./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/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_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/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 32bit --witnessprinter.graph.data.programhash f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c --- 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 20:58:31,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:58:31,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:58:31,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:58:31,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:58:31,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:58:31,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:58:31,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:58:31,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:58:31,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:58:31,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:58:31,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:58:31,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:58:31,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:58:31,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:58:31,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:58:31,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:58:31,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:58:31,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:58:31,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:58:31,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:58:31,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:58:31,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:58:31,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:58:31,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:58:31,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:58:31,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:58:31,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:58:31,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:58:31,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:58:31,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:58:31,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:58:31,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:58:31,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:58:31,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:58:31,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:58:31,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:58:31,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:58:31,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:58:31,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:58:31,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:58:31,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:58:31,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:58:31,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:58:31,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:58:31,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:58:31,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:58:31,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:58:31,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:58:31,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:58:31,579 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:58:31,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:58:31,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:58:31,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:58:31,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:58:31,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:58:31,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:58:31,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:58:31,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:58:31,581 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:58:31,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:58:31,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:58:31,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:58:31,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:58:31,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:58:31,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:58:31,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:31,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:58:31,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:58:31,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:58:31,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:58:31,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:58:31,584 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:58:31,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:58:31,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:58:31,585 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_e967a5dd-98d3-4855-82a9-5760cab35caa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c [2022-11-02 20:58:31,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:58:31,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:58:31,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:58:31,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:58:31,848 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:58:31,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2022-11-02 20:58:31,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/data/e93b8b899/7a652033b81c4909852df6af8ab5b595/FLAGec9a75a87 [2022-11-02 20:58:32,520 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:58:32,526 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2022-11-02 20:58:32,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/data/e93b8b899/7a652033b81c4909852df6af8ab5b595/FLAGec9a75a87 [2022-11-02 20:58:32,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/data/e93b8b899/7a652033b81c4909852df6af8ab5b595 [2022-11-02 20:58:32,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:58:32,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:58:32,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:32,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:58:32,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:58:32,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:32" (1/1) ... [2022-11-02 20:58:32,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3058e9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:32, skipping insertion in model container [2022-11-02 20:58:32,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:32" (1/1) ... [2022-11-02 20:58:32,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:58:32,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:58:33,099 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_e967a5dd-98d3-4855-82a9-5760cab35caa/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2022-11-02 20:58:33,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:33,440 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:58:33,466 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_e967a5dd-98d3-4855-82a9-5760cab35caa/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2022-11-02 20:58:33,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:33,653 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:58:33,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33 WrapperNode [2022-11-02 20:58:33,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:33,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:33,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:58:33,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:58:33,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,749 INFO L138 Inliner]: procedures = 94, calls = 353, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 945 [2022-11-02 20:58:33,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:33,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:58:33,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:58:33,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:58:33,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,830 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:58:33,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:58:33,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:58:33,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:58:33,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (1/1) ... [2022-11-02 20:58:33,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:33,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:33,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:58:33,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:58:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:58:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-02 20:58:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-02 20:58:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-02 20:58:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-02 20:58:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-02 20:58:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-02 20:58:33,984 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-02 20:58:33,984 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-02 20:58:33,984 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-02 20:58:33,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-02 20:58:33,984 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-02 20:58:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-02 20:58:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-02 20:58:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-02 20:58:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-02 20:58:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-02 20:58:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-02 20:58:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-02 20:58:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-02 20:58:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-02 20:58:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-02 20:58:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-02 20:58:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-02 20:58:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-02 20:58:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-02 20:58:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-02 20:58:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-02 20:58:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-02 20:58:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-02 20:58:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-02 20:58:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-02 20:58:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-02 20:58:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-02 20:58:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-02 