./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/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_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/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_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:16:48,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:16:48,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:16:48,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:16:48,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:16:48,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:16:48,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:16:48,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:16:48,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:16:48,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:16:48,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:16:48,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:16:48,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:16:48,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:16:48,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:16:48,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:16:48,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:16:48,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:16:48,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:16:48,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:16:48,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:16:48,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:16:48,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:16:48,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:16:48,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:16:48,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:16:48,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:16:48,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:16:48,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:16:48,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:16:48,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:16:48,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:16:48,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:16:48,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:16:48,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:16:48,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:16:48,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:16:48,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:16:48,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:16:48,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:16:48,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:16:48,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:16:48,749 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:16:48,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:16:48,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:16:48,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:16:48,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:16:48,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:16:48,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:16:48,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:16:48,754 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:16:48,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:16:48,755 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:16:48,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:16:48,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:16:48,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:16:48,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:16:48,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:16:48,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:16:48,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:16:48,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:16:48,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:16:48,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:16:48,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:16:48,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:16:48,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:16:48,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:16:48,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:16:48,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:16:48,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:16:48,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:16:48,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:16:48,762 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:16:48,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:16:48,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:16:48,763 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_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2022-11-02 20:16:49,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:16:49,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:16:49,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:16:49,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:16:49,088 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:16:49,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2022-11-02 20:16:49,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/data/3c206fb69/b0cb14f5d78b471ca52bb621e93acbe9/FLAG0610e2bf9 [2022-11-02 20:16:49,879 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:16:49,879 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2022-11-02 20:16:49,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/data/3c206fb69/b0cb14f5d78b471ca52bb621e93acbe9/FLAG0610e2bf9 [2022-11-02 20:16:50,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/data/3c206fb69/b0cb14f5d78b471ca52bb621e93acbe9 [2022-11-02 20:16:50,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:16:50,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:16:50,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:50,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:16:50,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:16:50,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:50,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b8c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50, skipping insertion in model container [2022-11-02 20:16:50,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:50,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:16:50,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:16:50,478 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_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2022-11-02 20:16:50,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:50,829 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:16:50,844 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_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2022-11-02 20:16:50,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:50,996 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:16:50,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50 WrapperNode [2022-11-02 20:16:50,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:50,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:50,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:16:50,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:16:51,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,127 INFO L138 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 864 [2022-11-02 20:16:51,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:51,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:16:51,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:16:51,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:16:51,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:16:51,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:16:51,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:16:51,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:16:51,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (1/1) ... [2022-11-02 20:16:51,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:16:51,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:51,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:16:51,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:16:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:16:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-02 20:16:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-02 20:16:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-02 20:16:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-02 20:16:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-02 20:16:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-02 20:16:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-02 20:16:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-02 20:16:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-02 20:16:51,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-02 20:16:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-02 20:16:51,353 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-02 20:16:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-02 20:16:51,354 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-02 20:16:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-02 20:16:51,354 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-02 20:16:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-02 20:16:51,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-02 20:16:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-02 20:16:51,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-02 20:16:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-02 20:16:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-02 20:16:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-02 20:16:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-02 20:16:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-02 20:16:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-02 20:16:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-02 20:16:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-02 20:16:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-02 20:16:51,358 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-02 20:16:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-02 20:16:51,358 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-02 20:16:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-02 20:16:51,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-02 20:16:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-02 20:16:51,359 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-02 20:16:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-11-02 20:16:51,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-11-02 20:16:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:16:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-02 20:16:51,360 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-02 20:16:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-02 20:16:51,361 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-02 20:16:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-02 20:16:51,361 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-02 20:16:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-02 20:16:51,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-02 20:16:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:16:51,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:16:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-02 