has length 190 [2022-11-25 17:14:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:32,811 INFO L495 AbstractCegarLoop]: Abstraction has 14692 states and 23938 transitions. [2022-11-25 17:14:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14692 states and 23938 transitions. [2022-11-25 17:14:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:14:32,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:32,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:32,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:14:32,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:32,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1536510392, now seen corresponding path program 1 times [2022-11-25 17:14:32,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:32,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166976249] [2022-11-25 17:14:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:32,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:14:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:14:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:14:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:14:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:33,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166976249] [2022-11-25 17:14:33,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166976249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:33,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:33,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:14:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501600800] [2022-11-25 17:14:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:33,130 INFO L87 Difference]: Start difference. First operand 14692 states and 23938 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:38,461 INFO L93 Difference]: Finished difference Result 31976 states and 52109 transitions. [2022-11-25 17:14:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:14:38,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:14:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:38,534 INFO L225 Difference]: With dead ends: 31976 [2022-11-25 17:14:38,534 INFO L226 Difference]: Without dead ends: 19426 [2022-11-25 17:14:38,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:14:38,582 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 5369 mSDsluCounter, 12675 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 16957 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:38,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5390 Valid, 16957 Invalid, 1875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 17:14:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19426 states. [2022-11-25 17:14:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19426 to 14692. [2022-11-25 17:14:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14692 states, 13727 states have (on average 1.6147738034530488) internal successors, (22166), 13762 states have internal predecessors, (22166), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-11-25 17:14:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14692 states to 14692 states and 23905 transitions. [2022-11-25 17:14:40,711 INFO L78 Accepts]: Start accepts. Automaton has 14692 states and 23905 transitions. Word has length 190 [2022-11-25 17:14:40,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:40,712 INFO L495 AbstractCegarLoop]: Abstraction has 14692 states and 23905 transitions. [2022-11-25 17:14:40,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 14692 states and 23905 transitions. [2022-11-25 17:14:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:14:40,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:40,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:40,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:14:40,726 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:40,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2091075014, now seen corresponding path program 1 times [2022-11-25 17:14:40,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:40,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113318257] [2022-11-25 17:14:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:40,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:14:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:14:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:14:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:14:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:41,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:41,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113318257] [2022-11-25 17:14:41,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113318257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:41,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:41,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:14:41,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330439655] [2022-11-25 17:14:41,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:41,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:41,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:41,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:41,073 INFO L87 Difference]: Start difference. First operand 14692 states and 23905 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:51,812 INFO L93 Difference]: Finished difference Result 47933 states and 77484 transitions. [2022-11-25 17:14:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:14:51,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:14:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:51,970 INFO L225 Difference]: With dead ends: 47933 [2022-11-25 17:14:51,970 INFO L226 Difference]: Without dead ends: 35383 [2022-11-25 17:14:52,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:14:52,020 INFO L413 NwaCegarLoop]: 4556 mSDtfsCounter, 5672 mSDsluCounter, 17876 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5692 SdHoareTripleChecker+Valid, 22432 SdHoareTripleChecker+Invalid, 3833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:52,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5692 Valid, 22432 Invalid, 3833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 3762 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-25 17:14:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35383 states. [2022-11-25 17:14:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35383 to 26918. [2022-11-25 17:14:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26918 states, 25025 states have (on average 1.5924075924075924) internal successors, (39850), 25092 states have internal predecessors, (39850), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-11-25 17:14:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26918 states to 26918 states and 43515 transitions. [2022-11-25 17:14:56,428 INFO L78 Accepts]: Start accepts. Automaton has 26918 states and 43515 transitions. Word has length 190 [2022-11-25 17:14:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:56,429 INFO L495 AbstractCegarLoop]: Abstraction has 26918 states and 43515 transitions. [2022-11-25 17:14:56,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:14:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 26918 states and 43515 transitions. [2022-11-25 17:14:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:14:56,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:56,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:56,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:14:56,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash 8663416, now seen corresponding path program 1 times [2022-11-25 17:14:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:56,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668739437] [2022-11-25 17:14:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:14:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:14:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:14:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:14:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:56,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668739437] [2022-11-25 17:14:56,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668739437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:56,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:56,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:14:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046379060] [2022-11-25 17:14:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:56,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:56,806 INFO L87 Difference]: Start difference. First operand 26918 states and 43515 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:15:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:15:14,425 INFO L93 Difference]: Finished difference Result 92637 states and 150036 transitions. [2022-11-25 17:15:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:15:14,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:15:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:15:14,766 INFO L225 Difference]: With dead ends: 92637 [2022-11-25 17:15:14,766 INFO L226 Difference]: Without dead ends: 67861 [2022-11-25 17:15:14,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:15:14,864 INFO L413 NwaCegarLoop]: 4556 mSDtfsCounter, 5677 mSDsluCounter, 17876 mSDsCounter, 0 mSdLazyCounter, 3744 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5697 SdHoareTripleChecker+Valid, 22432 SdHoareTripleChecker+Invalid, 3815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:15:14,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5697 Valid, 22432 Invalid, 3815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 3744 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 17:15:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67861 states. [2022-11-25 17:15:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67861 to 51431. [2022-11-25 17:15:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51431 states, 47682 states have (on average 1.57938005956126) internal successors, (75308), 47813 states have internal predecessors, (75308), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-11-25 17:15:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51431 states to 51431 states and 83311 transitions. [2022-11-25 17:15:22,845 INFO L78 Accepts]: Start accepts. Automaton has 51431 states and 83311 transitions. Word has length 190 [2022-11-25 17:15:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:15:22,846 INFO L495 AbstractCegarLoop]: Abstraction has 51431 states and 83311 transitions. [2022-11-25 17:15:22,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:15:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 51431 states and 83311 transitions. [2022-11-25 17:15:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 17:15:22,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:15:22,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:22,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:15:22,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:15:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash 353491578, now seen corresponding path program 1 times [2022-11-25 17:15:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:22,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026875171] [2022-11-25 17:15:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:15:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:15:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:15:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:15:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:15:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:15:23,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:23,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026875171] [2022-11-25 17:15:23,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026875171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:23,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:15:23,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:15:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602941220] [2022-11-25 17:15:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:23,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:15:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:15:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:15:23,402 INFO L87 Difference]: Start difference. First operand 51431 states and 83311 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:15:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:15:40,770 INFO L93 Difference]: Finished difference Result 118118 states and 193774 transitions. [2022-11-25 17:15:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:15:40,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-25 17:15:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:15:41,027 INFO L225 Difference]: With dead ends: 118118 [2022-11-25 17:15:41,028 INFO L226 Difference]: Without dead ends: 68829 [2022-11-25 17:15:41,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:15:41,175 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 5194 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5215 SdHoareTripleChecker+Valid, 21126 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:15:41,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5215 Valid, 21126 Invalid, 1973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 17:15:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68829 states.