./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- 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-5e519f3 [2022-11-02 20:04:24,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:04:24,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:04:24,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:04:24,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:04:24,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:04:24,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:04:24,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:04:24,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:04:24,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:04:24,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:04:24,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:04:24,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:04:24,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:04:24,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:04:24,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:04:24,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:04:24,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:04:24,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:04:24,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:04:24,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:04:24,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:04:24,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:04:24,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:04:24,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:04:24,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:04:24,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:04:24,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:04:24,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:04:24,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:04:24,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:04:24,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:04:24,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:04:24,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:04:24,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:04:24,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:04:24,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:04:24,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:04:24,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:04:24,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:04:24,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:04:24,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:04:24,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:04:24,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:04:24,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:04:24,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:04:24,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:04:24,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:04:24,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:04:24,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:04:24,614 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:04:24,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:04:24,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:04:24,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:04:24,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:04:24,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:04:24,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:04:24,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:04:24,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:04:24,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:04:24,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:04:24,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:04:24,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:04:24,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:04:24,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:04:24,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:04:24,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:04:24,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:04:24,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:04:24,621 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:04:24,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:04:24,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:04:24,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2022-11-02 20:04:24,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:04:25,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:04:25,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:04:25,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:04:25,011 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:04:25,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-02 20:04:25,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/data/97d9ff955/2bb99ba64fbd432f8a575cf6287cac16/FLAGc600f3536 [2022-11-02 20:04:26,108 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:04:26,109 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-02 20:04:26,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/data/97d9ff955/2bb99ba64fbd432f8a575cf6287cac16/FLAGc600f3536 [2022-11-02 20:04:26,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/data/97d9ff955/2bb99ba64fbd432f8a575cf6287cac16 [2022-11-02 20:04:26,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:04:26,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:04:26,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:04:26,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:04:26,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:04:26,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:04:26" (1/1) ... [2022-11-02 20:04:26,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5954bb16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:26, skipping insertion in model container [2022-11-02 20:04:26,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:04:26" (1/1) ... [2022-11-02 20:04:26,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:04:26,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:04:27,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2022-11-02 20:04:27,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:04:27,896 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:04:28,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2022-11-02 20:04:28,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:04:28,132 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:04:28,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28 WrapperNode [2022-11-02 20:04:28,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:04:28,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:04:28,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:04:28,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:04:28,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,235 INFO L138 Inliner]: procedures = 107, calls = 309, calls flagged for inlining = 47, calls inlined = 41, statements flattened = 760 [2022-11-02 20:04:28,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:04:28,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:04:28,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:04:28,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:04:28,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,338 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:04:28,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:04:28,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:04:28,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:04:28,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (1/1) ... [2022-11-02 20:04:28,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:04:28,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:04:28,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:04:28,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:04:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-02 20:04:28,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-02 20:04:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:04:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-02 20:04:28,469 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-02 20:04:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:04:28,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:04:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:04:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:04:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-02 20:04:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-02 20:04:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:04:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:04:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:04:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:04:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:04:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2022-11-02 20:04:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2022-11-02 20:04:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-02 20:04:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-02 20:04:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:04:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:04:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:04:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:04:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-02 20:04:28,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-02 20:04:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:04:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-02 20:04:28,474 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-02 20:04:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-02 20:04:28,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-02 20:04:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2022-11-02 20:04:28,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2022-11-02 20:04:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:04:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:04:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:04:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-02 20:04:28,476 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-02 20:04:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-02 20:04:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-02 20:04:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:04:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:04:28,966 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:04:28,975 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:04:29,127 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-02 20:04:29,993 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:04:30,003 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:04:30,004 