20:16:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-02 20:16:51,574 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:16:51,577 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:16:53,293 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:16:53,319 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:16:53,321 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:16:53,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:53 BoogieIcfgContainer [2022-11-02 20:16:53,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:16:53,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:16:53,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:16:53,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:16:53,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:16:50" (1/3) ... [2022-11-02 20:16:53,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26713ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:53, skipping insertion in model container [2022-11-02 20:16:53,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:50" (2/3) ... [2022-11-02 20:16:53,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26713ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:53, skipping insertion in model container [2022-11-02 20:16:53,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:53" (3/3) ... [2022-11-02 20:16:53,339 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2022-11-02 20:16:53,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:16:53,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:16:53,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:16:53,481 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;@47125bc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:16:53,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:16:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-02 20:16:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:16:53,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:53,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:53,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1610874664, now seen corresponding path program 1 times [2022-11-02 20:16:53,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:53,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785121169] [2022-11-02 20:16:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:16:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:16:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:54,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:16:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:16:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:16:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:16:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:16:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:16:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:16:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:16:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:16:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:55,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:55,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785121169] [2022-11-02 20:16:55,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785121169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:55,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:55,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:16:55,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864488741] [2022-11-02 20:16:55,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:55,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:16:55,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:55,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:16:55,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:16:55,547 INFO L87 Difference]: Start difference. First operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:17:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:09,170 INFO L93 Difference]: Finished difference Result 1531 states and 2639 transitions. [2022-11-02 20:17:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:17:09,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-11-02 20:17:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:09,202 INFO L225 Difference]: With dead ends: 1531 [2022-11-02 20:17:09,203 INFO L226 Difference]: Without dead ends: 980 [2022-11-02 20:17:09,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:17:09,220 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 1471 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 5593 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 6259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 5593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:09,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 3687 Invalid, 6259 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [666 Valid, 5593 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-02 20:17:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-02 20:17:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 558. [2022-11-02 20:17:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 442 states have (on average 1.6900452488687783) internal successors, (747), 461 states have internal predecessors, (747), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-02 20:17:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 926 transitions. [2022-11-02 20:17:09,575 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 926 transitions. Word has length 90 [2022-11-02 20:17:09,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:09,576 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 926 transitions. [2022-11-02 20:17:09,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-02 20:17:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 926 transitions. [2022-11-02 20:17:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-02 20:17:09,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:09,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:09,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:17:09,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1078497272, now seen corresponding path program 1 times [2022-11-02 20:17:09,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:09,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053139719] [2022-11-02 20:17:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:09,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:17:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:17:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:17:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:17:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:17:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:17:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:17:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:17:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:10,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053139719] [2022-11-02 20:17:10,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053139719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:10,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:10,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:17:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372717832] [2022-11-02 20:17:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:10,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:17:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:17:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:17:10,644 INFO L87 Difference]: Start difference. First operand 558 states and 926 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:23,253 INFO L93 Difference]: Finished difference Result 1369 states and 2312 transitions. [2022-11-02 20:17:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:17:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2022-11-02 20:17:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:23,265 INFO L225 Difference]: With dead ends: 1369 [2022-11-02 20:17:23,265 INFO L226 Difference]: Without dead ends: 829 [2022-11-02 20:17:23,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:17:23,272 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 1030 mSDsluCounter, 4170 mSDsCounter, 0 mSdLazyCounter, 7559 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 5123 SdHoareTripleChecker+Invalid, 7870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 7559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:23,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 5123 Invalid, 7870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [311 Valid, 7559 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-02 20:17:23,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-02 20:17:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 565. [2022-11-02 20:17:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.680089485458613) internal successors, (751), 466 states have internal predecessors, (751), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2022-11-02 20:17:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 935 transitions. [2022-11-02 20:17:23,465 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 935 transitions. Word has length 96 [2022-11-02 20:17:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:23,466 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 935 transitions. [2022-11-02 20:17:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 935 transitions. [2022-11-02 20:17:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:17:23,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:23,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:23,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:17:23,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1811433455, now seen corresponding path program 1 times [2022-11-02 20:17:23,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:23,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451764956] [2022-11-02 20:17:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:17:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:17:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:17:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:17:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:17:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:17:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:17:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:17:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:17:24,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:24,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451764956] [2022-11-02 20:17:24,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451764956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:24,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:24,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:17:24,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151658670] [2022-11-02 20:17:24,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:17:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:17:24,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:17:24,221 INFO L87 Difference]: Start difference. First operand 565 states and 935 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:31,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:31,022 INFO L93 Difference]: Finished difference Result 1355 states and 2274 transitions. [2022-11-02 20:17:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:17:31,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-11-02 