./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product03.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_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/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_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/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_5123f7ec-34cd-428a-b1d3-04ed224db1fe/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 ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 --- 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 21:08:12,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:08:12,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:08:12,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:08:12,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:08:12,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:08:12,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:08:12,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:08:12,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:08:12,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:08:12,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:08:12,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:08:12,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:08:12,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:08:12,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:08:12,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:08:12,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:08:12,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:08:12,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:08:12,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:08:12,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:08:12,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:08:12,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:08:12,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:08:12,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:08:12,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:08:12,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:08:12,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:08:12,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:08:12,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:08:12,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:08:12,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:08:12,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:08:12,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:08:12,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:08:12,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:08:12,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:08:12,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:08:12,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:08:12,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:08:12,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:08:12,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:08:12,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:08:12,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:08:12,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:08:12,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:08:12,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:08:12,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:08:12,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:08:12,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:08:12,526 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:08:12,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:08:12,527 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:08:12,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:08:12,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:08:12,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:08:12,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:08:12,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:08:12,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:08:12,529 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:08:12,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:08:12,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:08:12,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:08:12,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:08:12,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:08:12,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:08:12,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:12,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:08:12,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:08:12,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:08:12,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:08:12,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:08:12,532 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:08:12,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:08:12,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:08:12,532 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_5123f7ec-34cd-428a-b1d3-04ed224db1fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 [2022-11-02 21:08:12,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:08:12,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:08:12,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:08:12,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:08:12,897 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:08:12,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-11-02 21:08:12,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/data/f41a8a965/98092ebbf3bf4af7950348649e26c463/FLAGc8e30748b [2022-11-02 21:08:13,621 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:08:13,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-11-02 21:08:13,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/data/f41a8a965/98092ebbf3bf4af7950348649e26c463/FLAGc8e30748b [2022-11-02 21:08:13,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/data/f41a8a965/98092ebbf3bf4af7950348649e26c463 [2022-11-02 21:08:13,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:08:13,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:08:13,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:13,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:08:13,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:08:13,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:13" (1/1) ... [2022-11-02 21:08:13,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237bad84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:13, skipping insertion in model container [2022-11-02 21:08:13,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:13" (1/1) ... [2022-11-02 21:08:13,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:08:13,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:08:14,324 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_5123f7ec-34cd-428a-b1d3-04ed224db1fe/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-11-02 21:08:14,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:14,477 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:08:14,519 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_5123f7ec-34cd-428a-b1d3-04ed224db1fe/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-11-02 21:08:14,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:14,614 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:08:14,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14 WrapperNode [2022-11-02 21:08:14,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:14,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:14,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:08:14,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:08:14,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,692 INFO L138 Inliner]: procedures = 107, calls = 125, calls flagged for inlining = 35, calls inlined = 27, statements flattened = 523 [2022-11-02 21:08:14,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:14,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:08:14,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:08:14,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:08:14,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,773 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:08:14,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:08:14,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:08:14,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:08:14,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (1/1) ... [2022-11-02 21:08:14,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:14,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:14,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:08:14,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:08:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-02 21:08:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-02 21:08:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-02 21:08:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-02 21:08:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-02 21:08:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-02 21:08:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-02 21:08:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-02 21:08:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-02 21:08:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-02 21:08:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-02 21:08:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:08:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-02 