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:04:30,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:04:30 BoogieIcfgContainer [2022-11-02 20:04:30,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:04:30,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:04:30,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:04:30,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:04:30,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:04:26" (1/3) ... [2022-11-02 20:04:30,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d37b1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:04:30, skipping insertion in model container [2022-11-02 20:04:30,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:28" (2/3) ... [2022-11-02 20:04:30,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d37b1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:04:30, skipping insertion in model container [2022-11-02 20:04:30,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:04:30" (3/3) ... [2022-11-02 20:04:30,018 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-02 20:04:30,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:04:30,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:04:30,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:04:30,133 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;@4d1bae7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:04:30,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:04:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 183 states have internal predecessors, (224), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-02 20:04:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:04:30,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:30,152 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] [2022-11-02 20:04:30,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1798989029, now seen corresponding path program 1 times [2022-11-02 20:04:30,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:30,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960181422] [2022-11-02 20:04:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:30,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:30,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:04:30,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:30,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960181422] [2022-11-02 20:04:30,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960181422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:30,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:30,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:04:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502367213] [2022-11-02 20:04:30,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:30,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:04:30,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:04:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:04:30,743 INFO L87 Difference]: Start difference. First operand has 231 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 183 states have internal predecessors, (224), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:04:31,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:31,309 INFO L93 Difference]: Finished difference Result 464 states and 628 transitions. [2022-11-02 20:04:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:04:31,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-11-02 20:04:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:31,326 INFO L225 Difference]: With dead ends: 464 [2022-11-02 20:04:31,326 INFO L226 Difference]: Without dead ends: 227 [2022-11-02 20:04:31,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:04:31,336 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 46 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:31,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 614 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:04:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-02 20:04:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2022-11-02 20:04:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 166 states have (on average 1.2771084337349397) internal successors, (212), 172 states have internal predecessors, (212), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-02 20:04:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 285 transitions. [2022-11-02 20:04:31,409 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 285 transitions. Word has length 32 [2022-11-02 20:04:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:31,410 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 285 transitions. [2022-11-02 20:04:31,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:04:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 285 transitions. [2022-11-02 20:04:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:04:31,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:31,414 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] [2022-11-02 20:04:31,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:04:31,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1376287203, now seen corresponding path program 1 times [2022-11-02 20:04:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:31,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713002078] [2022-11-02 20:04:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:31,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:04:31,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:31,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713002078] [2022-11-02 20:04:31,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713002078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:31,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:31,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:04:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535166891] [2022-11-02 20:04:31,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:31,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:31,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:31,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:31,690 INFO L87 Difference]: Start difference. First operand 220 states and 285 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:04:32,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:32,656 INFO L93 Difference]: Finished difference Result 638 states and 833 transitions. [2022-11-02 20:04:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:04:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-11-02 20:04:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:32,671 INFO L225 Difference]: With dead ends: 638 [2022-11-02 20:04:32,671 INFO L226 Difference]: Without dead ends: 423 [2022-11-02 20:04:32,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:32,675 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 300 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:32,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 807 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:04:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-02 20:04:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-11-02 20:04:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 309 states have (on average 1.2686084142394822) internal successors, (392), 317 states have internal predecessors, (392), 71 states have call successors, (71), 29 states have call predecessors, (71), 28 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-02 20:04:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 529 transitions. [2022-11-02 20:04:32,737 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 529 transitions. Word has length 32 [2022-11-02 20:04:32,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:32,737 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 529 transitions. [2022-11-02 20:04:32,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:04:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 529 transitions. [2022-11-02 20:04:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:04:32,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:32,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:32,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:04:32,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:32,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash 451634024, now seen corresponding path program 1 times [2022-11-02 20:04:32,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:32,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080605143] [2022-11-02 20:04:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:32,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:33,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:04:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:33,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080605143] [2022-11-02 20:04:33,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080605143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:33,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:33,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:04:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013537192] [2022-11-02 20:04:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:33,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:04:33,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:33,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:04:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:33,032 INFO L87 Difference]: Start difference. First operand 409 states and 529 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:04:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:33,962 INFO L93 Difference]: Finished difference Result 970 states and 1293 transitions. [2022-11-02 20:04:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:04:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2022-11-02 20:04:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:33,968 INFO L225 Difference]: With dead ends: 970 [2022-11-02 20:04:33,968 INFO L226 Difference]: Without dead ends: 576 [2022-11-02 20:04:33,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:04:33,971 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 641 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:33,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1214 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:04:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-02 20:04:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 412. [2022-11-02 20:04:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 312 states have (on average 1.2628205128205128) internal successors, (394), 320 states have internal predecessors, (394), 71 states have call successors, (71), 29 states have call predecessors, (71), 28 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-02 20:04:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 531 