20:17:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:31,031 INFO L225 Difference]: With dead ends: 1355 [2022-11-02 20:17:31,031 INFO L226 Difference]: Without dead ends: 808 [2022-11-02 20:17:31,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:17:31,036 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 1876 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:31,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 2125 Invalid, 2884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-02 20:17:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-02 20:17:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 565. [2022-11-02 20:17:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.6778523489932886) internal successors, (750), 466 states have internal predecessors, (750), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2022-11-02 20:17:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 934 transitions. [2022-11-02 20:17:31,247 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 934 transitions. Word has length 98 [2022-11-02 20:17:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:31,247 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 934 transitions. [2022-11-02 20:17:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 934 transitions. [2022-11-02 20:17:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-02 20:17:31,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:31,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:31,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:17:31,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1526586216, now seen corresponding path program 1 times [2022-11-02 20:17:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:31,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925361302] [2022-11-02 20:17:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:31,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:17:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:17:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:17:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:17:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:17:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:17:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:17:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:17:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:17:31,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:31,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925361302] [2022-11-02 20:17:31,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925361302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:31,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:31,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:17:31,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305764849] [2022-11-02 20:17:31,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:31,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:17:31,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:31,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:17:31,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:17:31,910 INFO L87 Difference]: Start difference. First operand 565 states and 934 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:39,433 INFO L93 Difference]: Finished difference Result 1355 states and 2273 transitions. [2022-11-02 20:17:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:17:39,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-11-02 20:17:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:39,442 INFO L225 Difference]: With dead ends: 1355 [2022-11-02 20:17:39,443 INFO L226 Difference]: Without dead ends: 808 [2022-11-02 20:17:39,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:17:39,448 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 960 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 2849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:39,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 2229 Invalid, 2849 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-02 20:17:39,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-02 20:17:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 565. [2022-11-02 20:17:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.6756152125279642) internal successors, (749), 466 states have internal predecessors, (749), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2022-11-02 20:17:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 933 transitions. [2022-11-02 20:17:39,629 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 933 transitions. Word has length 99 [2022-11-02 20:17:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:39,631 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 933 transitions. [2022-11-02 20:17:39,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 933 transitions. [2022-11-02 20:17:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-02 20:17:39,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:39,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:39,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:17:39,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1389275509, now seen corresponding path program 1 times [2022-11-02 20:17:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:39,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4574108] [2022-11-02 20:17:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:39,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:39,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:17:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:17:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:17:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:17:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:17:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:17:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:17:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:17:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:17:40,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:40,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4574108] [2022-11-02 20:17:40,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4574108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:40,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:40,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:17:40,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044368969] [2022-11-02 20:17:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:40,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:17:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:17:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:17:40,249 INFO L87 Difference]: Start difference. First operand 565 states and 933 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:46,947 INFO L93 Difference]: Finished difference Result 1355 states and 2272 transitions. [2022-11-02 20:17:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:17:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2022-11-02 20:17:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:46,955 INFO L225 Difference]: With dead ends: 1355 [2022-11-02 20:17:46,955 INFO L226 Difference]: Without dead ends: 808 [2022-11-02 20:17:46,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:17:46,962 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1419 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:46,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 2158 Invalid, 2790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [409 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-02 20:17:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-02 20:17:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 565. [2022-11-02 20:17:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.6733780760626398) internal successors, (748), 466 states have internal predecessors, (748), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2022-11-02 20:17:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 932 transitions. [2022-11-02 20:17:47,169 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 932 transitions. Word has length 100 [2022-11-02 20:17:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:47,170 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 932 transitions. [2022-11-02 20:17:47,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:47,171 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 932 transitions. [2022-11-02 20:17:47,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:17:47,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:47,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:47,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:17:47,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash -890905484, now seen corresponding path program 1 times [2022-11-02 20:17:47,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:47,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730469903] [2022-11-02 20:17:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:17:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:17:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:17:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:17:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:17:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:17:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:17:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:17:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:17:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:17:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:17:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:17:48,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:48,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730469903] [2022-11-02 20:17:48,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730469903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:48,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:48,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:17:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593029205] [2022-11-02 20:17:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:17:48,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:17:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:17:48,265 INFO L87 Difference]: Start difference. First operand 565 states and 932 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:59,781 INFO L93 Difference]: Finished difference Result 1343 states and 2253 transitions. [2022-11-02 20:17:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:17:59,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2022-11-02 20:17:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:59,789 INFO L225 Difference]: With dead ends: 1343 [2022-11-02 20:17:59,790 INFO L226 Difference]: Without dead ends: 836 [2022-11-02 20:17:59,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:17:59,820 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 1073 mSDsluCounter, 4618 mSDsCounter, 0 mSdLazyCounter, 8402 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 5523 SdHoareTripleChecker+Invalid, 8762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 8402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:59,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 5523 Invalid, 8762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [360 Valid, 8402 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-02 20:17:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-02 