20:58:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-02 20:58:33,988 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-02 20:58:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-02 20:58:33,988 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-02 20:58:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-02 20:58:33,988 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-02 20:58:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-02 20:58:33,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-02 20:58:33,989 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-02 20:58:33,989 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-02 20:58:33,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:58:33,989 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-02 20:58:33,989 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-02 20:58:33,989 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-02 20:58:33,989 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-02 20:58:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-02 20:58:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-02 20:58:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-02 20:58:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-02 20:58:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-02 20:58:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-02 20:58:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:58:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:58:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-02 20:58:33,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-02 20:58:34,164 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:58:34,167 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:58:35,380 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:58:35,399 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:58:35,400 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:58:35,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:35 BoogieIcfgContainer [2022-11-02 20:58:35,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:58:35,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:58:35,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:58:35,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:58:35,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:58:32" (1/3) ... [2022-11-02 20:58:35,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45266f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:35, skipping insertion in model container [2022-11-02 20:58:35,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:33" (2/3) ... [2022-11-02 20:58:35,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45266f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:35, skipping insertion in model container [2022-11-02 20:58:35,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:35" (3/3) ... [2022-11-02 20:58:35,415 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2022-11-02 20:58:35,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:58:35,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:58:35,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:58:35,528 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;@61753b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:58:35,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:58:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 469 states have (on average 1.6609808102345416) internal successors, (779), 487 states have internal predecessors, (779), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2022-11-02 20:58:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-02 20:58:35,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:35,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:58:35,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:35,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash 507112245, now seen corresponding path program 1 times [2022-11-02 20:58:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:35,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514239031] [2022-11-02 20:58:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:35,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:58:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:58:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:58:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:58:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:58:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:58:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:58:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:58:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:58:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:58:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:58:36,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:36,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514239031] [2022-11-02 20:58:36,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514239031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:36,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:36,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:58:36,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736906158] [2022-11-02 20:58:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:36,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:58:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:58:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:58:37,009 INFO L87 Difference]: Start difference. First operand has 612 states, 469 states have (on average 1.6609808102345416) internal successors, (779), 487 states have internal predecessors, (779), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:58:47,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:47,575 INFO L93 Difference]: Finished difference Result 1575 states and 2698 transitions. [2022-11-02 20:58:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:58:47,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2022-11-02 20:58:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:47,616 INFO L225 Difference]: With dead ends: 1575 [2022-11-02 20:58:47,618 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 20:58:47,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:58:47,641 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1187 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 5828 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 6188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 5828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:47,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 3948 Invalid, 6188 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [360 Valid, 5828 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-02 20:58:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 20:58:47,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 615. [2022-11-02 20:58:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 472 states have (on average 1.652542372881356) internal successors, (780), 490 states have internal predecessors, (780), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2022-11-02 20:58:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1007 transitions. [2022-11-02 20:58:47,990 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1007 transitions. Word has length 115 [2022-11-02 20:58:47,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:47,991 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 1007 transitions. [2022-11-02 20:58:47,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:58:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1007 transitions. [2022-11-02 20:58:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 20:58:47,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:47,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:58:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:58:48,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash 122805697, now seen corresponding path program 1 times [2022-11-02 20:58:48,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:48,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912913589] [2022-11-02 20:58:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:58:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:58:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:58:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:58:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:58:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:58:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:58:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:58:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:58:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:58:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:58:48,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:48,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912913589] [2022-11-02 20:58:48,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912913589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:48,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:48,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:58:48,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606894916] [2022-11-02 20:58:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:58:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:58:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:58:48,542 INFO L87 Difference]: Start difference. First operand 615 states and 1007 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:58:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:55,667 INFO L93 Difference]: Finished difference Result 1556 states and 2627 transitions. [2022-11-02 20:58:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:58:55,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-11-02 20:58:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:55,676 INFO L225 Difference]: With dead ends: 1556 [2022-11-02 20:58:55,676 INFO L226 Difference]: Without dead ends: 926 [2022-11-02 20:58:55,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:58:55,681 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 2213 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:55,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2331 Valid, 2161 Invalid, 3544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [816 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-02 20:58:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-02 20:58:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 591. [2022-11-02 20:58:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 451 states have (on average 1.6430155210643016) internal successors, (741), 467 states have internal predecessors, (741), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:58:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 