transitions. [2022-11-02 20:04:34,028 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 531 transitions. Word has length 55 [2022-11-02 20:04:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:34,028 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 531 transitions. [2022-11-02 20:04:34,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:04:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 531 transitions. [2022-11-02 20:04:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:04:34,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:34,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:04:34,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1188950696, now seen corresponding path program 1 times [2022-11-02 20:04:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:34,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770936492] [2022-11-02 20:04:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:34,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:04:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770936492] [2022-11-02 20:04:34,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770936492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:34,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:34,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:04:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267284897] [2022-11-02 20:04:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:34,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:34,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:34,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:34,424 INFO L87 Difference]: Start difference. First operand 412 states and 531 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:35,273 INFO L93 Difference]: Finished difference Result 1233 states and 1608 transitions. [2022-11-02 20:04:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:04:35,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-11-02 20:04:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:35,280 INFO L225 Difference]: With dead ends: 1233 [2022-11-02 20:04:35,281 INFO L226 Difference]: Without dead ends: 836 [2022-11-02 20:04:35,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:35,284 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 310 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:35,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 799 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:04:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-02 20:04:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 798. [2022-11-02 20:04:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 609 states have (on average 1.2594417077175697) internal successors, (767), 621 states have internal predecessors, (767), 134 states have call successors, (134), 55 states have call predecessors, (134), 54 states have return successors, (131), 129 states have call predecessors, (131), 129 states have call successors, (131) [2022-11-02 20:04:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1032 transitions. [2022-11-02 20:04:35,365 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1032 transitions. Word has length 55 [2022-11-02 20:04:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:35,366 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1032 transitions. [2022-11-02 20:04:35,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1032 transitions. [2022-11-02 20:04:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:04:35,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:35,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:04:35,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1797229676, now seen corresponding path program 1 times [2022-11-02 20:04:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:35,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462578749] [2022-11-02 20:04:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:35,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:35,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:35,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:04:35,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:35,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462578749] [2022-11-02 20:04:35,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462578749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:35,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:35,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:04:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401941167] [2022-11-02 20:04:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:35,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:35,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:35,726 INFO L87 Difference]: Start difference. First operand 798 states and 1032 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:36,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:36,240 INFO L93 Difference]: Finished difference Result 828 states and 1077 transitions. [2022-11-02 20:04:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:36,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-11-02 20:04:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:36,247 INFO L225 Difference]: With dead ends: 828 [2022-11-02 20:04:36,247 INFO L226 Difference]: Without dead ends: 825 [2022-11-02 20:04:36,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:36,249 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 267 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:36,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 577 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:04:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-02 20:04:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 797. [2022-11-02 20:04:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 609 states have (on average 1.257799671592775) internal successors, (766), 620 states have internal predecessors, (766), 133 states have call successors, (133), 55 states have call predecessors, (133), 54 states have return successors, (131), 129 states have call predecessors, (131), 129 states have call successors, (131) [2022-11-02 20:04:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1030 transitions. [2022-11-02 20:04:36,385 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1030 transitions. Word has length 56 [2022-11-02 20:04:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:36,386 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1030 transitions. [2022-11-02 20:04:36,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1030 transitions. [2022-11-02 20:04:36,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 20:04:36,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:36,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:36,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:04:36,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:36,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:36,394 INFO L85 PathProgramCache]: Analyzing trace with hash 120464171, now seen corresponding path program 1 times [2022-11-02 20:04:36,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:36,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841418270] [2022-11-02 20:04:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:04:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:36,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841418270] [2022-11-02 20:04:36,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841418270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:36,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:36,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:04:36,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635189779] [2022-11-02 20:04:36,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:36,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:36,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:36,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:36,634 INFO L87 Difference]: Start difference. First operand 797 states and 1030 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:37,116 INFO L93 Difference]: Finished difference Result 827 states and 1075 transitions. [2022-11-02 20:04:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-11-02 20:04:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:37,122 INFO L225 Difference]: With dead ends: 827 [2022-11-02 20:04:37,123 INFO L226 Difference]: Without dead ends: 824 [2022-11-02 20:04:37,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:37,128 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 264 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:37,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 573 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:04:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-11-02 20:04:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 796. [2022-11-02 20:04:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 609 states have (on average 1.2561576354679802) internal successors, (765), 619 states have internal predecessors, (765), 132 states have call successors, (132), 55 states have call predecessors, (132), 54 states have return successors, (131), 129 states have call predecessors, (131), 129 states have call successors, (131) [2022-11-02 20:04:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1028 transitions. [2022-11-02 20:04:37,269 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1028 transitions. Word has length 57 [2022-11-02 20:04:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:37,270 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1028 transitions. [2022-11-02 20:04:37,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1028 transitions. [2022-11-02 20:04:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:04:37,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:37,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:37,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:04:37,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -560563849, now seen corresponding path program 1 times [2022-11-02 20:04:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:37,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767057332] [2022-11-02 20:04:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:04:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:37,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767057332] [2022-11-02 20:04:37,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767057332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:37,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:37,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:04:37,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182259413] [2022-11-02 20:04:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:37,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:37,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:37,459 