20:17:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 566. [2022-11-02 20:17:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 448 states have (on average 1.6607142857142858) internal successors, (744), 466 states have internal predecessors, (744), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2022-11-02 20:17:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 928 transitions. [2022-11-02 20:17:59,979 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 928 transitions. Word has length 101 [2022-11-02 20:17:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:59,980 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 928 transitions. [2022-11-02 20:17:59,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:17:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 928 transitions. [2022-11-02 20:17:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 20:17:59,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:59,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:59,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:17:59,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:17:59,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:59,986 INFO L85 PathProgramCache]: Analyzing trace with hash 251640511, now seen corresponding path program 1 times [2022-11-02 20:17:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:59,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750210939] [2022-11-02 20:17:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:18:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:18:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:18:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:18:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:18:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:18:00,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:00,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750210939] [2022-11-02 20:18:00,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750210939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:00,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:00,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:18:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625598160] [2022-11-02 20:18:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:00,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:18:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:18:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:18:00,948 INFO L87 Difference]: Start difference. First operand 566 states and 928 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:09,091 INFO L93 Difference]: Finished difference Result 1330 states and 2228 transitions. [2022-11-02 20:18:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:18:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-02 20:18:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:09,099 INFO L225 Difference]: With dead ends: 1330 [2022-11-02 20:18:09,100 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 20:18:09,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:18:09,111 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 1972 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 5548 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 6187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 5548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:09,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 3772 Invalid, 6187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [639 Valid, 5548 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-02 20:18:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 20:18:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 569. [2022-11-02 20:18:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 451 states have (on average 1.647450110864745) internal successors, (743), 469 states have internal predecessors, (743), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2022-11-02 20:18:09,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 927 transitions. [2022-11-02 20:18:09,309 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 927 transitions. Word has length 102 [2022-11-02 20:18:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:09,310 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 927 transitions. [2022-11-02 20:18:09,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 927 transitions. [2022-11-02 20:18:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:18:09,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:09,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:09,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:18:09,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:09,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1057939171, now seen corresponding path program 1 times [2022-11-02 20:18:09,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:09,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753182737] [2022-11-02 20:18:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:09,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:18:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:18:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:18:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:18:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:18:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:18:10,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:10,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753182737] [2022-11-02 20:18:10,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753182737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:10,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633225536] [2022-11-02 20:18:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:10,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:10,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:10,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:10,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:18:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:10,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:18:10,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:18:10,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:10,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633225536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:10,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:10,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 16 [2022-11-02 20:18:10,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44720002] [2022-11-02 20:18:10,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:18:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:18:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:18:10,817 INFO L87 Difference]: Start difference. First operand 569 states and 927 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:11,523 INFO L93 Difference]: Finished difference Result 1521 states and 2538 transitions. [2022-11-02 20:18:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:18:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-11-02 20:18:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:11,538 INFO L225 Difference]: With dead ends: 1521 [2022-11-02 20:18:11,538 INFO L226 Difference]: Without dead ends: 1024 [2022-11-02 20:18:11,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:18:11,544 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 841 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:11,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1780 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:18:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-11-02 20:18:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1009. [2022-11-02 20:18:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 795 states have (on average 1.6327044025157234) internal successors, (1298), 826 states have internal predecessors, (1298), 167 states have call successors, (167), 43 states have call predecessors, (167), 46 states have return successors, (191), 165 states have call predecessors, (191), 162 states have call successors, (191) [2022-11-02 20:18:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1656 transitions. [2022-11-02 20:18:11,928 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1656 transitions. Word has length 106 [2022-11-02 20:18:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:11,930 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1656 transitions. [2022-11-02 20:18:11,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1656 transitions. [2022-11-02 20:18:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-02 20:18:11,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:11,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:11,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:12,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:12,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:12,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1105547155, now seen corresponding path program 1 times [2022-11-02 20:18:12,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:12,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182154358] [2022-11-02 20:18:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:18:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:18:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:18:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:18:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:18:12,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182154358] [2022-11-02 20:18:12,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182154358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:12,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:12,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:18:12,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485805029] [2022-11-02 20:18:12,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:12,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:18:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:18:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:18:12,977 INFO L87 Difference]: Start difference. First operand 1009 states and 1656 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:21,445 INFO L93 Difference]: Finished difference Result 2363 states and 3960 transitions. [2022-11-02 20:18:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:18:21,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-11-02 20:18:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:21,460 INFO L225 Difference]: With dead ends: 2363 [2022-11-02 20:18:21,460 INFO L226 Difference]: Without dead ends: 1412 [2022-11-02 20:18:21,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:21,467 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1031 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 4123 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 4437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 4123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:21,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 2988 Invalid, 4437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [314 Valid, 4123 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-02 20:18:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-11-02 20:18:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1051. [2022-11-02 20:18:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 831 states have (on average 1.628158844765343) internal