964 transitions. [2022-11-02 20:58:55,893 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 964 transitions. Word has length 116 [2022-11-02 20:58:55,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:55,894 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 964 transitions. [2022-11-02 20:58:55,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:58:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 964 transitions. [2022-11-02 20:58:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 20:58:55,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:55,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:58:55,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:58:55,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:55,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1001447589, now seen corresponding path program 1 times [2022-11-02 20:58:55,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:55,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089572045] [2022-11-02 20:58:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:58:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:58:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:58:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:58:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:58:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:58:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:58:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:58:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:58:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:58:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:58:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:58:56,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:56,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089572045] [2022-11-02 20:58:56,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089572045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:56,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:56,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:58:56,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116749133] [2022-11-02 20:58:56,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:56,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:58:56,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:56,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:58:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:58:56,503 INFO L87 Difference]: Start difference. First operand 591 states and 964 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:03,285 INFO L93 Difference]: Finished difference Result 1501 states and 2533 transitions. [2022-11-02 20:59:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:03,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-11-02 20:59:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:03,292 INFO L225 Difference]: With dead ends: 1501 [2022-11-02 20:59:03,293 INFO L226 Difference]: Without dead ends: 926 [2022-11-02 20:59:03,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:03,298 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 1672 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:03,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 2140 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-02 20:59:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-02 20:59:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 591. [2022-11-02 20:59:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 451 states have (on average 1.6407982261640799) internal successors, (740), 467 states have internal predecessors, (740), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:59:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 963 transitions. [2022-11-02 20:59:03,467 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 963 transitions. Word has length 116 [2022-11-02 20:59:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:03,468 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 963 transitions. [2022-11-02 20:59:03,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 963 transitions. [2022-11-02 20:59:03,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-02 20:59:03,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:03,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:59:03,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:59:03,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:03,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1875165567, now seen corresponding path program 1 times [2022-11-02 20:59:03,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:03,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430940085] [2022-11-02 20:59:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:03,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:59:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:59:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:59:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:59:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:59:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:59:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:59:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:59:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:59:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:59:04,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:04,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430940085] [2022-11-02 20:59:04,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430940085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:04,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:04,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:59:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796040024] [2022-11-02 20:59:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:59:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:59:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:04,155 INFO L87 Difference]: Start difference. First operand 591 states and 963 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:59:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:12,679 INFO L93 Difference]: Finished difference Result 1519 states and 2555 transitions. [2022-11-02 20:59:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:12,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2022-11-02 20:59:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:12,687 INFO L225 Difference]: With dead ends: 1519 [2022-11-02 20:59:12,687 INFO L226 Difference]: Without dead ends: 920 [2022-11-02 20:59:12,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:59:12,692 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 2252 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 5352 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 6184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 5352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:12,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 3549 Invalid, 6184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [832 Valid, 5352 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-02 20:59:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-02 20:59:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 585. [2022-11-02 20:59:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 445 states have (on average 1.6337078651685393) internal successors, (727), 461 states have internal predecessors, (727), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:59:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 950 transitions. [2022-11-02 20:59:12,860 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 950 transitions. Word has length 117 [2022-11-02 20:59:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:12,861 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 950 transitions. [2022-11-02 20:59:12,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:59:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 950 transitions. [2022-11-02 20:59:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-02 20:59:12,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:12,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:59:12,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:59:12,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:12,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:12,866 INFO L85 PathProgramCache]: Analyzing trace with hash 162097229, now seen corresponding path program 1 times [2022-11-02 20:59:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:12,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738597998] [2022-11-02 20:59:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:12,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:59:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:59:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:59:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:59:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:59:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:59:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:59:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 20:59:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 20:59:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:59:13,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:13,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738597998] [2022-11-02 20:59:13,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738597998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:13,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:13,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:13,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881965131] [2022-11-02 20:59:13,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:13,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:13,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:13,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:13,417 INFO L87 Difference]: Start difference. First operand 585 states and 950 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:20,562 INFO L93 Difference]: Finished difference Result 1489 states and 2504 transitions. [2022-11-02 20:59:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-11-02 20:59:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:20,568 INFO L225 Difference]: With dead ends: 1489 [2022-11-02 20:59:20,568 INFO L226 Difference]: Without dead ends: 920 [2022-11-02 20:59:20,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:20,573 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1075 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:20,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 2187 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-02 