INFO L87 Difference]: Start difference. First operand 796 states and 1028 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:37,912 INFO L93 Difference]: Finished difference Result 826 states and 1073 transitions. [2022-11-02 20:04:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:37,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-11-02 20:04:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:37,919 INFO L225 Difference]: With dead ends: 826 [2022-11-02 20:04:37,919 INFO L226 Difference]: Without dead ends: 823 [2022-11-02 20:04:37,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:37,923 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 298 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:37,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 419 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:04:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-11-02 20:04:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 795. [2022-11-02 20:04:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 609 states have (on average 1.2545155993431856) internal successors, (764), 618 states have internal predecessors, (764), 131 states have call successors, (131), 55 states have call predecessors, (131), 54 states have return successors, (131), 129 states have call predecessors, (131), 129 states have call successors, (131) [2022-11-02 20:04:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1026 transitions. [2022-11-02 20:04:38,044 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1026 transitions. Word has length 58 [2022-11-02 20:04:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:38,045 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1026 transitions. [2022-11-02 20:04:38,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1026 transitions. [2022-11-02 20:04:38,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 20:04:38,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:38,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:38,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:04:38,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:38,047 INFO L85 PathProgramCache]: Analyzing trace with hash -197591122, now seen corresponding path program 1 times [2022-11-02 20:04:38,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:38,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384992885] [2022-11-02 20:04:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:38,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:04:38,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:38,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384992885] [2022-11-02 20:04:38,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384992885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:38,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:38,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:04:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101780748] [2022-11-02 20:04:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:38,209 INFO L87 Difference]: Start difference. First operand 795 states and 1026 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:38,689 INFO L93 Difference]: Finished difference Result 825 states and 1071 transitions. [2022-11-02 20:04:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2022-11-02 20:04:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:38,695 INFO L225 Difference]: With dead ends: 825 [2022-11-02 20:04:38,695 INFO L226 Difference]: Without dead ends: 813 [2022-11-02 20:04:38,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:38,697 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 258 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:38,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 568 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:04:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-02 20:04:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 785. [2022-11-02 20:04:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 600 states have (on average 1.2533333333333334) internal successors, (752), 608 states have internal predecessors, (752), 130 states have call successors, (130), 55 states have call predecessors, (130), 54 states have return successors, (131), 129 states have call predecessors, (131), 129 states have call successors, (131) [2022-11-02 20:04:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1013 transitions. [2022-11-02 20:04:38,835 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1013 transitions. Word has length 59 [2022-11-02 20:04:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:38,837 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1013 transitions. [2022-11-02 20:04:38,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:04:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1013 transitions. [2022-11-02 20:04:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-02 20:04:38,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:38,851 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:38,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:04:38,852 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash 415459010, now seen corresponding path program 1 times [2022-11-02 20:04:38,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:38,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228050045] [2022-11-02 20:04:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 20:04:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:04:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:04:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:04:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:04:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:04:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:04:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:04:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:04:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:04:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:04:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-02 20:04:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:39,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228050045] [2022-11-02 20:04:39,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228050045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:39,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:39,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:04:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315694879] [2022-11-02 20:04:39,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:04:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:04:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:04:39,197 INFO L87 Difference]: Start difference. First operand 785 states and 1013 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:39,792 INFO L93 Difference]: Finished difference Result 1647 states and 2141 transitions. [2022-11-02 20:04:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:04:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 159 [2022-11-02 20:04:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:39,799 INFO L225 Difference]: With dead ends: 1647 [2022-11-02 20:04:39,799 INFO L226 Difference]: Without dead ends: 877 [2022-11-02 20:04:39,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:04:39,802 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 171 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:39,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 753 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:04:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-11-02 20:04:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 839. [2022-11-02 20:04:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 653 states have (on average 1.2649310872894335) internal successors, (826), 661 states have internal predecessors, (826), 130 states have call successors, (130), 56 states have call predecessors, (130), 55 states have return successors, (131), 129 states have call predecessors, (131), 129 states have call successors, (131) [2022-11-02 20:04:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1087 transitions. [2022-11-02 20:04:39,898 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1087 transitions. Word has length 159 [2022-11-02 20:04:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:39,899 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1087 transitions. [2022-11-02 20:04:39,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1087 transitions. [2022-11-02 20:04:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-02 20:04:39,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:39,903 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:39,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:04:39,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:39,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1466528889, now seen corresponding path program 1 times [2022-11-02 20:04:39,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:39,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874140666] [2022-11-02 20:04:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:39,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:04:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:04:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 20:04:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:04:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:04:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:04:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:04:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 20:04:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:04:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-02 20:04:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 20:04:40,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:40,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874140666] [2022-11-02 20:04:40,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874140666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:40,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:40,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:04:40,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157071034] [2022-11-02 20:04:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:04:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:04:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:04:40,459 INFO L87 Difference]: Start difference. First operand 839 states and 1087 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:41,265 INFO L93 Difference]: Finished difference Result 2261 states and 3026 transitions. [2022-11-02 20:04:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:04:41,266 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2022-11-02 