successors, (1353), 862 states have internal predecessors, (1353), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2022-11-02 20:18:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1722 transitions. [2022-11-02 20:18:21,940 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1722 transitions. Word has length 107 [2022-11-02 20:18:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:21,941 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1722 transitions. [2022-11-02 20:18:21,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1722 transitions. [2022-11-02 20:18:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 20:18:21,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:21,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:21,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:18:21,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:21,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash 304333944, now seen corresponding path program 1 times [2022-11-02 20:18:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:21,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705693274] [2022-11-02 20:18:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 20:18:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:18:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:18:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:18:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:18:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:22,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705693274] [2022-11-02 20:18:22,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705693274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:22,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:22,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:18:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065845326] [2022-11-02 20:18:22,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:22,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:18:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:22,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:18:22,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:18:22,740 INFO L87 Difference]: Start difference. First operand 1051 states and 1722 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:31,059 INFO L93 Difference]: Finished difference Result 2405 states and 4026 transitions. [2022-11-02 20:18:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:18:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-11-02 20:18:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:31,071 INFO L225 Difference]: With dead ends: 2405 [2022-11-02 20:18:31,071 INFO L226 Difference]: Without dead ends: 1412 [2022-11-02 20:18:31,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:31,078 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1046 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 4088 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 4088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:31,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 3039 Invalid, 4386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [298 Valid, 4088 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-02 20:18:31,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-11-02 20:18:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1051. [2022-11-02 20:18:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 831 states have (on average 1.6221419975932612) internal successors, (1348), 862 states have internal predecessors, (1348), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2022-11-02 20:18:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1717 transitions. [2022-11-02 20:18:31,497 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1717 transitions. Word has length 108 [2022-11-02 20:18:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:31,497 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1717 transitions. [2022-11-02 20:18:31,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1717 transitions. [2022-11-02 20:18:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 20:18:31,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:31,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:31,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:18:31,503 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1427762777, now seen corresponding path program 1 times [2022-11-02 20:18:31,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:31,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029133893] [2022-11-02 20:18:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 20:18:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:18:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:18:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:18:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:18:32,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:32,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029133893] [2022-11-02 20:18:32,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029133893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:32,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:32,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:18:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304758017] [2022-11-02 20:18:32,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:32,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:18:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:32,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:18:32,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:18:32,175 INFO L87 Difference]: Start difference. First operand 1051 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:39,378 INFO L93 Difference]: Finished difference Result 2420 states and 4041 transitions. [2022-11-02 20:18:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:18:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-11-02 20:18:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:39,394 INFO L225 Difference]: With dead ends: 2420 [2022-11-02 20:18:39,394 INFO L226 Difference]: Without dead ends: 1433 [2022-11-02 20:18:39,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:39,400 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 1935 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:39,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 2061 Invalid, 2807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [571 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-02 20:18:39,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2022-11-02 20:18:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1053. [2022-11-02 20:18:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 833 states have (on average 1.6206482593037215) internal successors, (1350), 864 states have internal predecessors, (1350), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2022-11-02 20:18:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1719 transitions. [2022-11-02 20:18:39,764 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1719 transitions. Word has length 108 [2022-11-02 20:18:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:39,765 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1719 transitions. [2022-11-02 20:18:39,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:39,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1719 transitions. [2022-11-02 20:18:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:18:39,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:39,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:39,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:18:39,770 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1583620142, now seen corresponding path program 1 times [2022-11-02 20:18:39,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:39,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356247757] [2022-11-02 20:18:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:39,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:18:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:18:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:18:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:18:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:18:40,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:40,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356247757] [2022-11-02 20:18:40,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356247757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:40,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:40,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:18:40,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725629416] [2022-11-02 20:18:40,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:40,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:18:40,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:18:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:18:40,491 INFO L87 Difference]: Start difference. First operand 1053 states and 1719 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:48,699 INFO L93 Difference]: Finished difference Result 2411 states and 4027 transitions. [2022-11-02 20:18:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:18:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-02 20:18:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:48,711 INFO L225 Difference]: With dead ends: 2411 [2022-11-02 20:18:48,711 INFO L226 Difference]: Without dead ends: 1416 [2022-11-02 20:18:48,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:48,717 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1043 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 4058 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 4346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 4058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:48,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 3039 Invalid, 4346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [288 Valid, 4058 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-02 20:18:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2022-11-02 20:18:49,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1053. [2022-11-02 20:18:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 833 states have (on average 1.6146458583433374) internal successors, (1345), 864 states have internal predecessors, (1345), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2022-11-02 20:18:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1714 transitions. [2022-11-02 20:18:49,077 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1714 transitions. Word has length 109 [2022-11-02 20:18:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:49,078 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1714 transitions. [2022-11-02 20:18:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1714 transitions. [2022-11-02 20:18:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:18:49,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:49,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:49,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:18:49,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1551503601, now seen corresponding path program 1 times [2022-11-02 20:18:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:49,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803469086] [2022-11-02 