20:59:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-02 20:59:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 585. [2022-11-02 20:59:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 445 states have (on average 1.6314606741573034) internal successors, (726), 461 states have internal predecessors, (726), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:59:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 949 transitions. [2022-11-02 20:59:20,760 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 949 transitions. Word has length 118 [2022-11-02 20:59:20,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:20,763 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 949 transitions. [2022-11-02 20:59:20,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 949 transitions. [2022-11-02 20:59:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-02 20:59:20,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:20,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:59:20,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:59:20,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:20,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1443429858, now seen corresponding path program 1 times [2022-11-02 20:59:20,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:20,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042003803] [2022-11-02 20:59:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:20,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:59:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:59:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:59:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:59:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:59:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 20:59:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:59:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 20:59:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:59:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:59:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042003803] [2022-11-02 20:59:21,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042003803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:21,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:21,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:59:21,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729565517] [2022-11-02 20:59:21,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:59:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:59:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:21,329 INFO L87 Difference]: Start difference. First operand 585 states and 949 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:59:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:29,419 INFO L93 Difference]: Finished difference Result 1507 states and 2524 transitions. [2022-11-02 20:59:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 119 [2022-11-02 20:59:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:29,425 INFO L225 Difference]: With dead ends: 1507 [2022-11-02 20:59:29,426 INFO L226 Difference]: Without dead ends: 914 [2022-11-02 20:59:29,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:59:29,430 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 2201 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 5290 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 6118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 5290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:29,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2319 Valid, 3576 Invalid, 6118 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [828 Valid, 5290 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-02 20:59:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-11-02 20:59:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 579. [2022-11-02 20:59:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 439 states have (on average 1.6241457858769932) internal successors, (713), 455 states have internal predecessors, (713), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:59:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 936 transitions. [2022-11-02 20:59:29,610 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 936 transitions. Word has length 119 [2022-11-02 20:59:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:29,610 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 936 transitions. [2022-11-02 20:59:29,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:59:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 936 transitions. [2022-11-02 20:59:29,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 20:59:29,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:29,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:59:29,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:59:29,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1585259534, now seen corresponding path program 1 times [2022-11-02 20:59:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:29,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072949737] [2022-11-02 20:59:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:59:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:59:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 20:59:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:59:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 20:59:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:59:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:59:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:59:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:59:30,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:30,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072949737] [2022-11-02 20:59:30,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072949737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:30,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:30,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562495974] [2022-11-02 20:59:30,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:30,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:30,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:30,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:30,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:30,117 INFO L87 Difference]: Start difference. First operand 579 states and 936 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:36,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:36,564 INFO L93 Difference]: Finished difference Result 1477 states and 2475 transitions. [2022-11-02 20:59:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:36,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2022-11-02 20:59:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:36,570 INFO L225 Difference]: With dead ends: 1477 [2022-11-02 20:59:36,570 INFO L226 Difference]: Without dead ends: 914 [2022-11-02 20:59:36,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:36,574 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 1601 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:36,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 2103 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-02 20:59:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-11-02 20:59:36,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 579. [2022-11-02 20:59:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 439 states have (on average 1.6218678815489749) internal successors, (712), 455 states have internal predecessors, (712), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:59:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 935 transitions. [2022-11-02 20:59:36,731 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 935 transitions. Word has length 120 [2022-11-02 20:59:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:36,731 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 935 transitions. [2022-11-02 20:59:36,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 935 transitions. [2022-11-02 20:59:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-02 20:59:36,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:36,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:59:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:59:36,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash 406721730, now seen corresponding path program 1 times [2022-11-02 20:59:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:36,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597327716] [2022-11-02 20:59:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:59:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:59:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:59:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:59:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 20:59:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:59:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:59:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:59:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:59:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:59:37,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:37,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597327716] [2022-11-02 20:59:37,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597327716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:37,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:37,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:59:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130099249] [2022-11-02 20:59:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:37,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:59:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:59:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:37,304 INFO L87 Difference]: Start difference. First operand 579 states and 935 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:59:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:45,598 INFO L93 Difference]: Finished difference Result 1495 states and 2493 transitions. [2022-11-02 20:59:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:45,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 121 [2022-11-02 20:59:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:45,604 INFO L225 Difference]: With dead ends: 1495 [2022-11-02 20:59:45,604 INFO L226 Difference]: Without dead ends: 908 [2022-11-02 20:59:45,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:59:45,607 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1635 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 3422 SdHoareTripleChecker+Invalid, 5933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:45,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 3422 Invalid, 