20:04:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:41,275 INFO L225 Difference]: With dead ends: 2261 [2022-11-02 20:04:41,275 INFO L226 Difference]: Without dead ends: 1441 [2022-11-02 20:04:41,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:04:41,279 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 491 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:41,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1500 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:04:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2022-11-02 20:04:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 851. [2022-11-02 20:04:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 665 states have (on average 1.2601503759398496) internal successors, (838), 673 states have internal predecessors, (838), 130 states have call successors, (130), 56 states have call predecessors, (130), 55 states have return successors, (131), 129 states have call predecessors, (131), 129 states have call successors, (131) [2022-11-02 20:04:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1099 transitions. [2022-11-02 20:04:41,386 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1099 transitions. Word has length 168 [2022-11-02 20:04:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:41,387 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1099 transitions. [2022-11-02 20:04:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1099 transitions. [2022-11-02 20:04:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-02 20:04:41,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:41,392 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:04:41,393 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash -527055154, now seen corresponding path program 1 times [2022-11-02 20:04:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:41,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111163877] [2022-11-02 20:04:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:41,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:04:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:04:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:04:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:04:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:04:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:04:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:04:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:04:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:04:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-02 20:04:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 20:04:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:41,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111163877] [2022-11-02 20:04:41,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111163877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:04:41,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468454244] [2022-11-02 20:04:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:41,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:04:41,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:04:41,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:04:41,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:04:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:42,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:04:42,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:04:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 20:04:42,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:04:42,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468454244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:42,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:04:42,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-02 20:04:42,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062798927] [2022-11-02 20:04:42,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:42,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:04:42,559 INFO L87 Difference]: Start difference. First operand 851 states and 1099 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:43,023 INFO L93 Difference]: Finished difference Result 2761 states and 3600 transitions. [2022-11-02 20:04:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:04:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 170 [2022-11-02 20:04:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:43,035 INFO L225 Difference]: With dead ends: 2761 [2022-11-02 20:04:43,035 INFO L226 Difference]: Without dead ends: 1929 [2022-11-02 20:04:43,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:04:43,039 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 388 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:43,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1824 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:04:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2022-11-02 20:04:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 887. [2022-11-02 20:04:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 693 states have (on average 1.2496392496392497) internal successors, (866), 701 states have internal predecessors, (866), 138 states have call successors, (138), 56 states have call predecessors, (138), 55 states have return successors, (139), 137 states have call predecessors, (139), 137 states have call successors, (139) [2022-11-02 20:04:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1143 transitions. [2022-11-02 20:04:43,192 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1143 transitions. Word has length 170 [2022-11-02 20:04:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:43,193 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1143 transitions. [2022-11-02 20:04:43,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1143 transitions. [2022-11-02 20:04:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-02 20:04:43,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:43,198 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:43,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:04:43,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:04:43,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:43,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1538172404, now seen corresponding path program 1 times [2022-11-02 20:04:43,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:43,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64185757] [2022-11-02 20:04:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:43,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:04:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:04:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:04:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:04:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:04:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:04:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:04:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:04:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:04:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-02 20:04:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-02 20:04:44,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:44,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64185757] [2022-11-02 20:04:44,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64185757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:04:44,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94442950] [2022-11-02 20:04:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:44,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:04:44,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:04:44,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:04:44,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:04:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:44,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:04:44,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:04:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-02 20:04:44,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:04:44,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94442950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:44,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:04:44,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 9 [2022-11-02 20:04:44,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62622221] [2022-11-02 20:04:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:44,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:04:44,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:44,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:04:44,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:04:44,919 INFO L87 Difference]: Start difference. First operand 887 states and 1143 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:45,092 INFO L93 Difference]: Finished difference Result 1771 states and 2295 transitions. [2022-11-02 20:04:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:45,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 170 [2022-11-02 20:04:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:45,098 INFO L225 Difference]: With dead ends: 1771 [2022-11-02 20:04:45,098 INFO L226 Difference]: Without dead ends: 895 [2022-11-02 20:04:45,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:04:45,102 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:45,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1078 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:04:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-02 20:04:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2022-11-02 20:04:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 697 states have (on average 1.248206599713056) internal successors, (870), 709 states have internal predecessors, (870), 138 states have call successors, (138), 56 states have call predecessors, (138), 59 states have return successors, (151), 137 states have call predecessors, (151), 137 states have call successors, (151) [2022-11-02 20:04:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1159 transitions. [2022-11-02 20:04:45,261 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1159 transitions. Word has length 170 [2022-11-02 20:04:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:45,262 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1159 transitions. [2022-11-02 20:04:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:04:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1159 transitions. [2022-11-02 20:04:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-02 20:04:45,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:45,269 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:45,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:04:45,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:04:45,494 