20:18:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:18:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:18:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:18:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:18:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:18:49,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:49,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803469086] [2022-11-02 20:18:49,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803469086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:49,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:49,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:18:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127926440] [2022-11-02 20:18:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:18:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:18:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:18:49,709 INFO L87 Difference]: Start difference. First operand 1053 states and 1714 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:57,104 INFO L93 Difference]: Finished difference Result 2424 states and 4038 transitions. [2022-11-02 20:18:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:18:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-02 20:18:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:57,114 INFO L225 Difference]: With dead ends: 2424 [2022-11-02 20:18:57,114 INFO L226 Difference]: Without dead ends: 1437 [2022-11-02 20:18:57,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:57,119 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1014 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:57,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 2212 Invalid, 2711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [269 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-02 20:18:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2022-11-02 20:18:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1056. [2022-11-02 20:18:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 836 states have (on average 1.61244019138756) internal successors, (1348), 867 states have internal predecessors, (1348), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2022-11-02 20:18:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1717 transitions. [2022-11-02 20:18:57,534 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1717 transitions. Word has length 109 [2022-11-02 20:18:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:57,535 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1717 transitions. [2022-11-02 20:18:57,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1717 transitions. [2022-11-02 20:18:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:18:57,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:57,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:57,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:18:57,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:57,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:57,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1669717437, now seen corresponding path program 1 times [2022-11-02 20:18:57,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:57,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706851489] [2022-11-02 20:18:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:57,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:18:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:57,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:18:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:18:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:18:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:18:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:18:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:18:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:18:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:18:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:18:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:18:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:18:58,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:58,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706851489] [2022-11-02 20:18:58,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706851489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:58,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:58,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:18:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863668791] [2022-11-02 20:18:58,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:58,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:18:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:18:58,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:18:58,198 INFO L87 Difference]: Start difference. First operand 1056 states and 1717 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 20:19:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:07,071 INFO L93 Difference]: Finished difference Result 2428 states and 4044 transitions. [2022-11-02 20:19:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:19:07,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-11-02 20:19:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:07,092 INFO L225 Difference]: With dead ends: 2428 [2022-11-02 20:19:07,092 INFO L226 Difference]: Without dead ends: 1444 [2022-11-02 20:19:07,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:19:07,100 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 1963 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 6257 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 6817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 6257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:07,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 4320 Invalid, 6817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [560 Valid, 6257 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-02 20:19:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-11-02 20:19:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1067. [2022-11-02 20:19:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 844 states have (on average 1.6101895734597156) internal successors, (1359), 877 states have internal predecessors, (1359), 172 states have call successors, (172), 43 states have call predecessors, (172), 50 states have return successors, (201), 170 states have call predecessors, (201), 167 states have call successors, (201) [2022-11-02 20:19:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1732 transitions. [2022-11-02 20:19:07,464 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1732 transitions. Word has length 110 [2022-11-02 20:19:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:07,465 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1732 transitions. [2022-11-02 20:19:07,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 20:19:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1732 transitions. [2022-11-02 20:19:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:19:07,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:07,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:19:07,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:07,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1181118558, now seen corresponding path program 1 times [2022-11-02 20:19:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292911496] [2022-11-02 20:19:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:19:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:19:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:19:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:19:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:19:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:19:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:19:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:19:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:08,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292911496] [2022-11-02 20:19:08,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292911496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:08,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:08,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:19:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864648308] [2022-11-02 20:19:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:08,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:19:08,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:08,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:19:08,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:08,109 INFO L87 Difference]: Start difference. First operand 1067 states and 1732 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:19:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:16,204 INFO L93 Difference]: Finished difference Result 2451 states and 4075 transitions. [2022-11-02 20:19:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:19:16,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-11-02 20:19:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:16,217 INFO L225 Difference]: With dead ends: 2451 [2022-11-02 20:19:16,217 INFO L226 Difference]: Without dead ends: 1461 [2022-11-02 20:19:16,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:19:16,224 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1008 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:16,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 2209 Invalid, 2712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-02 20:19:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2022-11-02 20:19:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1071. [2022-11-02 20:19:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 848 states have (on average 1.6061320754716981) internal successors, (1362), 881 states have internal predecessors, (1362), 172 states have call successors, (172), 43 states have call predecessors, (172), 50 states have return successors, (201), 170 states have call predecessors, (201), 167 states have call successors, (201) [2022-11-02 20:19:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1735 transitions. [2022-11-02 20:19:16,676 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1735 transitions. Word has length 110 [2022-11-02 20:19:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:16,677 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1735 transitions. [2022-11-02 20:19:16,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:19:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1735 transitions. [2022-11-02 20:19:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:19:16,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:16,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:16,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:19:16,682 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:16,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1227962942, now seen corresponding path program 1 times [2022-11-02 20:19:16,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:16,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506145411] [2022-11-02 20:19:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:16,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:16,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:19:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:19:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:19:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:19:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:19:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:19:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:19:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:19:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:17,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506145411] [2022-11-02 