5933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [592 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-02 20:59:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-11-02 20:59:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 573. [2022-11-02 20:59:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 433 states have (on average 1.6143187066974596) internal successors, (699), 449 states have internal predecessors, (699), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:59:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 922 transitions. [2022-11-02 20:59:45,779 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 922 transitions. Word has length 121 [2022-11-02 20:59:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:45,780 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 922 transitions. [2022-11-02 20:59:45,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 20:59:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 922 transitions. [2022-11-02 20:59:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-02 20:59:45,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:45,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:59:45,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:59:45,784 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2068183009, now seen corresponding path program 1 times [2022-11-02 20:59:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:45,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34762315] [2022-11-02 20:59:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:59:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:59:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:59:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:59:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 20:59:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:59:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:59:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:59:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:59:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:59:46,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:46,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34762315] [2022-11-02 20:59:46,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34762315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:46,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:46,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:46,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867129849] [2022-11-02 20:59:46,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:46,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:46,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:46,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:46,290 INFO L87 Difference]: Start difference. First operand 573 states and 922 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:53,249 INFO L93 Difference]: Finished difference Result 1465 states and 2446 transitions. [2022-11-02 20:59:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:53,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2022-11-02 20:59:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:53,255 INFO L225 Difference]: With dead ends: 1465 [2022-11-02 20:59:53,256 INFO L226 Difference]: Without dead ends: 908 [2022-11-02 20:59:53,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:53,259 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 1010 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:53,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 2207 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-02 20:59:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-11-02 20:59:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 573. [2022-11-02 20:59:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 433 states have (on average 1.6120092378752886) internal successors, (698), 449 states have internal predecessors, (698), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 20:59:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 921 transitions. [2022-11-02 20:59:53,461 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 921 transitions. Word has length 121 [2022-11-02 20:59:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:53,462 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 921 transitions. [2022-11-02 20:59:53,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:59:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 921 transitions. [2022-11-02 20:59:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 20:59:53,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:53,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 20:59:53,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:59:53,466 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1120726636, now seen corresponding path program 1 times [2022-11-02 20:59:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:53,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394428053] [2022-11-02 20:59:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:53,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:59:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:59:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:59:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:59:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:59:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:59:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:59:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:59:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:59:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:59:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 20:59:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:59:53,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:53,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394428053] [2022-11-02 20:59:53,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394428053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:53,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:53,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068167105] [2022-11-02 20:59:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:53,942 INFO L87 Difference]: Start difference. First operand 573 states and 921 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 21:00:00,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:00,820 INFO L93 Difference]: Finished difference Result 1477 states and 2456 transitions. [2022-11-02 21:00:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:00:00,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2022-11-02 21:00:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:00,840 INFO L225 Difference]: With dead ends: 1477 [2022-11-02 21:00:00,841 INFO L226 Difference]: Without dead ends: 920 [2022-11-02 21:00:00,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:00:00,844 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 1529 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:00,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 2150 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-02 21:00:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-02 21:00:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 579. [2022-11-02 21:00:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 439 states have (on average 1.603644646924829) internal successors, (704), 455 states have internal predecessors, (704), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 21:00:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 927 transitions. [2022-11-02 21:00:01,026 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 927 transitions. Word has length 122 [2022-11-02 21:00:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:01,026 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 927 transitions. [2022-11-02 21:00:01,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 21:00:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 927 transitions. [2022-11-02 21:00:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:00:01,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:01,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:00:01,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:00:01,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1707002858, now seen corresponding path program 1 times [2022-11-02 21:00:01,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:01,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502608846] [2022-11-02 21:00:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:00:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 21:00:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 21:00:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 21:00:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 21:00:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:00:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 21:00:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:00:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:00:01,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:01,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502608846] [2022-11-02 21:00:01,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502608846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:01,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:01,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:00:01,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167597358] [2022-11-02 21:00:01,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:01,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:00:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:01,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:00:01,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:01,614 INFO L87 Difference]: Start difference. First operand 579 states and 927 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 21:00:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:10,095 INFO L93 Difference]: Finished difference Result 1480 states and 2457 transitions. [2022-11-02 21:00:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:00:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 122 [2022-11-02 21:00:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:10,102 INFO L225 Difference]: With dead ends: 1480 [2022-11-02 21:00:10,102 INFO L226 Difference]: Without dead ends: 908 [2022-11-02 21:00:10,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:10,106 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 1011 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 5346 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 5700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 5346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:10,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 