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash 417612078, now seen corresponding path program 1 times [2022-11-02 20:04:45,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:45,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815201258] [2022-11-02 20:04:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:45,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:04:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:04:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:04:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:04:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:04:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:04:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:04:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-02 20:04:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-02 20:04:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-02 20:04:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 20:04:47,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:47,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815201258] [2022-11-02 20:04:47,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815201258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:04:47,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179856628] [2022-11-02 20:04:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:47,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:04:47,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:04:47,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:04:47,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:04:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:47,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:04:47,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:04:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 20:04:47,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:04:47,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179856628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:47,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:04:47,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2022-11-02 20:04:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880504109] [2022-11-02 20:04:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:47,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:04:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:04:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:04:47,920 INFO L87 Difference]: Start difference. First operand 895 states and 1159 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 20:04:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:48,250 INFO L93 Difference]: Finished difference Result 2133 states and 2816 transitions. [2022-11-02 20:04:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:04:48,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 176 [2022-11-02 20:04:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:48,258 INFO L225 Difference]: With dead ends: 2133 [2022-11-02 20:04:48,258 INFO L226 Difference]: Without dead ends: 1257 [2022-11-02 20:04:48,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:04:48,262 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 91 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:48,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1817 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:04:48,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-11-02 20:04:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 907. [2022-11-02 20:04:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 709 states have (on average 1.2440056417489422) internal successors, (882), 717 states have internal predecessors, (882), 138 states have call successors, (138), 56 states have call predecessors, (138), 59 states have return successors, (151), 141 states have call predecessors, (151), 137 states have call successors, (151) [2022-11-02 20:04:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1171 transitions. [2022-11-02 20:04:48,442 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1171 transitions. Word has length 176 [2022-11-02 20:04:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:48,443 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1171 transitions. [2022-11-02 20:04:48,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 20:04:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1171 transitions. [2022-11-02 20:04:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:04:48,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:48,448 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:48,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:04:48,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:04:48,675 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:48,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -625531764, now seen corresponding path program 2 times [2022-11-02 20:04:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:48,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947503499] [2022-11-02 20:04:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:04:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:04:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:04:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:04:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:04:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:04:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-02 20:04:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:04:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:04:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-02 20:04:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-02 20:04:50,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:50,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947503499] [2022-11-02 20:04:50,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947503499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:04:50,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289880236] [2022-11-02 20:04:50,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:04:50,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:04:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:04:50,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:04:50,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:04:50,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:04:50,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:04:50,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:04:50,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:04:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-02 20:04:50,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:04:50,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289880236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:50,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:04:50,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-11-02 20:04:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686402395] [2022-11-02 20:04:50,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:04:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:50,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:04:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:04:50,799 INFO L87 Difference]: Start difference. First operand 907 states and 1171 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 20:04:51,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:51,879 INFO L93 Difference]: Finished difference Result 2569 states and 3390 transitions. [2022-11-02 20:04:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:04:51,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 182 [2022-11-02 20:04:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:51,889 INFO L225 Difference]: With dead ends: 2569 [2022-11-02 20:04:51,889 INFO L226 Difference]: Without dead ends: 1671 [2022-11-02 20:04:51,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:04:51,894 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 659 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:51,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1257 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:04:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-11-02 20:04:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1113. [2022-11-02 20:04:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 878 states have (on average 1.2334851936218678) internal successors, (1083), 890 states have internal predecessors, (1083), 155 states have call successors, (155), 74 states have call predecessors, (155), 79 states have return successors, (174), 160 states have call predecessors, (174), 154 states have call successors, (174) [2022-11-02 20:04:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1412 transitions. [2022-11-02 20:04:52,185 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1412 transitions. Word has length 182 [2022-11-02 20:04:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:52,186 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1412 transitions. [2022-11-02 20:04:52,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 20:04:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1412 transitions. [2022-11-02 20:04:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-02 20:04:52,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:52,192 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:52,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:04:52,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:04:52,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2144594186, now seen corresponding path program 1 times [2022-11-02 20:04:52,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:52,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298519070] [2022-11-02 20:04:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:52,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:04:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:04:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:04:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:04:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:04:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:04:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-02 20:04:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:04:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-02 20:04:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-02 20:04:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-02 20:04:53,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298519070] [2022-11-02 20:04:53,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298519070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:04:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594554115] [2022-11-02 