20:19:17,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506145411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:17,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:17,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:19:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811477536] [2022-11-02 20:19:17,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:17,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:19:17,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:17,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:19:17,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:17,246 INFO L87 Difference]: Start difference. First operand 1071 states and 1735 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:19:24,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:24,757 INFO L93 Difference]: Finished difference Result 2493 states and 4118 transitions. [2022-11-02 20:19:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:19:24,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-11-02 20:19:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:24,770 INFO L225 Difference]: With dead ends: 2493 [2022-11-02 20:19:24,770 INFO L226 Difference]: Without dead ends: 1420 [2022-11-02 20:19:24,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:19:24,777 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1383 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:24,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 2143 Invalid, 2789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [405 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-02 20:19:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-11-02 20:19:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1052. [2022-11-02 20:19:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 832 states have (on average 1.6105769230769231) internal successors, (1340), 863 states have internal predecessors, (1340), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2022-11-02 20:19:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1709 transitions. [2022-11-02 20:19:25,168 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1709 transitions. Word has length 110 [2022-11-02 20:19:25,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:25,169 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1709 transitions. [2022-11-02 20:19:25,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:19:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1709 transitions. [2022-11-02 20:19:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 20:19:25,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:25,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:25,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:19:25,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:25,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:25,174 INFO L85 PathProgramCache]: Analyzing trace with hash 593658932, now seen corresponding path program 1 times [2022-11-02 20:19:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:25,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328061650] [2022-11-02 20:19:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:25,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:19:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:19:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:19:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:19:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:19:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:19:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:19:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:19:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:25,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328061650] [2022-11-02 20:19:25,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328061650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:25,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:25,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:19:25,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647536438] [2022-11-02 20:19:25,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:19:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:19:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:25,816 INFO L87 Difference]: Start difference. First operand 1052 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:19:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:33,823 INFO L93 Difference]: Finished difference Result 2428 states and 4033 transitions. [2022-11-02 20:19:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:19:33,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-11-02 20:19:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:33,833 INFO L225 Difference]: With dead ends: 2428 [2022-11-02 20:19:33,833 INFO L226 Difference]: Without dead ends: 1441 [2022-11-02 20:19:33,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:19:33,839 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 983 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:33,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 2197 Invalid, 2695 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-02 20:19:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2022-11-02 20:19:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1057. [2022-11-02 20:19:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 837 states have (on average 1.6069295101553167) internal successors, (1345), 868 states have internal predecessors, (1345), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2022-11-02 20:19:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1714 transitions. [2022-11-02 20:19:34,229 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1714 transitions. Word has length 111 [2022-11-02 20:19:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:34,230 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1714 transitions. [2022-11-02 20:19:34,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:19:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1714 transitions. [2022-11-02 20:19:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:19:34,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:34,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:34,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:19:34,234 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash -328963981, now seen corresponding path program 1 times [2022-11-02 20:19:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:34,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222304837] [2022-11-02 20:19:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:19:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:19:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:19:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:19:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:19:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:35,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:19:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:19:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:19:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:35,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222304837] [2022-11-02 20:19:35,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222304837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:35,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:35,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:19:35,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135470137] [2022-11-02 20:19:35,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:35,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:19:35,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:19:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:19:35,052 INFO L87 Difference]: Start difference. First operand 1057 states and 1714 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 20:19:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:52,223 INFO L93 Difference]: Finished difference Result 3660 states and 6229 transitions. [2022-11-02 20:19:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:19:52,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-11-02 20:19:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:52,242 INFO L225 Difference]: With dead ends: 3660 [2022-11-02 20:19:52,242 INFO L226 Difference]: Without dead ends: 2681 [2022-11-02 20:19:52,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:19:52,249 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 4312 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 6575 mSolverCounterSat, 1479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4382 SdHoareTripleChecker+Valid, 3929 SdHoareTripleChecker+Invalid, 8054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1479 IncrementalHoareTripleChecker+Valid, 6575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:52,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4382 Valid, 3929 Invalid, 8054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1479 Valid, 6575 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-11-02 20:19:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-11-02 20:19:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 1980. [2022-11-02 20:19:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1567 states have (on average 1.6253988513082323) internal successors, (2547), 1618 states have internal predecessors, (2547), 322 states have call successors, (322), 79 states have call predecessors, (322), 90 states have return successors, (375), 330 states have call predecessors, (375), 317 states have call successors, (375) [2022-11-02 20:19:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 3244 transitions. [2022-11-02 20:19:52,936 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 3244 transitions. Word has length 112 [2022-11-02 20:19:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:52,937 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 3244 transitions. [2022-11-02 20:19:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 20:19:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 3244 transitions. [2022-11-02 20:19:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-02 20:19:52,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:52,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:52,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:19:52,941 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1656796828, now seen corresponding path program 1 times [2022-11-02 20:19:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:52,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464190934] [2022-11-02 20:19:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:52,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:19:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:19:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:19:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:19:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:19:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:19:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:19:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:19:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464190934] [2022-11-02 