21:08:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-02 21:08:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-02 21:08:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-02 21:08:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-02 21:08:14,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-02 21:08:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:08:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:08:14,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:08:15,115 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:08:15,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:08:15,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:08:15,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:08:15,748 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:08:15,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:15 BoogieIcfgContainer [2022-11-02 21:08:15,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:08:15,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:08:15,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:08:15,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:08:15,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:08:13" (1/3) ... [2022-11-02 21:08:15,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cf25d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:15, skipping insertion in model container [2022-11-02 21:08:15,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:14" (2/3) ... [2022-11-02 21:08:15,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cf25d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:15, skipping insertion in model container [2022-11-02 21:08:15,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:15" (3/3) ... [2022-11-02 21:08:15,762 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2022-11-02 21:08:15,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:08:15,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:08:15,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:08:15,882 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;@6417b3b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:08:15,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:08:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 106 states have internal predecessors, (154), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 21:08:15,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:15,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-02 21:08:15,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:15,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1671433298, now seen corresponding path program 1 times [2022-11-02 21:08:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:15,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706133620] [2022-11-02 21:08:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:15,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 21:08:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 21:08:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:08:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:08:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:08:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:08:16,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:16,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706133620] [2022-11-02 21:08:16,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706133620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:16,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754890298] [2022-11-02 21:08:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:16,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:16,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:16,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:16,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:08:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 21:08:17,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:08:17,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:17,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754890298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:17,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:17,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-02 21:08:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525245452] [2022-11-02 21:08:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:17,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:08:17,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:08:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:17,195 INFO L87 Difference]: Start difference. First operand has 127 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 106 states have internal predecessors, (154), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:17,231 INFO L93 Difference]: Finished difference Result 204 states and 279 transitions. [2022-11-02 21:08:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:08:17,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-11-02 21:08:17,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:17,243 INFO L225 Difference]: With dead ends: 204 [2022-11-02 21:08:17,244 INFO L226 Difference]: Without dead ends: 120 [2022-11-02 21:08:17,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:17,251 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:17,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-02 21:08:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-02 21:08:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 99 states have internal predecessors, (143), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 21:08:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2022-11-02 21:08:17,330 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 69 [2022-11-02 21:08:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:17,332 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2022-11-02 21:08:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2022-11-02 21:08:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:08:17,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:17,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:17,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:08:17,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 21:08:17,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:17,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1025509166, now seen corresponding path program 1 times [2022-11-02 21:08:17,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:17,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342299754] [2022-11-02 21:08:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:08:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:08:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 21:08:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 21:08:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:08:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:08:17,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342299754] [2022-11-02 21:08:17,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342299754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373807151] [2022-11-02 21:08:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:17,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:17,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:08:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:08:18,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:08:18,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:18,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373807151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:18,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:18,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-02 21:08:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008117565] [2022-11-02 21:08:18,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:18,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:18,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:18,139 INFO L87 Difference]: Start difference. First operand 120 states and 168 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:18,163 INFO L93 Difference]: Finished difference Result 194 states and 260 transitions. [2022-11-02 21:08:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-02 21:08:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:18,167 INFO L225 Difference]: With dead ends: 194 [2022-11-02 21:08:18,167 INFO L226 Difference]: Without dead ends: 123 [2022-11-02 21:08:18,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:18,169 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:18,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 330 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-02 21:08:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2022-11-02 21:08:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.45) internal successors, (145), 101 states have internal predecessors, (145), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 21:08:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2022-11-02 21:08:18,188 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 70 [2022-11-02 21:08:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:18,189 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2022-11-02 21:08:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2022-11-02 21:08:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 21:08:18,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:18,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:18,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:18,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-02 