20:04:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:53,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:04:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:04:53,143 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:04:53,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:04:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:53,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:04:53,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:04:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 20:04:54,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:04:54,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594554115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:54,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:04:54,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-11-02 20:04:54,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295510509] [2022-11-02 20:04:54,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:54,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:04:54,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:04:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:04:54,083 INFO L87 Difference]: Start difference. First operand 1113 states and 1412 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-02 20:04:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:54,830 INFO L93 Difference]: Finished difference Result 3005 states and 3816 transitions. [2022-11-02 20:04:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:04:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 201 [2022-11-02 20:04:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:54,846 INFO L225 Difference]: With dead ends: 3005 [2022-11-02 20:04:54,846 INFO L226 Difference]: Without dead ends: 2997 [2022-11-02 20:04:54,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:04:54,849 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 387 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:54,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1051 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:04:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2022-11-02 20:04:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2981. [2022-11-02 20:04:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2349 states have (on average 1.236270753512133) internal successors, (2904), 2387 states have internal predecessors, (2904), 418 states have call successors, (418), 196 states have call predecessors, (418), 213 states have return successors, (471), 429 states have call predecessors, (471), 417 states have call successors, (471) [2022-11-02 20:04:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3793 transitions. [2022-11-02 20:04:55,528 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3793 transitions. Word has length 201 [2022-11-02 20:04:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:55,528 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 3793 transitions. [2022-11-02 20:04:55,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-02 20:04:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3793 transitions. [2022-11-02 20:04:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-02 20:04:55,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:55,536 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:55,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 20:04:55,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:04:55,759 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:55,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1133476936, now seen corresponding path program 1 times [2022-11-02 20:04:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:55,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142166370] [2022-11-02 20:04:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:55,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:04:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:04:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:04:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:04:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:04:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:04:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:04:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:04:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:04:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-02 20:04:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:04:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-02 20:04:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-02 20:04:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-02 20:04:56,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142166370] [2022-11-02 20:04:56,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142166370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:56,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:56,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:04:56,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201956883] [2022-11-02 20:04:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:04:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:04:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:04:56,270 INFO L87 Difference]: Start difference. First operand 2981 states and 3793 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 20:04:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:58,541 INFO L93 Difference]: Finished difference Result 8559 states and 10960 transitions. [2022-11-02 20:04:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:04:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 201 [2022-11-02 20:04:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:58,571 INFO L225 Difference]: With dead ends: 8559 [2022-11-02 20:04:58,571 INFO L226 Difference]: Without dead ends: 5597 [2022-11-02 20:04:58,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:04:58,581 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 527 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:58,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1299 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:04:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-11-02 20:04:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 4953. [2022-11-02 20:04:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3874 states have (on average 1.2400619514713473) internal successors, (4804), 3966 states have internal predecessors, (4804), 715 states have call successors, (715), 334 states have call predecessors, (715), 363 states have return successors, (804), 704 states have call predecessors, (804), 714 states have call successors, (804) [2022-11-02 20:04:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6323 transitions. [2022-11-02 20:04:59,592 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6323 transitions. Word has length 201 [2022-11-02 20:04:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:59,592 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6323 transitions. [2022-11-02 20:04:59,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 20:04:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6323 transitions. [2022-11-02 20:04:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-02 20:04:59,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:59,604 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:59,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:04:59,605 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:59,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2389716, now seen corresponding path program 1 times [2022-11-02 20:04:59,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:59,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166604374] [2022-11-02 20:04:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:59,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:05:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:05:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:05:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:05:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:05:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:05:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:05:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:05:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:05:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:05:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:05:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:05:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:05:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:05:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:05:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:05:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-02 20:05:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:05:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-02 20:05:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-02 20:05:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-02 20:05:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-02 20:05:01,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:01,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166604374] [2022-11-02 20:05:01,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166604374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:05:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940590306] [2022-11-02 20:05:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:01,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:05:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:05:01,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:05:01,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:05:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:02,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-02 20:05:02,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:05:02,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:05:02,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-02 20:05:02,834 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1040 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_1040) |c_#memory_int|)) is different from true [2022-11-02 20:05:02,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:05:02,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:05:02,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-02 20:05:03,006 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:05:03,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:06:17,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-02 20:06:41,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-02 20:06:41,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-02 20:06:53,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-02 20:06:53,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-02 20:06:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:06:53,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-02 20:06:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 44 trivial. 