3696 Invalid, 5700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [354 Valid, 5346 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-02 21:00:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-11-02 21:00:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 573. [2022-11-02 21:00:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 433 states have (on average 1.6096997690531178) internal successors, (697), 449 states have internal predecessors, (697), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-02 21:00:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 920 transitions. [2022-11-02 21:00:10,340 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 920 transitions. Word has length 122 [2022-11-02 21:00:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:10,341 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 920 transitions. [2022-11-02 21:00:10,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 21:00:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 920 transitions. [2022-11-02 21:00:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 21:00:10,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:10,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:00:10,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:00:10,345 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:10,346 INFO L85 PathProgramCache]: Analyzing trace with hash -796988665, now seen corresponding path program 1 times [2022-11-02 21:00:10,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:10,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340967918] [2022-11-02 21:00:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:00:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:00:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:00:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:00:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 21:00:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:00:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 21:00:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 21:00:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:00:10,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:10,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340967918] [2022-11-02 21:00:10,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340967918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:10,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737577886] [2022-11-02 21:00:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:10,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:10,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:10,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:00:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:11,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:00:11,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:00:11,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:11,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737577886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:11,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:11,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-02 21:00:11,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011399716] [2022-11-02 21:00:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:11,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:11,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:11,389 INFO L87 Difference]: Start difference. First operand 573 states and 920 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 21:00:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:11,865 INFO L93 Difference]: Finished difference Result 1630 states and 2648 transitions. [2022-11-02 21:00:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:11,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2022-11-02 21:00:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:11,871 INFO L225 Difference]: With dead ends: 1630 [2022-11-02 21:00:11,872 INFO L226 Difference]: Without dead ends: 1075 [2022-11-02 21:00:11,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:11,875 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 847 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:11,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2461 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-02 21:00:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1060. [2022-11-02 21:00:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 808 states have (on average 1.6212871287128714) internal successors, (1310), 839 states have internal predecessors, (1310), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2022-11-02 21:00:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1714 transitions. [2022-11-02 21:00:12,241 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1714 transitions. Word has length 123 [2022-11-02 21:00:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:12,241 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1714 transitions. [2022-11-02 21:00:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 21:00:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1714 transitions. [2022-11-02 21:00:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 21:00:12,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:12,247 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 21:00:12,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:12,475 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:12,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1680226773, now seen corresponding path program 1 times [2022-11-02 21:00:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:12,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244682948] [2022-11-02 21:00:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:00:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:00:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:00:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:00:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 21:00:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:00:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 21:00:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 21:00:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:00:13,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:13,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244682948] [2022-11-02 21:00:13,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244682948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:13,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648699451] [2022-11-02 21:00:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:13,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:13,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:13,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:13,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:00:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:13,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:00:13,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:00:13,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:13,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648699451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:13,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:13,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-02 21:00:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587998370] [2022-11-02 21:00:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:13,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:13,580 INFO L87 Difference]: Start difference. First operand 1060 states and 1714 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 21:00:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:14,254 INFO L93 Difference]: Finished difference Result 2604 states and 4238 transitions. [2022-11-02 21:00:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2022-11-02 21:00:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:14,262 INFO L225 Difference]: With dead ends: 2604 [2022-11-02 21:00:14,263 INFO L226 Difference]: Without dead ends: 1562 [2022-11-02 21:00:14,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:14,271 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 847 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:14,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2401 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-11-02 21:00:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1514. [2022-11-02 21:00:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1156 states have (on average 1.6323529411764706) internal successors, (1887), 1202 states have internal predecessors, (1887), 286 states have call successors, (286), 71 states have call predecessors, (286), 71 states have return successors, (293), 279 states have call predecessors, (293), 283 states have call successors, (293) [2022-11-02 21:00:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2466 transitions. [2022-11-02 21:00:14,722 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2466 transitions. Word has length 124 [2022-11-02 21:00:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:14,723 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 2466 transitions. [2022-11-02 21:00:14,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 21:00:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2466 transitions. [2022-11-02 21:00:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 21:00:14,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:14,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 21:00:14,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:14,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 21:00:14,943 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash -682983758, now seen corresponding path program 1 times [2022-11-02 21:00:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582935003] [2022-11-02 21:00:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:00:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:00:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:00:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:00:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:00:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:00:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:00:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 21:00:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 21:00:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:00:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:15,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582935003] [2022-11-02 