21:08:18,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1527449369, now seen corresponding path program 1 times [2022-11-02 21:08:18,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:18,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229192108] [2022-11-02 21:08:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:18,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 21:08:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:08:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:08:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:08:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:08:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 21:08:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:08:18,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:18,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229192108] [2022-11-02 21:08:18,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229192108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:18,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859097026] [2022-11-02 21:08:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:18,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:18,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:18,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:18,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:08:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:18,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:08:19,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:19,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859097026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:19,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:19,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-02 21:08:19,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38863934] [2022-11-02 21:08:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:19,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:19,048 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:08:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:19,149 INFO L93 Difference]: Finished difference Result 237 states and 333 transitions. [2022-11-02 21:08:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:19,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-11-02 21:08:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:19,156 INFO L225 Difference]: With dead ends: 237 [2022-11-02 21:08:19,159 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 21:08:19,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:19,164 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 73 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:19,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 559 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 21:08:19,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-02 21:08:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 103 states have internal predecessors, (146), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-02 21:08:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 173 transitions. [2022-11-02 21:08:19,190 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 173 transitions. Word has length 75 [2022-11-02 21:08:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:19,192 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 173 transitions. [2022-11-02 21:08:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:08:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 173 transitions. [2022-11-02 21:08:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 21:08:19,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:19,195 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:19,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:19,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:19,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1719790030, now seen corresponding path program 1 times [2022-11-02 21:08:19,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:19,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371485532] [2022-11-02 21:08:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:08:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 21:08:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 21:08:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 21:08:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:08:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:08:19,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:19,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371485532] [2022-11-02 21:08:19,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371485532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:19,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:19,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:08:19,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411340156] [2022-11-02 21:08:19,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:19,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:08:19,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:08:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:19,610 INFO L87 Difference]: Start difference. First operand 124 states and 173 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:08:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:20,327 INFO L93 Difference]: Finished difference Result 291 states and 410 transitions. [2022-11-02 21:08:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:08:20,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-11-02 21:08:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:20,334 INFO L225 Difference]: With dead ends: 291 [2022-11-02 21:08:20,334 INFO L226 Difference]: Without dead ends: 186 [2022-11-02 21:08:20,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:20,340 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 279 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:20,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 566 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:20,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-02 21:08:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 124. [2022-11-02 21:08:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 103 states have internal predecessors, (146), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-02 21:08:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2022-11-02 21:08:20,378 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 76 [2022-11-02 21:08:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:20,381 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2022-11-02 21:08:20,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:08:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2022-11-02 21:08:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 21:08:20,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:20,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:20,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:08:20,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash -88603257, now seen corresponding path program 2 times [2022-11-02 21:08:20,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:20,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385222938] [2022-11-02 21:08:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:20,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:08:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:08:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:08:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 21:08:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:08:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:08:20,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:20,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385222938] [2022-11-02 21:08:20,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385222938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:20,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:20,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:08:20,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409641692] [2022-11-02 21:08:20,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:20,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:08:20,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:08:20,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:20,612 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:08:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:21,334 INFO L93 Difference]: Finished difference Result 293 states and 413 transitions. [2022-11-02 21:08:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:08:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-11-02 21:08:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:21,340 INFO L225 Difference]: With dead ends: 293 [2022-11-02 21:08:21,341 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:08:21,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:21,342 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 273 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:21,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 571 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:08:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 126. [2022-11-02 21:08:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 105 states have internal predecessors, (147), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 175 transitions. [2022-11-02 21:08:21,384 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 175 transitions. Word has length 77 [2022-11-02 21:08:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:21,385 