2 not checked. [2022-11-02 20:06:53,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:06:53,809 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_usb_acecad_probe_~id#1.offset| Int) (v_ArrVal_1051 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_usb_acecad_probe_~input_dev~0#1.base| v_ArrVal_1051) |c_ULTIMATE.start_usb_acecad_probe_~id#1.base|) (+ 16 |ULTIMATE.start_usb_acecad_probe_~id#1.offset|)) 0)) is different from false [2022-11-02 20:06:53,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940590306] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:06:53,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:06:53,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 31] total 41 [2022-11-02 20:06:53,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919287952] [2022-11-02 20:06:53,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:06:53,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 20:06:53,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:53,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 20:06:53,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1426, Unknown=9, NotChecked=154, Total=1722 [2022-11-02 20:06:53,834 INFO L87 Difference]: Start difference. First operand 4953 states and 6323 transitions. Second operand has 41 states, 38 states have (on average 6.5) internal successors, (247), 28 states have internal predecessors, (247), 13 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-02 20:08:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:18,329 INFO L93 Difference]: Finished difference Result 12503 states and 16280 transitions. [2022-11-02 20:08:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:08:18,339 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 6.5) internal successors, (247), 28 states have internal predecessors, (247), 13 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) Word has length 208 [2022-11-02 20:08:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:18,410 INFO L225 Difference]: With dead ends: 12503 [2022-11-02 20:08:18,413 INFO L226 Difference]: Without dead ends: 7557 [2022-11-02 20:08:18,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 251 SyntacticMatches, 16 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 191.5s TimeCoverageRelationStatistics Valid=316, Invalid=3804, Unknown=48, NotChecked=254, Total=4422 [2022-11-02 20:08:18,429 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 587 mSDsluCounter, 7671 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 8139 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1070 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:18,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 8139 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1762 Invalid, 0 Unknown, 1070 Unchecked, 1.9s Time] [2022-11-02 20:08:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2022-11-02 20:08:19,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 5619. [2022-11-02 20:08:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5619 states, 4428 states have (on average 1.2330623306233062) internal successors, (5460), 4500 states have internal predecessors, (5460), 770 states have call successors, (770), 365 states have call predecessors, (770), 420 states have return successors, (943), 805 states have call predecessors, (943), 769 states have call successors, (943) [2022-11-02 20:08:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 7173 transitions. [2022-11-02 20:08:19,483 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 7173 transitions. Word has length 208 [2022-11-02 20:08:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:19,484 INFO L495 AbstractCegarLoop]: Abstraction has 5619 states and 7173 transitions. [2022-11-02 20:08:19,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 6.5) internal successors, (247), 28 states have internal predecessors, (247), 13 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (37), 17 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-02 20:08:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 7173 transitions. [2022-11-02 20:08:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-02 20:08:19,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:19,496 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:19,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:19,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:08:19,723 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:19,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:19,724 INFO L85 PathProgramCache]: Analyzing trace with hash -806596076, now seen corresponding path program 2 times [2022-11-02 20:08:19,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:19,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474407026] [2022-11-02 20:08:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:19,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:08:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:08:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:08:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:08:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:08:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:08:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:08:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 20:08:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-02 20:08:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-02 20:08:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:08:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-02 20:08:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-02 20:08:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-02 20:08:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-02 20:08:20,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474407026] [2022-11-02 20:08:20,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474407026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:20,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:20,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:08:20,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758358742] [2022-11-02 20:08:20,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:20,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:08:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:08:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:08:20,788 INFO L87 Difference]: Start difference. First operand 5619 states and 7173 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 20:08:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:23,124 INFO L93 Difference]: Finished difference Result 14259 states and 18803 transitions. [2022-11-02 20:08:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:08:23,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 220 [2022-11-02 20:08:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:23,184 INFO L225 Difference]: With dead ends: 14259 [2022-11-02 20:08:23,185 INFO L226 Difference]: Without dead ends: 9013 [2022-11-02 20:08:23,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:23,260 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 194 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:23,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 2215 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:08:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9013 states. [2022-11-02 20:08:24,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9013 to 5749. [2022-11-02 20:08:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5749 states, 4532 states have (on average 1.2334510150044131) internal successors, (5590), 4578 states have internal predecessors, (5590), 796 states have call successors, (796), 365 states have call predecessors, (796), 420 states have return successors, (969), 857 states have call predecessors, (969), 795 states have call successors, (969) [2022-11-02 20:08:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5749 states to 5749 states and 7355 transitions. [2022-11-02 20:08:24,341 INFO L78 Accepts]: Start accepts. Automaton has 5749 states and 7355 transitions. Word has length 220 [2022-11-02 20:08:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:24,342 INFO L495 AbstractCegarLoop]: Abstraction has 5749 states and 7355 transitions. [2022-11-02 20:08:24,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 20:08:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5749 states and 7355 transitions. [2022-11-02 20:08:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-02 20:08:24,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:24,353 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:24,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:08:24,354 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1025045552, now seen corresponding path program 3 times [2022-11-02 20:08:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:24,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156552439] [2022-11-02 20:08:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:24,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:08:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:08:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:08:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:08:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:08:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:08:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:08:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 20:08:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:08:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 20:08:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-02 20:08:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:08:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:08:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-02 20:08:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-02 20:08:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-02 20:08:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-02 20:08:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:25,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156552439] [2022-11-02 20:08:25,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156552439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:25,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772883423] [2022-11-02 20:08:25,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:08:25,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:25,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:25,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:25,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16f9430-d1e6-4f35-94a2-9f19fd014e32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process