21:00:15,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582935003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:15,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:15,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:00:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125561145] [2022-11-02 21:00:15,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:00:15,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:15,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:00:15,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:15,504 INFO L87 Difference]: Start difference. First operand 1514 states and 2466 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 21:00:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:40,547 INFO L93 Difference]: Finished difference Result 7230 states and 13072 transitions. [2022-11-02 21:00:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:00:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2022-11-02 21:00:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:40,602 INFO L225 Difference]: With dead ends: 7230 [2022-11-02 21:00:40,602 INFO L226 Difference]: Without dead ends: 5734 [2022-11-02 21:00:40,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:00:40,614 INFO L413 NwaCegarLoop]: 1211 mSDtfsCounter, 2968 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 8805 mSolverCounterSat, 2024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3093 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 10829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2024 IncrementalHoareTripleChecker+Valid, 8805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:40,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3093 Valid, 4260 Invalid, 10829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2024 Valid, 8805 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2022-11-02 21:00:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2022-11-02 21:00:42,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 3565. [2022-11-02 21:00:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 2571 states have (on average 1.6009334889148192) internal successors, (4116), 2755 states have internal predecessors, (4116), 819 states have call successors, (819), 136 states have call predecessors, (819), 174 states have return successors, (1256), 817 states have call predecessors, (1256), 815 states have call successors, (1256) [2022-11-02 21:00:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 6191 transitions. [2022-11-02 21:00:42,332 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 6191 transitions. Word has length 126 [2022-11-02 21:00:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:42,332 INFO L495 AbstractCegarLoop]: Abstraction has 3565 states and 6191 transitions. [2022-11-02 21:00:42,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 21:00:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 6191 transitions. [2022-11-02 21:00:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:00:42,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:42,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:00:42,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:00:42,340 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2036658098, now seen corresponding path program 1 times [2022-11-02 21:00:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:42,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001608950] [2022-11-02 21:00:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:42,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:00:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:00:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:00:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 21:00:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 21:00:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:00:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:00:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 21:00:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 21:00:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:00:42,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:42,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001608950] [2022-11-02 21:00:42,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001608950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:42,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521335747] [2022-11-02 21:00:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:42,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:42,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:42,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:42,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:00:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:43,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:00:43,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:00:43,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:43,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521335747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:43,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:43,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-02 21:00:43,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798843624] [2022-11-02 21:00:43,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:43,261 INFO L87 Difference]: Start difference. First operand 3565 states and 6191 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:45,839 INFO L93 Difference]: Finished difference Result 7991 states and 14207 transitions. [2022-11-02 21:00:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-11-02 21:00:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:45,873 INFO L225 Difference]: With dead ends: 7991 [2022-11-02 21:00:45,873 INFO L226 Difference]: Without dead ends: 4444 [2022-11-02 21:00:45,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:45,892 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 120 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:45,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1887 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2022-11-02 21:00:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3593. [2022-11-02 21:00:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 2595 states have (on average 1.596917148362235) internal successors, (4144), 2779 states have internal predecessors, (4144), 823 states have call successors, (823), 136 states have call predecessors, (823), 174 states have return successors, (1262), 821 states have call predecessors, (1262), 819 states have call successors, (1262) [2022-11-02 21:00:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 6229 transitions. [2022-11-02 21:00:47,502 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 6229 transitions. Word has length 127 [2022-11-02 21:00:47,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:47,502 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 6229 transitions. [2022-11-02 21:00:47,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 6229 transitions. [2022-11-02 21:00:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:00:47,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:47,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:00:47,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:47,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:00:47,724 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1686876525, now seen corresponding path program 1 times [2022-11-02 21:00:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:47,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138149948] [2022-11-02 21:00:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:47,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:00:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:00:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:00:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:00:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 21:00:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:00:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:00:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 21:00:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 21:00:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:00:48,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:48,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138149948] [2022-11-02 21:00:48,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138149948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:48,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:48,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281460844] [2022-11-02 21:00:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:48,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:48,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:48,124 INFO L87 Difference]: Start difference. First operand 3593 states and 6229 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,032 INFO L93 Difference]: Finished difference Result 8162 states and 14475 transitions. [2022-11-02 21:00:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:00:57,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-11-02 21:00:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,112 INFO L225 Difference]: With dead ends: 8162 [2022-11-02 21:00:57,112 INFO L226 Difference]: Without dead ends: 4587 [2022-11-02 21:00:57,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:00:57,129 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 991 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:57,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 2214 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2763 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-02 21:00:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2022-11-02 21:00:58,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 3597. [2022-11-02 21:00:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 2598 states have (on average 1.5958429561200924) internal successors, (4146), 2782 states have internal predecessors, (4146), 823 states have call successors, (823), 138 states have call predecessors, (823), 175 states have return successors, (1252), 820 states have call predecessors, (1252), 819 states have call successors, (1252) [2022-11-02 21:00:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 6221 transitions. [2022-11-02 21:00:58,792 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 6221 transitions. Word has length 127 [2022-11-02 21:00:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:58,793 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 6221 transitions. [2022-11-02 21:00:58,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 21:00:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 6221 transitions. [2022-11-02 21:00:58,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:00:58,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:58,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:00:58,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:00:58,797 