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 175 transitions. [2022-11-02 21:08:21,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:08:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 175 transitions. [2022-11-02 21:08:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 21:08:21,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:21,394 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:08:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:08:21,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1889424617, now seen corresponding path program 1 times [2022-11-02 21:08:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:21,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466307850] [2022-11-02 21:08:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 21:08:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 21:08:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 21:08:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 21:08:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:08:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:21,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:21,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466307850] [2022-11-02 21:08:21,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466307850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:21,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139047313] [2022-11-02 21:08:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:21,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:21,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:21,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:21,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:08:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:08:21,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:21,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:21,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139047313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:21,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:21,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-11-02 21:08:21,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840724425] [2022-11-02 21:08:21,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:21,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:08:21,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:21,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:08:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:21,897 INFO L87 Difference]: Start difference. First operand 126 states and 175 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 21:08:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:22,546 INFO L93 Difference]: Finished difference Result 373 states and 556 transitions. [2022-11-02 21:08:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:08:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-11-02 21:08:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:22,550 INFO L225 Difference]: With dead ends: 373 [2022-11-02 21:08:22,550 INFO L226 Difference]: Without dead ends: 302 [2022-11-02 21:08:22,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:22,551 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 559 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:22,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 742 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:22,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-02 21:08:22,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 216. [2022-11-02 21:08:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 192 states have (on average 1.625) internal successors, (312), 195 states have internal predecessors, (312), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 340 transitions. [2022-11-02 21:08:22,578 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 340 transitions. Word has length 78 [2022-11-02 21:08:22,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:22,578 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 340 transitions. [2022-11-02 21:08:22,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 21:08:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 340 transitions. [2022-11-02 21:08:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-02 21:08:22,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:22,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:22,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:22,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:22,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash -396408711, now seen corresponding path program 1 times [2022-11-02 21:08:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:22,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638830796] [2022-11-02 21:08:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:08:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:08:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 21:08:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 21:08:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:08:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:22,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:22,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638830796] [2022-11-02 21:08:22,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638830796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:22,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:22,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:22,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772443643] [2022-11-02 21:08:22,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:22,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:22,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:22,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:22,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:22,922 INFO L87 Difference]: Start difference. First operand 216 states and 340 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:23,493 INFO L93 Difference]: Finished difference Result 563 states and 907 transitions. [2022-11-02 21:08:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:23,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-11-02 21:08:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:23,498 INFO L225 Difference]: With dead ends: 563 [2022-11-02 21:08:23,498 INFO L226 Difference]: Without dead ends: 375 [2022-11-02 21:08:23,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:23,500 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 269 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:23,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 498 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-02 21:08:23,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 305. [2022-11-02 21:08:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 281 states have (on average 1.6725978647686832) internal successors, (470), 284 states have internal predecessors, (470), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 498 transitions. [2022-11-02 21:08:23,529 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 498 transitions. Word has length 85 [2022-11-02 21:08:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:23,529 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 498 transitions. [2022-11-02 21:08:23,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 498 transitions. [2022-11-02 21:08:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 21:08:23,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:23,532 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:23,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:08:23,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:23,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1723354495, now seen corresponding path program 1 times [2022-11-02 21:08:23,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:23,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487238700] [2022-11-02 21:08:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:23,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 21:08:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:08:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:08:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 21:08:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 21:08:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:23,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:23,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487238700] [2022-11-02 21:08:23,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487238700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:23,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:23,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:23,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289800574] [2022-11-02 21:08:23,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:23,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:23,631 INFO L87 Difference]: Start difference. First operand 305 states and 498 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:24,221 INFO L93 Difference]: Finished difference Result 756 states and 1257 transitions. [2022-11-02 21:08:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-11-02 21:08:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:24,225 INFO L225 Difference]: With dead ends: 756 [2022-11-02 21:08:24,226 INFO L226 Difference]: Without dead ends: 497 [2022-11-02 21:08:24,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:24,227 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 