20:19:53,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464190934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:19:53,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682007188] [2022-11-02 20:19:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:53,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:19:53,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:19:53,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:19:53,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:19:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:54,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:19:54,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:54,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:54,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682007188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:54,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:19:54,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2022-11-02 20:19:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828255041] [2022-11-02 20:19:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:54,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:54,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:19:54,118 INFO L87 Difference]: Start difference. First operand 1980 states and 3244 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:19:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:55,229 INFO L93 Difference]: Finished difference Result 4255 states and 7106 transitions. [2022-11-02 20:19:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-02 20:19:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:55,251 INFO L225 Difference]: With dead ends: 4255 [2022-11-02 20:19:55,252 INFO L226 Difference]: Without dead ends: 2683 [2022-11-02 20:19:55,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:19:55,260 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 876 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:55,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1600 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:19:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-11-02 20:19:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2668. [2022-11-02 20:19:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2110 states have (on average 1.6066350710900474) internal successors, (3390), 2172 states have internal predecessors, (3390), 428 states have call successors, (428), 114 states have call predecessors, (428), 129 states have return successors, (580), 441 states have call predecessors, (580), 423 states have call successors, (580) [2022-11-02 20:19:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4398 transitions. [2022-11-02 20:19:56,176 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4398 transitions. Word has length 117 [2022-11-02 20:19:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:56,177 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4398 transitions. [2022-11-02 20:19:56,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 20:19:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4398 transitions. [2022-11-02 20:19:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-02 20:19:56,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:56,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:56,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:19:56,381 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:19:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1328190415, now seen corresponding path program 1 times [2022-11-02 20:19:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:56,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451655534] [2022-11-02 20:19:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:19:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:19:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:19:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:19:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:19:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:19:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:19:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:19:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:19:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 20:19:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:19:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:19:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451655534] [2022-11-02 20:19:57,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451655534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:19:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498512711] [2022-11-02 20:19:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:57,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:19:57,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:19:57,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:19:57,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:19:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:58,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:19:58,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:19:58,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:58,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498512711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:58,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:19:58,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [19] total 20 [2022-11-02 20:19:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290209800] [2022-11-02 20:19:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:58,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:19:58,180 INFO L87 Difference]: Start difference. First operand 2668 states and 4398 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 20:20:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:00,072 INFO L93 Difference]: Finished difference Result 7837 states and 13075 transitions. [2022-11-02 20:20:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:00,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 119 [2022-11-02 20:20:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:00,116 INFO L225 Difference]: With dead ends: 7837 [2022-11-02 20:20:00,117 INFO L226 Difference]: Without dead ends: 5247 [2022-11-02 20:20:00,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:20:00,131 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 868 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:00,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1854 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2022-11-02 20:20:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 5245. [2022-11-02 20:20:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 4143 states have (on average 1.611875452570601) internal successors, (6678), 4264 states have internal predecessors, (6678), 846 states have call successors, (846), 223 states have call predecessors, (846), 255 states have return successors, (1211), 877 states have call predecessors, (1211), 841 states have call successors, (1211) [2022-11-02 20:20:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 8735 transitions. [2022-11-02 20:20:02,172 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 8735 transitions. Word has length 119 [2022-11-02 20:20:02,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:02,173 INFO L495 AbstractCegarLoop]: Abstraction has 5245 states and 8735 transitions. [2022-11-02 20:20:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 20:20:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 8735 transitions. [2022-11-02 20:20:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 20:20:02,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:02,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:02,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:20:02,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:02,380 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:02,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1775641027, now seen corresponding path program 1 times [2022-11-02 20:20:02,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:02,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448070774] [2022-11-02 20:20:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:02,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:20:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:20:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:20:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:20:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:20:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:20:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:20:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:20:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:20:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:20:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:20:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 20:20:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:20:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:03,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448070774] [2022-11-02 20:20:03,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448070774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:03,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146142956] [2022-11-02 20:20:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:03,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:03,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:03,625 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:03,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33fd6fb5-3652-470c-8cd0-3c1f29d6a4ac/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:20:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:04,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:04,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:20:04,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:04,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146142956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:04,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:20:04,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [19] total 20 [2022-11-02 20:20:04,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146995395] [2022-11-02 20:20:04,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:04,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:04,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:04,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:20:04,070 INFO L87 Difference]: Start difference. First operand 5245 states and 8735 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 20:20:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:08,220 INFO L93 Difference]: Finished difference Result 15570 states and 26228 transitions. [2022-11-02 20:20:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:08,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2022-11-02 20:20:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:08,291 INFO L225 Difference]: With dead ends: 15570 [2022-11-02 20:20:08,291 INFO L226 Difference]: Without dead ends: 10403 [2022-11-02 20:20:08,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:20:08,317 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 867 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:08,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1817 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states.