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash -440540130, now seen corresponding path program 1 times [2022-11-02 21:00:58,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:58,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972568605] [2022-11-02 21:00:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:58,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:00:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:00:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:00:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:00:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:00:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:00:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:00:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:00:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:00:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:00:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 21:00:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 21:00:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:00:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:59,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972568605] [2022-11-02 21:00:59,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972568605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:59,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093552192] [2022-11-02 21:00:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:59,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:59,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:59,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:00:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:00:59,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:00:59,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:59,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093552192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:59,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:59,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-11-02 21:00:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419521844] [2022-11-02 21:00:59,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:59,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:00:59,886 INFO L87 Difference]: Start difference. First operand 3597 states and 6221 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-02 21:01:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:04,254 INFO L93 Difference]: Finished difference Result 10632 states and 18903 transitions. [2022-11-02 21:01:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2022-11-02 21:01:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:04,287 INFO L225 Difference]: With dead ends: 10632 [2022-11-02 21:01:04,287 INFO L226 Difference]: Without dead ends: 7053 [2022-11-02 21:01:04,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:04,311 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 960 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:04,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 4658 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:01:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2022-11-02 21:01:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 6972. [2022-11-02 21:01:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 4862 states have (on average 1.546688605512135) internal successors, (7520), 5280 states have internal predecessors, (7520), 1788 states have call successors, (1788), 250 states have call predecessors, (1788), 321 states have return successors, (2899), 1777 states have call predecessors, (2899), 1782 states have call successors, (2899) [2022-11-02 21:01:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 12207 transitions. [2022-11-02 21:01:07,885 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 12207 transitions. Word has length 127 [2022-11-02 21:01:07,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:07,885 INFO L495 AbstractCegarLoop]: Abstraction has 6972 states and 12207 transitions. [2022-11-02 21:01:07,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-02 21:01:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 12207 transitions. [2022-11-02 21:01:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 21:01:07,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:07,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:01:07,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:08,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e967a5dd-98d3-4855-82a9-5760cab35caa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:01:08,119 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:08,119 INFO L85 PathProgramCache]: Analyzing trace with hash -494904368, now seen corresponding path program 1 times [2022-11-02 21:01:08,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:08,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178915413] [2022-11-02 21:01:08,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:08,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:01:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:01:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:01:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:01:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:01:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 21:01:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 21:01:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 21:01:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 21:01:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:01:08,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:08,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178915413] [2022-11-02 21:01:08,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178915413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:08,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:08,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:01:08,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165617725] [2022-11-02 21:01:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:08,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:01:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:01:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:08,636 INFO L87 Difference]: Start difference. First operand 6972 states and 12207 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 21:01:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:46,788 INFO L93 Difference]: Finished difference Result 31486 states and 62080 transitions. [2022-11-02 21:01:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:01:46,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2022-11-02 21:01:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:47,084 INFO L225 Difference]: With dead ends: 31486 [2022-11-02 21:01:47,084 INFO L226 Difference]: Without dead ends: 24532 [2022-11-02 21:01:47,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:01:47,150 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 5051 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 8325 mSolverCounterSat, 3015 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5175 SdHoareTripleChecker+Valid, 4460 SdHoareTripleChecker+Invalid, 11340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3015 IncrementalHoareTripleChecker+Valid, 8325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:47,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5175 Valid, 4460 Invalid, 11340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3015 Valid, 8325 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2022-11-02 21:01:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24532 states. [2022-11-02 21:01:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24532 to 12630. [2022-11-02 21:01:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12630 states, 9085 states have (on average 1.541221794166208) internal successors, (14002), 9731 states have internal predecessors, (14002), 2886 states have call successors, (2886), 494 states have call predecessors, (2886), 658 states have return successors, (5331), 2867 states have call predecessors, (5331), 2876 states have call successors, (5331) [2022-11-02 21:01:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12630 states to 12630 states and 22219 transitions. [2022-11-02 21:01:54,424 INFO L78 Accepts]: Start accepts. Automaton has 12630 states and 22219 transitions. Word has length 135 [2022-11-02 21:01:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:54,425 INFO L495 AbstractCegarLoop]: Abstraction has 12630 states and 22219 transitions. [2022-11-02 21:01:54,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 21:01:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 12630 states and 22219 transitions. [2022-11-02 21:01:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-02 21:01:54,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:54,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 21:01:54,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:01:54,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:54,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1317359161, now seen corresponding path program 1 times [2022-11-02 21:01:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:54,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353542686] [2022-11-02 21:01:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:01:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:01:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:01:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:01:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:01:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 21:01:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:01:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 21:01:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:01:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 21:01:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-02 21:01:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:01:54,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:54,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353542686] [2022-11-02 21:01:54,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353542686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:54,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:54,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384156731] [2022-11-02 21:01:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:54,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:54,906 INFO L87 Difference]: Start difference. First operand 12630 states and 22219 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)