267 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:24,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 487 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-02 21:08:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 427. [2022-11-02 21:08:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 403 states have (on average 1.7047146401985112) internal successors, (687), 406 states have internal predecessors, (687), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 715 transitions. [2022-11-02 21:08:24,267 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 715 transitions. Word has length 86 [2022-11-02 21:08:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:24,267 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 715 transitions. [2022-11-02 21:08:24,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 715 transitions. [2022-11-02 21:08:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-02 21:08:24,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:24,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:24,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:08:24,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:24,272 INFO L85 PathProgramCache]: Analyzing trace with hash 221443351, now seen corresponding path program 1 times [2022-11-02 21:08:24,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34924507] [2022-11-02 21:08:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:24,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:08:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 21:08:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:08:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:08:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 21:08:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:24,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34924507] [2022-11-02 21:08:24,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34924507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:24,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:24,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796596404] [2022-11-02 21:08:24,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:24,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:24,378 INFO L87 Difference]: Start difference. First operand 427 states and 715 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:24,991 INFO L93 Difference]: Finished difference Result 1078 states and 1828 transitions. [2022-11-02 21:08:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-02 21:08:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:25,000 INFO L225 Difference]: With dead ends: 1078 [2022-11-02 21:08:25,000 INFO L226 Difference]: Without dead ends: 716 [2022-11-02 21:08:25,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:25,004 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 266 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:25,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 493 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-02 21:08:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 646. [2022-11-02 21:08:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 622 states have (on average 1.712218649517685) internal successors, (1065), 625 states have internal predecessors, (1065), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1093 transitions. [2022-11-02 21:08:25,061 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1093 transitions. Word has length 87 [2022-11-02 21:08:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:25,062 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 1093 transitions. [2022-11-02 21:08:25,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1093 transitions. [2022-11-02 21:08:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 21:08:25,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:25,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:08:25,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:25,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1679828301, now seen corresponding path program 1 times [2022-11-02 21:08:25,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:25,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955782074] [2022-11-02 21:08:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:25,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 21:08:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:08:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:08:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:08:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 21:08:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:25,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:25,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955782074] [2022-11-02 21:08:25,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955782074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:25,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:25,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8185057] [2022-11-02 21:08:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:25,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:25,180 INFO L87 Difference]: Start difference. First operand 646 states and 1093 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:25,859 INFO L93 Difference]: Finished difference Result 1600 states and 2738 transitions. [2022-11-02 21:08:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:25,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-11-02 21:08:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:25,865 INFO L225 Difference]: With dead ends: 1600 [2022-11-02 21:08:25,866 INFO L226 Difference]: Without dead ends: 1067 [2022-11-02 21:08:25,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:25,868 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 264 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:25,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 493 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-11-02 21:08:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 997. [2022-11-02 21:08:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 973 states have (on average 1.7081192189105858) internal successors, (1662), 976 states have internal predecessors, (1662), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1690 transitions. [2022-11-02 21:08:25,945 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1690 transitions. Word has length 88 [2022-11-02 21:08:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:25,946 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1690 transitions. [2022-11-02 21:08:25,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1690 transitions. [2022-11-02 21:08:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 21:08:25,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:25,950 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:25,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:08:25,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:25,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -889624779, now seen corresponding path program 1 times [2022-11-02 21:08:25,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:25,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803470622] [2022-11-02 21:08:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 21:08:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 21:08:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:08:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:08:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:08:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:26,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:26,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803470622] [2022-11-02 21:08:26,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803470622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:26,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:26,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:26,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656750633] [2022-11-02 21:08:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:26,068 INFO L87 Difference]: Start difference. First operand 997 states and 1690 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:26,692 INFO L93 Difference]: Finished difference Result 2450 states and 4203 transitions. [2022-11-02 21:08:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-11-02 21:08:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:26,701 INFO L225 Difference]: With dead ends: 2450 [2022-11-02 21:08:26,702 INFO L226 Difference]: Without dead ends: 1646 [2022-11-02 21:08:26,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:26,705 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 262 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:26,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 492 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:26,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-02 21:08:26,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1576. [2022-11-02 21:08:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1552 states have (on average 1.6990979381443299) internal successors, (2637), 1555 states have internal predecessors, (2637), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2665 transitions. [2022-11-02 21:08:26,869 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2665 transitions. Word has length 89 [2022-11-02 21:08:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:26,871 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2665 transitions. [2022-11-02 21:08:26,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2665 transitions. [2022-11-02 21:08:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 21:08:26,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:26,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:26,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:08:26,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1310846161, now seen corresponding path program 1 times [2022-11-02 21:08:26,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:26,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17107] [2022-11-02 21:08:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:26,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:08:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 21:08:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 21:08:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:08:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:08:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:27,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:27,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17107] [2022-11-02 21:08:27,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:27,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:27,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:27,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480254649] [2022-11-02 21:08:27,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:27,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:27,047 INFO L87 Difference]: Start difference. First operand 1576 states and 2665 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:27,732 INFO L93 Difference]: Finished difference Result 3902 states and 6682 transitions. [2022-11-02 21:08:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2022-11-02 21:08:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:27,744 INFO L225 Difference]: With dead ends: 3902 [2022-11-02 21:08:27,744 INFO L226 Difference]: Without dead ends: 2639 [2022-11-02 21:08:27,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:27,750 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 260 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:27,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 491 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-11-02 21:08:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2569. [2022-11-02 21:08:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 2545 states have (on average 1.6884086444007858) internal successors, (4297), 2548 states have internal predecessors, (4297), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 4325 transitions. [2022-11-02 21:08:27,993 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 4325 transitions. Word has length 90 [2022-11-02 21:08:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:27,993 INFO L495 AbstractCegarLoop]: Abstraction has 2569 states and 4325 transitions. [2022-11-02 21:08:27,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 4325 transitions. [2022-11-02 21:08:27,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 21:08:28,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:28,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:08:28,000 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:28,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1626247507, now seen corresponding path program 1 times [2022-11-02 21:08:28,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:28,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531161563] [2022-11-02 21:08:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:08:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 21:08:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 21:08:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 21:08:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:08:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:28,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531161563] [2022-11-02 21:08:28,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531161563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:28,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:28,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913234685] [2022-11-02 21:08:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:28,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:28,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:28,121 INFO L87 Difference]: Start difference. First operand 2569 states and 4325 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:28,921 INFO L93 Difference]: Finished difference Result 6496 states and 11070 transitions. [2022-11-02 21:08:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:28,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-11-02 21:08:28,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:28,941 INFO L225 Difference]: With dead ends: 6496 [2022-11-02 21:08:28,941 INFO L226 Difference]: Without dead ends: 4408 [2022-11-02 21:08:28,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:28,947 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 259 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:28,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 490 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2022-11-02 21:08:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4338. [2022-11-02 21:08:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4314 states have (on average 1.67663421418637) internal successors, (7233), 4317 states have internal predecessors, (7233), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 7261 transitions. [2022-11-02 21:08:29,427 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 7261 transitions. Word has length 91 [2022-11-02 21:08:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:29,428 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 7261 transitions. [2022-11-02 21:08:29,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 7261 transitions. [2022-11-02 21:08:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 21:08:29,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:29,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:29,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:08:29,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:29,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:29,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1889425681, now seen corresponding path program 1 times [2022-11-02 21:08:29,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:29,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665292175] [2022-11-02 21:08:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:29,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 21:08:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 21:08:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 21:08:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 21:08:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:08:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:29,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:29,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665292175] [2022-11-02 21:08:29,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665292175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:29,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:29,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082128156] [2022-11-02 21:08:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:29,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:29,578 INFO L87 Difference]: Start difference. First operand 4338 states and 7261 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:30,607 INFO L93 Difference]: Finished difference Result 11292 states and 19098 transitions. [2022-11-02 21:08:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:30,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-11-02 21:08:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:30,644 INFO L225 Difference]: With dead ends: 11292 [2022-11-02 21:08:30,645 INFO L226 Difference]: Without dead ends: 7659 [2022-11-02 21:08:30,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:30,651 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 256 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:30,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 492 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-11-02 21:08:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 7589. [2022-11-02 21:08:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 7565 states have (on average 1.6629213483146068) internal successors, (12580), 7568 states have internal predecessors, (12580), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 12608 transitions. [2022-11-02 21:08:31,382 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 12608 transitions. Word has length 92 [2022-11-02 21:08:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:31,383 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 12608 transitions. [2022-11-02 21:08:31,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 12608 transitions. [2022-11-02 21:08:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 21:08:31,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:31,398 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:31,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:08:31,399 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash 54984254, now seen corresponding path program 2 times [2022-11-02 21:08:31,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:31,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113709595] [2022-11-02 21:08:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:08:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 21:08:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:08:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 21:08:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:08:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:31,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:31,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113709595] [2022-11-02 21:08:31,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113709595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:31,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:31,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:31,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780548017] [2022-11-02 21:08:31,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:31,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:31,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:31,574 INFO L87 Difference]: Start difference. First operand 7589 states and 12608 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:32,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:32,647 INFO L93 Difference]: Finished difference Result 14103 states and 23561 transitions. [2022-11-02 21:08:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:32,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-11-02 21:08:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:32,685 INFO L225 Difference]: With dead ends: 14103 [2022-11-02 21:08:32,685 INFO L226 Difference]: Without dead ends: 7659 [2022-11-02 21:08:32,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:32,695 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 269 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:32,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 724 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:32,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-11-02 21:08:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 7589. [2022-11-02 21:08:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 7565 states have (on average 1.6448116325181759) internal successors, (12443), 7568 states have internal predecessors, (12443), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 12471 transitions. [2022-11-02 21:08:33,335 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 12471 transitions. Word has length 93 [2022-11-02 21:08:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 12471 transitions. [2022-11-02 21:08:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 12471 transitions. [2022-11-02 21:08:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 21:08:33,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:33,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:33,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:08:33,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:33,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2024778895, now seen corresponding path program 1 times [2022-11-02 21:08:33,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:33,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926486646] [2022-11-02 21:08:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:08:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 21:08:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:08:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 21:08:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:08:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:33,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:33,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926486646] [2022-11-02 21:08:33,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926486646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:33,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:33,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:33,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421466878] [2022-11-02 21:08:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:33,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:33,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:33,457 INFO L87 Difference]: Start difference. First operand 7589 states and 12471 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:35,176 INFO L93 Difference]: Finished difference Result 20366 states and 33702 transitions. [2022-11-02 21:08:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-11-02 21:08:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:35,220 INFO L225 Difference]: With dead ends: 20366 [2022-11-02 21:08:35,220 INFO L226 Difference]: Without dead ends: 13770 [2022-11-02 21:08:35,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:35,231 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 255 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:35,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 490 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13770 states. [2022-11-02 21:08:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13770 to 13700. [2022-11-02 21:08:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13700 states, 13676 states have (on average 1.626718338695525) internal successors, (22247), 13679 states have internal predecessors, (22247), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13700 states to 13700 states and 22275 transitions. [2022-11-02 21:08:36,166 INFO L78 Accepts]: Start accepts. Automaton has 13700 states and 22275 transitions. Word has length 93 [2022-11-02 21:08:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:36,166 INFO L495 AbstractCegarLoop]: Abstraction has 13700 states and 22275 transitions. [2022-11-02 21:08:36,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 13700 states and 22275 transitions. [2022-11-02 21:08:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 21:08:36,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:36,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:36,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:08:36,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:36,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash 522393331, now seen corresponding path program 1 times [2022-11-02 21:08:36,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:36,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700083143] [2022-11-02 21:08:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:36,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 21:08:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 21:08:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:08:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 21:08:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:08:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:36,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700083143] [2022-11-02 21:08:36,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700083143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:36,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:36,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035289552] [2022-11-02 21:08:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:36,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:36,299 INFO L87 Difference]: Start difference. First operand 13700 states and 22275 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:38,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:38,084 INFO L93 Difference]: Finished difference Result 37778 states and 61674 transitions. [2022-11-02 21:08:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:38,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-11-02 21:08:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:38,196 INFO L225 Difference]: With dead ends: 37778 [2022-11-02 21:08:38,196 INFO L226 Difference]: Without dead ends: 25431 [2022-11-02 21:08:38,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:38,222 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 251 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:38,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 494 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25431 states. [2022-11-02 21:08:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25431 to 25361. [2022-11-02 21:08:40,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25361 states, 25337 states have (on average 1.605083474760232) internal successors, (40668), 25340 states have internal predecessors, (40668), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25361 states to 25361 states and 40696 transitions. [2022-11-02 21:08:40,545 INFO L78 Accepts]: Start accepts. Automaton has 25361 states and 40696 transitions. Word has length 94 [2022-11-02 21:08:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:40,546 INFO L495 AbstractCegarLoop]: Abstraction has 25361 states and 40696 transitions. [2022-11-02 21:08:40,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:40,546 INFO L276 IsEmpty]: Start isEmpty. Operand 25361 states and 40696 transitions. [2022-11-02 21:08:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 21:08:40,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:40,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:40,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:08:40,580 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1876725135, now seen corresponding path program 1 times [2022-11-02 21:08:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994808566] [2022-11-02 21:08:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 21:08:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 21:08:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:08:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:08:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 21:08:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:40,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:40,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994808566] [2022-11-02 21:08:40,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994808566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:40,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:40,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:40,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198783412] [2022-11-02 21:08:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:40,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:40,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:40,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:40,692 INFO L87 Difference]: Start difference. First operand 25361 states and 40696 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:43,398 INFO L93 Difference]: Finished difference Result 47931 states and 76785 transitions. [2022-11-02 21:08:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2022-11-02 21:08:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:43,573 INFO L225 Difference]: With dead ends: 47931 [2022-11-02 21:08:43,573 INFO L226 Difference]: Without dead ends: 47860 [2022-11-02 21:08:43,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:43,588 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 250 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:43,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 491 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47860 states. [2022-11-02 21:08:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47860 to 47790. [2022-11-02 21:08:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47790 states, 47766 states have (on average 1.580119750450111) internal successors, (75476), 47769 states have internal predecessors, (75476), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 21:08:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47790 states to 47790 states and 75504 transitions. [2022-11-02 21:08:46,640 INFO L78 Accepts]: Start accepts. Automaton has 47790 states and 75504 transitions. Word has length 95 [2022-11-02 21:08:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:46,641 INFO L495 AbstractCegarLoop]: Abstraction has 47790 states and 75504 transitions. [2022-11-02 21:08:46,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:08:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 47790 states and 75504 transitions. [2022-11-02 21:08:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-02 21:08:46,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:46,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:46,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:08:46,672 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash -206672683, now seen corresponding path program 1 times [2022-11-02 21:08:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:46,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000288856] [2022-11-02 21:08:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 21:08:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 21:08:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:08:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:08:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 21:08:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:08:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000288856] [2022-11-02 21:08:47,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000288856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444287114] [2022-11-02 21:08:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:47,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:47,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:47,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:08:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:47,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:08:47,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:08:47,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:47,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444287114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:47,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:47,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-11-02 21:08:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701305986] [2022-11-02 21:08:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:08:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:08:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:08:47,885 INFO L87 Difference]: Start difference. First operand 47790 states and 75504 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-02 21:08:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:51,429 INFO L93 Difference]: Finished difference Result 48000 states and 75766 transitions. [2022-11-02 21:08:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:08:51,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 96 [2022-11-02 21:08:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:51,695 INFO L225 Difference]: With dead ends: 48000 [2022-11-02 21:08:51,695 INFO L226 Difference]: Without dead ends: 47935 [2022-11-02 21:08:51,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 21:08:51,707 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 378 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:51,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1618 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:51,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47935 states. [2022-11-02 21:08:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47935 to 47884. [2022-11-02 21:08:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47884 states, 47840 states have (on average 1.5796822742474916) internal successors, (75572), 47844 states have internal predecessors, (75572), 23 states have call successors, (23), 15 states have call predecessors, (23), 20 states have return successors, (30), 24 states have call predecessors, (30), 21 states have call successors, (30) [2022-11-02 21:08:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47884 states to 47884 states and 75625 transitions. [2022-11-02 21:08:55,620 INFO L78 Accepts]: Start accepts. Automaton has 47884 states and 75625 transitions. Word has length 96 [2022-11-02 21:08:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:55,620 INFO L495 AbstractCegarLoop]: Abstraction has 47884 states and 75625 transitions. [2022-11-02 21:08:55,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-02 21:08:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 47884 states and 75625 transitions. [2022-11-02 21:08:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 21:08:55,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:55,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:55,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:55,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5123f7ec-34cd-428a-b1d3-04ed224db1fe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:55,867 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1817903000, now seen corresponding path program 1 times [2022-11-02 21:08:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:55,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233533358] [2022-11-02 21:08:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:55,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:08:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:08:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 21:08:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 21:08:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:08:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:08:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 21:08:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:08:56,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:56,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233533358] [2022-11-02 21:08:56,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233533358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:56,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:56,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:08:56,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868191601] [2022-11-02 21:08:56,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:56,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:08:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:08:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:56,271 INFO L87 Difference]: Start difference. First operand 47884 states and 75625 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:09:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:03,025 INFO L93 Difference]: Finished difference Result 94505 states and 149401 transitions. [2022-11-02 21:09:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:09:03,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-11-02 21:09:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:03,349 INFO L225 Difference]: With dead ends: 94505 [2022-11-02 21:09:03,350 INFO L226 Difference]: Without dead ends: 94355 [2022-11-02 21:09:03,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:09:03,375 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 546 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:03,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 638 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:09:03,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94355 states.